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A survey on the conceptual design of hypersonic aircraft powered by RBCC engine Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-21 Xue Rui; He Xin; Liu Feixing; Ma Xiaogang; Zheng Xing; Du Jianxun; Weng Chao
Rocket-based combined-cycle (RBCC) powered vehicles have been widely recognized as the most promising aircraft solution that could dramatically reduce the cost of space transportation. Researchers and scientists worldwide have conducted considerable overall design researches to cope with the challenges in RBCC development including mode transition, thermal protection and thrust enhancement. According
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Dynamic characteristics and research on the dual-drive feed mechanism Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-21 Hong Lu; Qi Liu; Xinbao Zhang; Jingui Yu; Haoyu Dou; Yongquan Zhang; Meng Duan
The dual-drive feed mechanism (DDFM) based on the drive at the center of gravity (DCG) principle has been widely adopted in computer numerical control (CNC) machines and industrial robots that require high precision and high stability. The friction force affected by feed rates and moving parts positions can change the contact stiffness of kinematic joints, which can further impact on dynamic characteristics
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Band gap optimization of one-dimension elastic waveguides using spatial Fourier plane wave expansion coefficients Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-21 Vinícius D Lima; Luis GG Villani; Juan F Camino; José RF Arruda
Periodic elastic waveguides, such as rods, beams, and shafts, exhibit frequency bands where wave reflections at impedance discontinuities cause strong wave attenuation by Bragg scattering. Such frequency bands are known as stop bands or band gaps. This work presents a shape optimization technique for one-dimensional periodic structures. The proposed approach, which aims to maximize the width of the
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Kinematics analysis and performance testing of 6-RR-RP-RR parallel platform with offset RR-hinges based on Denavit-Hartenberg parameter method Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-20 Yang Zhang; Ha-si-ao-qi-er Han; Zhen-bang Xu; Chun-yang Han; Yang Yu; A-long Mao; Qing-wen Wu
A six degrees-of-freedom parallel platform in a 6-RR-RP-RR configuration with high accuracy, high stiffness and a large working stroke is studied for application to the sub-mirror adjustment system of a large-aperture telescope. To meet the performance requirements, the parallel platform adopts a self-centering and well-designed offset universal hinge. The two hinge axes of the offset hinge do not
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Effects of segmented layer suction and micro-vortex generator on a high-load compressor cascade performance Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-20 Shan Ma; Wuli Chu; Xiaolin Sun; Zhengtao Guo; Song Yan
The axial location of full-span boundary layer suction is studied to explore the influences of suction slot on the cascade performance. At the design condition, the slot with 50% axial location shows a superior capability to reduce the total pressure loss. At the near stall condition, the more upstream of the suction slot is moved, the more total pressure loss is reduced, and the suction slot with
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BP neural Network-Kalman filter fusion method for unmanned aerial vehicle target tracking Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-20 Yongqi Liu; Liangcheng Nie; Rui Dong; Gang Chen
The poor real-time performance and target occlusion occurred easily when the UAV was tracking the target. In this paper, a target tracking method based on the Back Propagation neural network fusion Kalman filter algorithm was developed to solve the position prediction problem of the UAV target tracking in real time. Firstly, the target tracking algorithm was used to acquire the center position coordinates
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Wave propagation improvement in two-dimensional bond-based peridynamics model Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-20 Reza Alebrahim; Pawel Packo; Mirco Zaccariotto; Ugo Galvanetto
In this study, methods to mitigate anomalous wave propagation in 2-D Bond-Based Peridynamics (PD) are presented. Similarly to what happens in classical non-local models, an irregular wave transmission phenomenon occurs at high frequencies. This feature of the dynamic performance of PD, limits its potential applications. A minimization method based on the weighted residual point collocation is introduced
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Static behavior analysis of disc spring considering variable static friction coefficient Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-20 Xiaopeng Li; Renzhen Chen; Zemin Yang; Hexu Yang; Jinchi Xu
The object of this fundamental research will be to reveal the effects of variable coefficient of static friction on the static behavior of disc spring. On account of the complex relationship between friction and normal pressure, based on contact mechanics and fractal theory, a model for predicting variable coefficient of static friction of 3 D fractal surface is induced. Then the method proposed by
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Numerical study of graphene-platinum hybrid nanofluid in microchannel for electronics cooling Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-20 R Avinash Kumar; M Kavitha; P Manoj Kumar; S Arvindh Seshadri
The objective of this paper is to numerically study the heat transfer and hydrodynamic performance of a graphene-based hybrid nanofluid flowing through a microchannel for electronics cooling applications. Different concentrations of Graphene-Platinum/water hybrid nanofluid were employed as coolants. The thermophysical properties used in this study were considered to be temperature-dependent. The microchannel
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Two-dimensional high-precision non-contact automatic measurement method based on image corner coordinates Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-18 Maoyue Li; Yonghao Xu; Zengtao Chen; Kangsheng Ma; Lifei Liu
Aiming at some shortcomings of the existing non-contact two-dimensional high-precision measurement methods, this paper proposes a two-dimensional high-precision non-contact automatic measurement method based on the corner coordinates of the image. Firstly, this paper designs a set of simple image acquisition device and explains the advantages of the Canny operator used in the image contour detection
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Effects of pores on nonlinear vibration and post buckling behavior of functionally graded material pipes conveying fluid Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-18 Nan Li; Hongyan Zhang; Changqing Bai
Functionally graded material (FGM) has an important application prospect in aircraft engineering, especially in smart aircraft. The dynamic behavior of FGM has been widely investigated so far but more work is needed for the porous FGM pipes conveying fluid. In this paper, a sensible pore distribution function related with the volume fraction of metal and ceramic is proposed for the dynamic modeling
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Reinforcement learning control of a humanoid robotic hand actuated by shape memory alloy Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-18 Mingfang Liu; Zhirui Zhao; Wei Zhang; Lina Hao
Humanoid robotic hand actuated by shape memory alloy (SMA) represents a new emerging technology. SMA has a wide range of potential applications in many different fields, ranging from industrial assembly to biomedicine applications, due to the characteristic of high power-to-weight ratio, low driving voltages and noiselessness. However, nonlinearities of SMA and complex dynamic models of SMA-based robotic
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Trajectory planning and optimization of the bionic mantis robot front leg Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-18 Zhiyuan Chen; Qunzhang Tu; Xiangpo Zhang; Ming Pan; Chengming Jiang; Hao Huang
In this paper, a manipulator of the bionic mantis robot is designed inspired by the anatomical structure of the mantis front leg. A geometrical method is utilized to calculate the forward kinemics. Then, by analyzing the mantis motion video frame by frame, each of the front leg joints angles is measured in crawling and preying motion, which are used as interpolation conditions to solve the planned
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Reliability model for wind turbine blade composites under alternate action of normal and extreme wind loads Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-17 Jianxiong Gao; Yiping Yuan
Wind turbine blade is the key component to capture wind power, and it is mainly composed of glass fiber reinforced polymer (GFRP). Due to the randomness and volatility of wind speed in nature, wind turbine blade is usually subjected to the alternate action of normal and extreme wind loads during its long-term service. In this study, a reliability model that considering the stochastic wind loads and
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The analysis on the influence of mixed sliding-rolling motion mode to precision degradation of ball screw Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-17 Qiang Cheng; Baobao Qi; Hongyan Chu; Ziling Zhang; Zhifeng Liu; Jigui Zheng
The combination of sliding/rolling motion can influence the degree of precision degradation of ball screw. Precision degradation modeling and factors analysis can reveal the evolution law of ball screw precision. This paper presents a precision degradation model for factors analysis influencing precision due to mixed sliding-rolling motion. The precision loss model was verified through the comparison
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A multi-scale model of real contact area for linear guideway based on the fractal theory Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-17 Xinxin Li; Zhimin Li; Sun Jin; Jichang Zhang
High precision, efficiency and reliability are the unremitting pursuits of machinery manufacturing industry. As one of the pivotal function parts of high-end NC machine tool, precise linear guideway determines the machining precision and operation performance. Accurate evaluation and prediction of surface topography are the crucial effects on the matching performance of linear guideway. In this paper
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Experimental investigation into polishing of monocrystalline silicon wafer using double-disc chemical assisted magnetorheological finishing process Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-17 Mayank Srivastava; Pulak M Pandey
In the present work, a novel hybrid finishing process that combines the two preferred methods in industries, namely, chemical-mechanical polishing (CMP) and magneto-rheological finishing (MRF), has been used to polish monocrystalline silicon wafers. The experiments were carried out on an indigenously developed double-disc chemical assisted magnetorheological finishing (DDCAMRF) experimental setup.
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Reliability and economic analysis in sustainable machining of Monel 400 alloy Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-17 Ashwani Tayal; Nirmal Singh Kalsi; Munish Kumar Gupta; A Garcia-Collado; Murat Sarikaya
Engineering field nurtures a variety of superalloys and its wide applications due to the inherent properties of such material. The prime concern of working engineers is to explore reliability, quality, economy, and machinability analysis of these superalloys. In this work, sustainable machining of Monel 400superalloy using PVD multilayer coated carbide tool under dry turning was studied. Surface roughness
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Dynamics and modeling of nonlinear forced convective flow of Carreau-fluid (non-Newtonian fluid) with Marangoni convection Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-17 M Ijaz Khan; Yu-Ming Chu; Sumaira Qayyum; Shahid Farooq; A Aldabesh
This paper deals with Marangoni convective flow of Carreau fluid. Boundary condition for momentum equation is considered to be Marangoni type. Thermal energy produces when current passes through the electrical conductor and this process is called Joule heating. Viscous dissipation is also applied in thermal equation. Nonlinear mixed convection for temperature is considered. Governing equations of PDE's
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Models of a hybrid wheeled hopping self-balanced robot Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-14 Qimin Li; Haibing Zeng; Long Bai; Zijian An
Combining wheeled structure with hopping mechanism, this paper purposes a self-balanced hopping robot with hybrid motion pattern. The main actuator which is the cylindrical cam, optimized by particle swarm optimization (PSO), is equipped with the motor to control the hopping motion. Robotic system dynamics model is established and solved by Lagrangian method. After linearization, control characteristics
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Theory of critical distances: A discussion on concepts and applications Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-14 Cristiana Delprete; Luigi Gianpio Di Maggio; Raffaella Sesana
Theory of Critical Distances (TCD) collects several methods adopted in failure prediction of components provided with stress concentration features. The idea of evaluating stress effect in a zone rather than in a single point was proposed decades ago but, only thanks to relatively recent works, TCD concepts showed to be a successful extension of Linear Elastic Fracture Mechanics (LEFM), able to assess
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Influence of AlCoCrCuFe High Entropy Alloy particles on the microstructural, mechanical and tribological properties of copper surface composite made through friction stir processing Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-14 S Seenivasan; K Soorya Prakash; S Nandhakumar; PM Gopal
Primary focus of the current investigation is to analyze the effect of friction stir processing upon AlCoCrCuFe addition on Copper metal-metal surface composites. Copper surface composite along with the prepared novel AlCoCrCuFe high-entropy alloy (HEA) formulated through arc melting technique as reinforcement material is developed in the course following Friction Stir Processing (FSP) technique. Effect
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Investigation of residual stress in butt-welded plates considering phase transformation Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-12 Hongwei Zhang; Liangjin Gui; Qi Wang; Zijie Fan; Jian Li
This paper presents a new approach to predict the residual stresses caused by welding in a butt-welded specimen. Based on the developed three-dimensional finite element model, both the process of material filling and the effects of phase transformation are considered through the material properties which depend on both the temperature and temperature history. For simulating the change in volume caused
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A novel optimization-based method to find multiple solutions for path synthesis of planar four-bar and slider-crank mechanisms Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-12 Soheil Zarkandi
The classical method to find possible solutions for path synthesis problem of planar mechanisms is continuation method. However, this method has some disadvantages such as producing unwanted extraneous and degenerate solutions and also producing mechanisms having defects. Moreover, many of the solutions are cognate of each other which can be obtained geometrically. Thus, finding the most feasible solution
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Analytical higher-order-theories for noise reduction analysis of viscoelastic composite multilayered shells Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-11 A Alaimo; C Orlando; S Valvano
The noise transmission of aeronautical panels is an important phase of the design process of an airplane. In this work an analytical Navier-type solution, based on higher-order layer-wise shell models, is proposed for the analysis of the sound insulation of laminated panels. The considered multilayered structures are laminated with cross-ply composite layers embedded with interlaminar viscoelastic
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Dynamic behavior of chloride ion-electrically charged open carbon nanocone oscillators: A molecular dynamics study Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-10 S Ajori; F Sadeghi; R Ansari
This paper is intended to study the dynamic oscillatory behavior of chloride ion inside electrically charged open carbon nanocones (CNCs) using the molecular dynamics (MD) simulations. The small and wide ends of nanocone are assumed to be identically and uniformly charged with positive electric charges. In the simulation, the Tersoff-Brenner (TB) and the Lennard-Jones (LJ) potential functions are employed
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Static and dynamic path optimization of multiple mobile robot using hybridized fuzzy logic-whale optimization algorithm Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-07 Saroj Kumar; Dayal R Parhi; Abhishek K Kashyap; Manoj K Muni
Fuzzy logic is widely known as a value-based technique. Whale optimization algorithm (WOA), on the other hand, is a nature-inspired optimization technique. Hybridization of these two techniques is proposed for path planning and control, over multiple mobile robots in static and dynamic environments. The effectiveness of the resulting technique, known as ‘Fuzzy-WOA’, is tested through MATLAB simulation
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Heat and mass transfer on a stretching/shrinking and porous sheet of variable thickness with suction and injection Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-06 Aftab Alam; Dil Nawaz Khan Marwat
Heat and mass transfer in a viscous flow over a non-uniform porous plate of variable thickness is investigated in this paper. The variably heated plate is stretched/shrunk in a stagnant fluid with variable velocity and has the non-uniform species concentration. The governing partial differential equations are simplified and solved numerically. The transport of heat and mass in the flow regime is governed
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Coupling effects of manufacturing error and flexible ring gear rim on dynamic features of planetary gear Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2021-01-06 Zheng Cao; Meng Rao
Manufacturing errors widely exist in and deteriorate the dynamic property of planetary gear train (PGT). To solve this problem, the ring gear is often designed with a thin rim to compensate for the effects of manufacturing errors via the elastic deflections of the rim. Existing dynamic models of the PGT only consider the effects of either the elasticity of the rim of the ring gear or the manufacturing
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Dynamic modeling and simulation of impact in hydraulic cylinders Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-28 Osama Gad
In this paper, modeling impact dynamics of a piston and its cylinder body in a hydraulic cylinder is investigated. The studied system consists of two identical hydraulic cylinders controlled by a pressure sequence valve. The impact is assumed as a linear one dimensional and purely translational viscoelastic impact of rigid bodies. Four impact models, the Kelvin-Voigt, the Maxwell, the standard-solid
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A numerical investigation on the hybrid spur gears: Stress and dynamic analysis Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-28 Tufan G Yılmaz; Oğuz Doğan; Fatih Karpat
In this study, the effect of rim thickness of hybrid gears on the root stress, joint stress, tooth stiffness, natural frequency, and dynamic behavior are examined numerically. Hybrid gears consist of two materials, which are steel for the teeth-rim and hub regions of gear, carbon fiber reinforced plastic (CFRP) for the web region. Adhesive bonding is assumed for the joining of steel and composite materials
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A non-linear model for elastic hysteresis in the time domain: Computational procedure Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-28 MMS Dwaikat; C Spitas; V Spitas
Hysteretic damping of a material or structure loaded within its elastic region is the dissipation of mechanical energy at a rate independent of the frequency of vibration while at the same time directly proportional to the square of the displacement. Generally, reproducing this frequency-independent damping can be computationally complex and requires prior knowledge of the system’s natural frequencies
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Artificial diffusion in the simulation of micromixers: A review Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-28 Morteza Bayareh
False (artificial) diffusion provides an erroneous estimation of molecular diffusion during the simulation of liquid micromixing. The present review introduces discretization methods, numerical grid types, and numerical errors to address the effect of false diffusion on the prediction of mixing efficiency of microfluidic devices. False diffusivity is characterized by the grid Peclet number, grid type
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Energy absorbed ability and damage analysis for honeycomb sandwich material of bio-inspired micro aerial vehicle under low velocity impact Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-22 Jianxun Du; Peng Hao; Mabao Liu; Rui Xue; Lin’an Li
Because of the advantages of light weight, small size, and good maneuverability, the bio-inspired micro aerial vehicle has a wide range of application prospects and development potential in military and civil areas, and has become one of the research hotspots in the future aviation field. The beetle’s elytra possess high strength and provide the protection of the abdomen while being functional to guarantee
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Axial stiffness identification of a ball screw feed system using generalized frequency response functions Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-22 Hua Zhou; Xinhua Long; Guang Meng; Xingjian Dong
Contact of balls in screw nuts and bearings causes the nonlinearity of a ball screw feed system. The identification of nonlinear stiffness helps to understand and control the feed system. The axial vibration of the ball screw feed system can be descripted by a single-degree-of-freedom (SDOF) system with polynomial nonlinear terms. Since generalized frequency response functions (GFRFs) can be expressed
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Algorithm for computing the connectivity in planar kinematic chains and its application Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-22 Wenjian Yang; Huafeng Ding; Andres Kecskemethy
The number of synthesized kinematic chains usually is too large to evaluate individual characteristics of each chain. The concept of connectivity is useful to classify the kinematic chains. In this paper, an algorithm is developed to automatically compute the connectivity matrix in planar kinematic chains. The main work is to compute two intermediate parameters, namely the minimum mobility matrix and
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A novel unit mechanism for serial head-tail alternatively supported robot Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-20 Guanghong Tao; Zijing Liu; Changlong Ye
Multi-unit serial mobile robot designed for obstacle avoidance, inspection or rescue task, should ideally be able to switch the head and tail as supporting stand to move forward wriggly, be lightweight and low energy consumption, aiming at adapting to complex application environment. This paper proposes a novel robot pitching unit based on a parallelogram mechanism, and a robot with the proposed units
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Influence of fluid distributors on the performance of the industrial cold box with a plate-fin heat exchanger: A numerical study Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-20 A Zargoushi; F Talebi; SH Hosseini
The cold box, which comprises of several plate-fin heat exchangers (PFHE), is largely utilized in different industries. In this research, the computational fluid dynamics (CFD) technique has been used for investigating the impact of different fluid distributors on the rates of heat and mass transfer, in an industrial complex cold box equipped with plate-fins. While inlet and outlet fluid distributors
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Experimental investigation on the water droplet erosion characteristics of blade materials for steam turbine Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-20 Zheyuan Zhang; Bin Yang; Di Zhang; Yonghui Xie
In this paper, the water droplet erosion (WDE) characteristics of four blade materials under different high-speed liquid-solid impingement conditions are tested with the experimental steps and data processing methods in ASTM-G73. On the basis of cumulative erosion curves, the maximum erosion rate (ERmax) is obtained to analyze the WDE resistance of the testing materials quantitatively. The effects
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Effects of thin hard film deposition on fatigue strength of AA7075-T6 Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-18 Sergio Baragetti; Emanuele Vincenzo Arcieri
Thanks to their favorable strength-to-weight ratio, Aluminum-Zinc alloys are often used in high-performance industrial sectors. These alloys are characterized by poor erosion resistance, which could be increased by the deposition of thin films. For example, PVD (Physical Vapor Deposition) films can reduce wear and ensure appreciable performance in aggressive environments. This paper describes the effects
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Influence of dielectric conductivity on corner error in wire electrical discharge machining of Al 7075 alloy Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-16 Kingshuk Mandal; Mukandar Sekh; Dipankar Bose; Souren Mitra; Soumya Sarkar
Comprehensive research has been carried out to investigate the effect of electrical conductivity (ĸ) of dielectric along with other process parameters in wire electrical discharge machining (WEDM) of Al 7075 alloy. Taguchi based design using L9 orthogonal array has been used to analyse the effect of open circuit voltage (VOC), pulse on time (TON), pulse frequency (fP) and servo sensitivity (SC) on
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New concept of power transmission for gerotor hydraulic machines Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-16 Krzysztof Biernacki
The article presents a new design solution for hydraulic gerotor machines. The main focus has been placed on the strain analysis of the behavior of a cycloidal gear set made of plastic. The gears comprise the main work unit of hydraulic gerotor machines, which are powered by driving the gear set. In state of the art, the rotational motion of the gear set was effected by driving the inner gear. This
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Mathematical analysis of heat and mass transfer in a Maxwell fluid Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-16 Muhammad Naveed Khan; Sohail Nadeem; Shafiq Ahmad; Anber Saleem
The objective of current research is to analyze the MHD flow of a Maxwell fluid towards a stretching sheet with thermophoretic and stratification effects. The analysis of heat and mass transfer is presented in the presence of variable thermal conductivity and the Cattaneo-Christov theory. The Cattaneo-Christov theory is used instead of Fourier and Fick laws because Fourier and Fick's laws give parabolic
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A statistical analysis of temperature compensation for piezoelectric sensor bonded to AISI-1080 material Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-16 Mesut Tekkalmaz; Gökhan Haydarlar; M Alper Sofuoğlu
Electromechanical impedance (EMI) method has been widely used to evaluate structural health in recent years. In this method inexpensive, small, easy to apply, lightweight piezoelectric sensors are used to observe the changes in the structures. Different environmental conditions affect the piezoelectric sensor and the structure significantly. If the environmental impact is neglected, it causes misinterpretations
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Modeling of surface roughness in a novel magnetorheological gear profile finishing process Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-16 Ravi Datt Yadav; Anant Kumar Singh; Kunal Arora
Fine finishing of spur gears reduces the vibrations and noise and upsurges the service life of two mating gears. A new magnetorheological gear profile finishing (MRGPF) process is utilized for the fine finishing of spur gear teeth profile surfaces. In the present study, the development of a theoretical mathematical model for the prediction of change in surface roughness during the MRGPF process is
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A control volume finite element method for the thermoelastic problem in functional graded material with one relaxation time Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-16 Qi Liu; Qian Peng; Pingjian Ming
In this paper, a new direct vertex-centred finite volume method (CV-FEM) has been developed for the thermoelastic problem in functional graded material (FGM) based on Lord-Shulman theory. The heat conduction equation in Lord-Shulman theory is modified by considering the product term of spatial gradient of relaxation time and the heat flux rate, and it makes the present method more accurate to capture
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Robust H∞-based control of ARAS-diamond: A vitrectomy eye surgery robot Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-16 Abbas Bataleblu; Rohollah Khorrambakht; Hamid D Taghirad
In this paper, we investigate the challenges of controlling the ARAS-Diamond robot for robotic-assisted eye surgery. To eliminate the system’s inherent uncertainty effects on its performance, a cascade architecture control structure is proposed in this paper. For the inner loop of this structure, two different robust controls, namely, H∞ and μ-synthesis, with stability and performance analysis, are
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Image acquisition for trolling-mode atomic force microscopy based on dynamical equations of motion Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-14 Mohammadreza Sajjadi; Hossein Nejat Pishkenari; Gholamreza Vossoughi
Trolling mode atomic force microscopy (TR-AFM) can considerably reduce the liquid-resonator interaction forces, and hence, has overcome many imaging problems in liquid environments. This mode increases the quality factor (QF) significantly compared with the conventional AFM operation in liquid; therefore, the duration to reach the steady-state periodic motion of the oscillating probe is relatively
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Adaptive funnel fast nonsingular terminal sliding mode control for robotic manipulators with dynamic uncertainties Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-14 Huaizhen Wang; Lijin Fang; Menghui Hu; Tangzhong Song; Jiqian Xu
In this paper, a novel adaptive funnel fast nonsingular terminal sliding mode control for robotic manipulators with dynamic uncertainties is proposed. A modified funnel variable is utilized to transform the tracking error fall within funnel boundary, which improves the transient and steady-state tracking performance of robotic manipulators. Based on the transformed error, a novel funnel fast nonsingular
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Reconstructing method for cam profile of dobby modulator using the particle swarm optimization Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-14 Honghuan Yin; Zhitao Xiao; Hongbin Yu; Hongyu Shao
In this paper, the particle swarm optimization algorithm is used to address the non-central symmetry cam profile problem of rotary dobby modulator. Four types of classical curves are used as the motion characteristics of the heald frame, and then the non-central symmetry cam profile of each curve is obtained. The particle swarm optimization algorithm is used to optimize and reconstruct these cam profiles
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Input-constrained chaos synchronization of horizontal platform systems via a model predictive controller Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-10 Xinwei Wang; Jie Liu; Haijun Peng; Lingchong Gao; Johannes Fottner; Pengliang Liu
Horizontal platform systems are mechanical systems that can exhibit both periodic and chaotic behaviour. Various control techniques have been developed to solve their chaos synchronization. However, the avoidance of control saturation is rarely considered in existing control techniques. In this paper, a model predictive controller is developed to address the input-constrained chaos synchronization
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Tooth flank modification to reduce transmission error and mesh-in impact force in consideration of contact ratio for helical gears Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-09 Chao Jia; Zongde Fang; Ligang Yao; Jun Zhang
In this paper, a new tooth modification method considering the contact ratio of gears and a new method for calculating the mesh-in impact force of modified helical gears are proposed. The new method for calculating the mesh-in impact force is based on tooth contact analysis and loaded tooth contact analysis. The mesh-in impact position can be calculated accurately via the new method. First, the procedures
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Design and performance analysis of a thermoelectric air-conditioning system driven by solar photovoltaic panels Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-09 Moustafa M Aboelmaaref; Mohamed E Zayed; Ammar H Elsheikh; Ahmed A Askalany; Jun Zhao; Wenjia Li; K Harby; S Sadek; Mahmoud S Ahmed
Solar cooling technologies can play a vital role in renewable energy applications development. Thermoelectric systems have shown promising advantages over traditional refrigeration systems such as high thermal comfort, active adaptability, no moving parts, and refrigerants free. In this work, a novel thermoelectric air-conditioning system (TEACS) driven by photovoltaics (PV) is experimentally and theoretically
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Singularity analysis and avoidance of a planar parallel mechanism with kinematic redundancy under a fixed orientation Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-09 Haibo Qu; Lanqing Hu; Sheng Guo
In this paper, the singularity of a planar mechanism with kinematic redundancy is studied. First, the architecture of the mechanism and the concept schematic diagram for singularity avoidance are stated. Next, inverse kinematics model of the planar parallel mechanism with kinematic redundancy is established. For determining the unique inverse solution of the mechanism under certain initial installation
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Operational modal analysis of a nonlinear oscillation system under a harmonic excitation Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-09 Xuchu Jiang; Feng Jiang; Biao Zhang
Operational modal analysis (OMA) is a procedure that allows the modal parameters of a structure to be extracted from the measured response to an unknown excitation generated during operation. Nonlinearity is inevitably and frequently encountered in OMA. The problem: The traditional OMA method based on linear modal theory cannot be applied to a nonlinear oscillation system. The solution: This paper
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Dynamic surface control based on high-gain disturbance observer for electro-hydraulic systems with position/velocity constraints Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-09 Yunfei Wang; Jiyun Zhao; Haigang Ding; He Zhang
The electro-hydraulic system is widely used in industrial production due to its high power-to-weight ratio, but the heavy-duty characteristics make the electro-hydraulic system subject to large disturbance force even if the actuator moves slightly, especially in mobile machines and multi-actuators system. Therefore, a position and velocity constraints method based on barrier Lyapunov function is proposed
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Accuracy Analysis of Machining Trajectory Contemplating Workpiece Dislocation on a Six Degree of Freedom Machining Bed Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-08 Muhammad Faizan Shah; Zareena Kausar; Muhammad Umer Farooq; Liaquat Ali Khan; Syed Saad Farooq
Machining is material removal from a workpiece. Current spindle technologies allow the material to be removed very quickly but unfortunately this compromises the accuracy of the desired machined trajectory on the workpiece. Proposed solution to the problem is restricting motion of the tool and giving rotation to the workpiece. This paper presents analysis of the accuracy of trajectory of material removal
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Nonlinear dynamic characteristics of marine rotor-bearing system under coupled heave and pitch ship motions Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-08 Wenzhuo Zhang; Ming Li
The coupled heave and pitch motions of a ship sailing in head waves affect the stability of the marine rotor-bearing system. Based on the theory of analytical mechanics, this study establishes a dynamic model of the rotor-bearing system subjected to the coupled motions of heave and pitch, considering nonlinear oil film moments produced by the tilting of the rotor in the bearings. The nonlinear dynamic
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Aeroelastic vibration analysis of wind turbine blade with Gurney flap Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-08 Lin Chang; Yingjie Yu; Tingrui Liu
In this paper, based on the parametric design of 3 D blades including typical cross-section and natural frequency calculation of the equivalent model, an integral method for aerodynamic performance and aeroelastic vibration analysis of blade with Gurney flap is proposed. Parametric design and unstructured grid are used to pre-process the blades with/without the Gurney flap. The discrete aerodynamic
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Surface integrity in laser-assisted machining of Ti6Al4V Proc. Inst. Mech. Eng. C J. Mec. Eng. Sci. (IF 1.386) Pub Date : 2020-12-08 O Kalantari; MM Fallah; F Jafarian; SR Hamzeloo
In laser-assisted machining (LAM), the laser source is focused on the workpiece as a thermal source and locally increases the workpiece temperature and makes the material soft ahead of the cutting tool so using this method, the machining forces are reduced, which causes improving the surface quality and cutting tool life. Machinability of advanced hard materials is significantly low and conventional