-
Vibration control enhancement in a full vehicle dynamic model by optimization of the controller’s gain parameters Eng. Comput. (IF 1.6) Pub Date : 2024-02-26 Leonardo Valero Pereira, Walter Jesus Paucar Casas, Herbert Martins Gomes, Luis Roberto Centeno Drehmer, Emanuel Moutinho Cesconeto
Purpose In this paper, improvements in reducing transmitted accelerations in a full vehicle are obtained by optimizing the gain parameters of an active control in a roughness road profile. Design/methodology/approach For a classically designed linear quadratic regulator (LQR) control, the vibration attenuation performance will depend on weighting matrices Q and R. A methodology is proposed in this
-
Variational sparse diffusion and its application in mesh processing Eng. Comput. (IF 1.6) Pub Date : 2024-03-04 Yongjiang Xue, Wei Wang, Qingzeng Song
Purpose The primary objective of this study is to tackle the enduring challenge of preserving feature integrity during the manipulation of geometric data in computer graphics. Our work aims to introduce and validate a variational sparse diffusion model that enhances the capability to maintain the definition of sharp features within meshes throughout complex processing tasks such as segmentation and
-
A complex model decomposition algorithm based on 3D frame fields and features Eng. Comput. (IF 1.6) Pub Date : 2024-02-09 Chengpeng Zhang, Zhihua Yu, Jimin Shi, Yu Li, Wenqiang Xu, Zheyi Guo, Hongshi Zhang, Zhongyuan Zhu, Sheng Qiang
Purpose Hexahedral meshing is one of the most important steps in performing an accurate simulation using the finite element analysis (FEA). However, the current hexahedral meshing method in the industry is a nonautomatic and inefficient method, i.e. manually decomposing the model into suitable blocks and obtaining the hexahedral mesh from these blocks by mapping or sweeping algorithms. The purpose
-
Numerical calculation of shock wave overpressure produced by multiple cloud detonation Eng. Comput. (IF 1.6) Pub Date : 2024-01-25 Zeye Fu, Jiahao Zou, Luxin Han, Qi Zhang
Purpose A model for calculating the global overpressure time history of a single cloud detonation from overpressure time history of discrete positions in the range of single cloud detonation is to be proposed and verified. The overpressure distribution produced by multiple cloud detonation and the influence of cloud spacing and fuel mass of every cloud on the overpressure distribution are to be studied
-
A study of rotary cutting machine (RCM) performance on Korean granite Eng. Comput. (IF 1.6) Pub Date : 2024-01-23 Young Jin Shin, Ebrahim Farrokh, Jaehoon Jung, Jaewon Lee, Hanbyul Kang
Purpose Despite the many advantages this type of equipment offers, there are still some major drawbacks. Linear cutting machine (LCM) cannot accurately simulate the true rock-cutting process as 1. it does not account for the circular path along which tunnel boring machine (TBM) disk cutters cut the tunnel face, 2. it does not accurately model the position of a disk cutter on the cutterhead, 3. it cannot
-
Observer-based preview control for T-S fuzzy systems Eng. Comput. (IF 1.6) Pub Date : 2024-01-23 Li Li, Hui Ye, Xiaohua Meng
Purpose Considering the unmeasurable states of the systems and the previewed reference signal, a novel fuzzy observer-based preview controller, which is a mixed controller of the fuzzy observer-based controller, fuzzy integrator and preview controller, is considered to address the tracking control problem. Design/methodology/approach The authors employ an augmentation technique to construct an augmented
-
Assessment of shear band evolution using discrete element modelling Eng. Comput. (IF 1.6) Pub Date : 2024-01-22 Yang Yang, Yinghui Tian, Runyu Yang, Chunhui Zhang, Le Wang
Purpose The objective of this paper is to quantitatively assess shear band evolution by using two-dimensional discrete element method (DEM). Design/methodology/approach The DEM model was first calibrated by retrospectively modelling existing triaxial tests. A series of DEM analyses was then conducted with the focus on the particle rotation during loading. An approach based on particle rotation was
-
Dynamic analysis of Pine Flat dam–water–foundation rock system utilizing the H-W truncation boundary condition Eng. Comput. (IF 1.6) Pub Date : 2024-01-11 Vahid Lotfi, Hesamedin Abdorazaghi
Purpose The response of the Pine Flat dam–water–foundation rock system is studied by a new described approach (i.e. FE-(FE-TE)-FE). The initial part of study is focused on the time harmonic analysis. In this part, it is possible to compare the transfer functions against corresponding responses obtained by the FE-(FE-HE)-FE approach (referred to as exact method which employs a rigorous fluid hyper-element)
-
Parallel and automatic mesh sizing field generation for complicated CAD models Eng. Comput. (IF 1.6) Pub Date : 2024-01-09 Juelin Leng, Quan Xu, Tiantian Liu, Yang Yang, Peng Zheng
Purpose The purpose of this paper is to present an automatic approach for mesh sizing field generation of complicated computer-aided design (CAD) models. Design/methodology/approach In this paper, the authors present an automatic approach for mesh sizing field generation. First, a source point extraction algorithm is applied to capture curvature and proximity features of CAD models. Second, according
-
Multi-view fuzzy C-means clustering with kernel metric and local information for color image segmentation Eng. Comput. (IF 1.6) Pub Date : 2024-01-02 Xiumei Cai, Xi Yang, Chengmao Wu
Purpose Multi-view fuzzy clustering algorithms are not widely used in image segmentation, and many of these algorithms are lacking in robustness. The purpose of this paper is to investigate a new algorithm that can segment the image better and retain as much detailed information about the image as possible when segmenting noisy images. Design/methodology/approach The authors present a novel multi-view
-
Hydraulic loss characteristics of closed-loop piping system during start-up process of mixed-flow pump Eng. Comput. (IF 1.6) Pub Date : 2023-11-28 Wei Li, Yuxin Huang, Leilei Ji, Lingling Ma, Ramesh Agarwal
Purpose The purpose of this study is to explore the transient characteristics of mixed-flow pumps during startup process. Design/methodology/approach This study uses a full-flow field transient calculation method of mixed-flow pump based on a closed-loop model. Findings The findings show the hydraulic losses and internal flow characteristics of the piping system during the start-up process. Research
-
Prediction of soil degree of compaction based on machine learning: a case study of two fine-grained soils Eng. Comput. (IF 1.6) Pub Date : 2023-11-24 Yuling Ran, Wei Bai, Lingwei Kong, Henghui Fan, Xiujuan Yang, Xuemei Li
Purpose The purpose of this paper is to develop an appropriate machine learning model for predicting soil compaction degree while also examining the contribution rates of three influential factors: moisture content, electrical conductivity and temperature, towards the prediction of soil compaction degree. Design/methodology/approach Taking fine-grained soil A and B as the research object, this paper
-
Dynamic analysis of a highway bridge beam under the passage of compound heavy trucks with multiple trailers Eng. Comput. (IF 1.6) Pub Date : 2023-11-23 Diego Gabriel Metz, Roberto Dalledone Machado, Marcos Arndt, Carlos Eduardo Rossigali
Purpose Realistic composite vehicles with 2, 3, 5 and 9 axles, consisting of a truck with one or two trailers, are addressed in this paper by computational models for vehicle–bridge interaction analysis. Design/methodology/approach The vehicle–bridge interaction (VBI) models are formed by sets of 2-D rigid blocks interconnected by mass, damping and stiffness elements to simulate their suspension system
-
A resource-efficient form-finding approach to tensegrity structures Eng. Comput. (IF 1.6) Pub Date : 2023-11-21 Heping Liu, Sanaullah, Angelo Vumiliya, Ani Luo
Purpose The aim of this article is to obtain a stable tensegrity structure by using the minimum knowledge of the structure. Design/methodology/approach Three methods have been formulated based on the eigen value decomposition (EVD) and singular value decomposition theorems. These two theorems are being implemented on the matrices, which are computed from the minimal data of the structure. The required
-
A DFT-based finite element model to study the elastic, buckling and vibrational characteristics of monolayer bismuthene Eng. Comput. (IF 1.6) Pub Date : 2023-11-21 Peyman Aghdasi, Shayesteh Yousefi, Reza Ansari
Purpose In this paper, based on the density functional theory (DFT) and finite element method (FEM), the elastic, buckling and vibrational behaviors of the monolayer bismuthene are studied. Design/methodology/approach The computed elastic properties based on DFT are used to develop a finite element (FE) model for the monolayer bismuthene in which the Bi-Bi bonds are simulated by beam elements. Furthermore
-
Study on mechanical properties of corrugated steel support tunnel under fault sliding Eng. Comput. (IF 1.6) Pub Date : 2023-11-17 Hong-tao Zhang, Shan Liu, Lan-xi Sun, Yu-fei Zhao
Purpose There have been limited investigations on the mechanical characteristics of tunnels supported by corrugated plate structures during fault dislocation. The authors obtained circumferential and axial deformations of the spiral corrugated pipe at various fault displacements. Lastly, the authors examined the impact of reinforced spiral stiffness and soil constraints on the support performance of
-
Voronoi discretization to improve the meshless local Petrov–Galerkin method in 3D-computational fracture mechanics Eng. Comput. (IF 1.6) Pub Date : 2023-11-17 Behrooz Ariannezhad, Shahram Shahrooi, Mohammad Shishesaz
Purpose 1) The OE-MLPG penalty meshfree method is developed to solve cracked structure.(2) Smartening the numerical meshfree method by combining the particle swarm optimization (PSO) optimization algorithms and Voronoi computational geometric algorithm. (3). Selection of base functions, finding optimal penalty factor and distribution of appropriate nodal points to the accuracy of calculation in the
-
PEM-based random vibration analysis under service-braking conditions on an irregular track Eng. Comput. (IF 1.6) Pub Date : 2023-11-15 Xiaoxue Liu, Yuchen Liu, Youwei Zhang, Hanfei Guo
Purpose According to relevant research, non-uniform speed has a significant impact on the vehicle-track systems. Up to now, research work on it is still very limited. In this paper, the PEM is adopted to further transform it into a deterministic process to solve the vehicle’s problem of running at a non-uniform speed. Design/methodology/approach The multi-body vehicle model has 10 degrees of freedom
-
A reduced-order Jacobi spectral collocation method for solving the space-fractional FitzHugh–Nagumo models with application in myocardium Eng. Comput. (IF 1.6) Pub Date : 2023-11-14 Mostafa Abbaszadeh, AliReza Bagheri Salec, Shurooq Kamel Abd Al-Khafaji
Purpose The space fractional PDEs (SFPDEs) play an important role in the fractional calculus field. Proposing a high-order, stable and flexible numerical procedure for solving SFPDEs is the main aim of most researchers. This paper devotes to developing a novel spectral algorithm to solve the FitzHugh–Nagumo models with space fractional derivatives. Design/methodology/approach The fractional derivative
-
Multivariate nonlinear regression analysis of hydraulic fracturing parameters based on hybrid FEM–DEM Eng. Comput. (IF 1.6) Pub Date : 2023-11-13 Yang Li, Tianxiang Lan
Purpose This paper aims to employ a multivariate nonlinear regression analysis to establish a predictive model for the final fracture area, while accounting for the impact of individual parameters. Design/methodology/approach This analysis is based on the numerical simulation data obtained, using the hybrid finite element–discrete element (FE–DE) method. The forecasting model was compared with the
-
A combined BEM and Laplace transform for unsteady modified-Helmholtz equation of time–space variable coefficients for anisotropic media Eng. Comput. (IF 1.6) Pub Date : 2023-11-13 Mohammad Ivan Azis
Purpose Two-dimensional (2D) problems are governed by unsteady anisotropic modified-Helmholtz equation of time–space dependent coefficients are considered. The problems are transformed into a boundary-only integral equation which can be solved numerically using a standard boundary element method (BEM). Some examples are solved to show the validity of the analysis and examine the accuracy of the numerical
-
Biorthogonal flatlet multiwavelet collocation method for solving the singular nonlinear system with initial and boundary conditions Eng. Comput. (IF 1.6) Pub Date : 2023-11-13 Maryam Mohseni, Davood Rostamy
Purpose The numerical methods are of great importance for approximating the solutions of a system of nonlinear singular ordinary differential equations. In this paper, the authors present the biorthogonal flatlet multiwavelet collocation method (BFMCM) as a numerical scheme for a class of system of Lane–Emden equations with initial or boundary or four-point boundary conditions. Design/methodology/approach
-
An approach for the estimation of lateral track irregularity using axle-box acceleration Eng. Comput. (IF 1.6) Pub Date : 2023-11-13 Xiaodi Xu, Shanchao Sun, Yang Fei, Liubin Niu, Xinyu Tian, Zaitian Ke, Peng Dai, Zhiming Liang
Purpose This article aims to predict the rapid track geometry change in the short term with a higher detection frequency, and realize the monitoring and maintenance of the railway state. Design/methodology/approach Firstly, the ABA data needs to be filtered to remove the DC component to reduce the drift due to integration. Secondly, the quadratic integration in frequency domain for concern components
-
Iterated-local-search-based chaotic differential evolution algorithm for hybrid-load part feeding scheduling optimization in mixed-model assembly lines Eng. Comput. (IF 1.6) Pub Date : 2023-11-07 Zhu Wang, Hongtao Hu, Tianyu Liu
Purpose Driven by sustainable production, mobile robots are introduced as a new clean-energy material handling tool for mixed-model assembly lines (MMALs), which reduces energy consumption and lineside inventory of workstations (LSI). Nevertheless, the previous part feeding scheduling method was designed for conventional material handling tools without considering the flexible spatial layout of the
-
Seismic reliability analysis of slope in spatially variable soils using multiple response surfaces Eng. Comput. (IF 1.6) Pub Date : 2023-11-07 Chunli Li, Liang Li, Yungming Cheng, Liang Xu, Guangming Yu
Purpose This paper aims to develop an efficient algorithm combining straightforward response surface functions with Monte Carlo simulation to conduct seismic reliability analysis in a systematical way. Design/methodology/approach The representative slip surfaces are identified and based on to calibrate multiple response surface functions with acceptable accuracy. The calibrated response surfaces are
-
Robust adaptive analysis of dynamic responses of wave energy converters Eng. Comput. (IF 1.6) Pub Date : 2023-11-07 Yingguang Wang
Purpose The purpose of this paper is to exploit a new and robust method to forecast the long-term extreme dynamic responses for wave energy converters (WECs). Design/methodology/approach A new adaptive binned kernel density estimation (KDE) methodology is first proposed in this paper. Findings By examining the calculation results the authors has found that in the tail region the proposed new adaptive
-
Multi-objective design optimization of reentrant auxetic model using Lichtenberg algorithm based on metamodel Eng. Comput. (IF 1.6) Pub Date : 2023-11-07 Matheus Francisco, João Pereira, Lucas Oliveira, Sebastião Simões Cunha, G.F. Gomes
Purpose The present paper aims at the multi-objective optimization of a reentrant hexagonal cell auxetic structure. In addition, a parametric analysis will be carried out to verify how each of the design factors impact each of the responses. Design/methodology/approach The multi-objective optimization of five different responses of an auxetic model was considered: mass, critical buckling load under
-
Efficient iterative schemes based on Newton's method and fixed-point iteration for solving nonlinear matrix equation Xp = Q±A(X−1+B)−1AT Eng. Comput. (IF 1.6) Pub Date : 2023-11-07 Raziyeh Erfanifar, Masoud Hajarian
Purpose In this paper, the authors study the nonlinear matrix equation Xp=Q±A(X-1+B)-1AT, that occurs in many applications such as in filtering, network systems, optimal control and control theory. Design/methodology/approach The authors present some theoretical results for the existence of the solution of this nonlinear matrix equation. Then the authors propose two iterative schemes without inversion
-
Numerical simulation of the extrusion process of viscoplastic materials using a radial point interpolation method Eng. Comput. (IF 1.6) Pub Date : 2023-11-06 Daniel E.S. Rodrigues, Jorge Belinha, Renato Natal Jorge
Purpose Fused Filament Fabrication (FFF) is an extrusion-based manufacturing process using fused thermoplastics. Despite its low cost, the FFF is not extensively used in high-value industrial sectors mainly due to parts' anisotropy (related to the deposition strategy) and residual stresses (caused by successive heating cycles). Thus, this study aims to investigate the process improvement and the optimization
-
Comparisons between direct interpolation and reciprocity techniques of the boundary element method for solving two-dimensional Helmholtz problems Eng. Comput. (IF 1.6) Pub Date : 2023-11-06 Thiago Galdino Balista, Carlos Friedrich Loeffler, Luciano Lara, Webe João Mansur
Purpose This work compares the performance of the three boundary element techniques for solving Helmholtz problems: dual reciprocity, multiple reciprocity and direct interpolation. All techniques transform domain integrals into boundary integrals, despite using different principles to reach this purpose. Design/methodology/approach Comparisons here performed include the solution of eigenvalue and response
-
Numerical simulation of mechanical characteristics and tension-torsion coupling effect of tension-type anchor cable Eng. Comput. (IF 1.6) Pub Date : 2023-11-06 Xin Meng, Qingyang Ren, Songqiang Xiao, Bin Chen, Hongfei Li
Purpose The purpose of this paper is to simulate the tension process of tension-type anchor cable and to explore the mechanical characteristics and tension-torsion coupling effect of anchor cable subjected to tension. Design/methodology/approach ABAQUS numerical software is applied to construct the numerical models of tension-type anchor cables with different diameters. Through explicit contact, the
-
Effects of pre-shearing and pre-consolidation histories on liquefaction behaviour of saturated loose sand: DEM investigation Eng. Comput. (IF 1.6) Pub Date : 2023-11-02 Minyi Zhu, Guobin Gong, Xuehuiru Ding, Stephen Wilkinson
Purpose The study aims to investigate the effects of pre-loading histories (pre-shearing and pre-consolidation) on the liquefaction behaviour of saturated loose sand via discrete element method (DEM) simulations. Design/methodology/approach The pre-shearing history is mimicked under drained conditions (triaxial compression) with different pre-shearing strain levels ranging from 0% to 2%. The pre-consolidation
-
Modeling of Ca/P and deposit size responses of electrodeposited calcium-phosphate coating using full factorial design Eng. Comput. (IF 1.6) Pub Date : 2023-11-02 Mohabbat Amirnejad, Mohammad Rajabi, Roohollah Jamaati
Purpose This study aims to investigate the effect of electrodeposition parameters (i.e. time and voltage) on the properties of hydroxyapatite (HA) coating fabricated on Ti6Al4V surface. Design/methodology/approach A full factorial design along with response surface methodology was utilized to evaluate the main effect of independent variables and their relative interactions on response variables. The
-
Relaxed gradient-based iterative solutions to coupled Sylvester-conjugate transpose matrix equations of two unknowns Eng. Comput. (IF 1.6) Pub Date : 2023-11-01 Ahmed M. E. Bayoumi
Purpose This article proposes a relaxed gradient iterative (RGI) algorithm to solve coupled Sylvester-conjugate transpose matrix equations (CSCTME) with two unknowns. Design/methodology/approach This article proposes a RGI algorithm to solve CSCTME with two unknowns. Findings The introduced (RGI) algorithm is more efficient than the gradient iterative (GI) algorithm presented in Bayoumi (2014), where
-
Longitudinal and lateral stability control for autonomous vehicles in curved road scenarios with road undulation Eng. Comput. (IF 1.6) Pub Date : 2023-10-31 Zhizhong Guo, Fei Liu, Yuze Shang, Zhe Li, Ping Qin
Purpose This research aims to present a novel cooperative control architecture designed specifically for roads with variations in height and curvature. The primary objective is to enhance the longitudinal and lateral tracking accuracy of the vehicle. Design/methodology/approach In addressing the challenges posed by time-varying road information and vehicle dynamics parameters, a combination of model
-
Explainable boosted combining global and local feature multivariate regression model for deformation prediction during braced deep excavations Eng. Comput. (IF 1.6) Pub Date : 2023-10-31 Wenchao Zhang, Peixin Shi, Zhansheng Wang, Huajing Zhao, Xiaoqi Zhou, Pengjiao Jia
Purpose An accurate prediction of the deformation of retaining structures is critical for ensuring the stability and safety of braced deep excavations, while the high nonlinear and complex nature of the deformation makes the prediction challenging. This paper proposes an explainable boosted combining global and local feature multivariate regression (EB-GLFMR) model with high accuracy, robustness and
-
Event-triggered adaptive prescribed performance control of flexible-joint manipulators with output constraint Eng. Comput. (IF 1.6) Pub Date : 2023-10-30 Yaoyao Tuo, Junyang Li, Yankui Song
Purpose This paper aims to design an event-triggered adaptive prescribed performance controller for flexible manipulators, with the primary objectives of achieving output performance constraints and addressing communication resource limitations. Design/methodology/approach The authors propose a novel prescribed performance barrier Lyapunov function (PP-BLF) that considers both output and tracking performance
-
An improved high-dimensional Kriging modeling method utilizing maximal information coefficient Eng. Comput. (IF 1.6) Pub Date : 2023-10-30 Qiangqiang Zhai, Zhao Liu, Zhouzhou Song, Ping Zhu
Purpose Kriging surrogate model has demonstrated a powerful ability to be applied to a variety of engineering challenges by emulating time-consuming simulations. However, when it comes to problems with high-dimensional input variables, it may be difficult to obtain a model with high accuracy and efficiency due to the curse of dimensionality. To meet this challenge, an improved high-dimensional Kriging
-
The airfoil design and parameter optimization of the deformable micro air vehicle Eng. Comput. (IF 1.6) Pub Date : 2023-10-23 Shengxian Huang, Huihe Qiu, Ying Wang
Purpose Since most of the existing literature do not disclose the node coordinate data of its fixed-wing aircraft airfoil, in order to develop and obtain a practical and suitable deformation airfoil for fixed-wing micro air vehicle (MAV), this paper proposes an improved airfoil design method of fixed-wing MAV based on the profile data of S5010 airfoil. Design/methodology/approach Combined with the
-
Magnetogasdynamic shock waves in a nonideal self-gravitating gas using Lie group theoretic method Eng. Comput. (IF 1.6) Pub Date : 2023-10-23 Gorakh Nath, Abhay Maurya
Purpose The purpose of the present article is to obtain the similarity solution for the shock wave generated by a piston propagating in a self-gravitating nonideal gas under the impact of azimuthal magnetic field for adiabatic and isothermal flows. Design/methodology/approach The Lie group theoretic method given by Sophus Lie is used to obtain the similarity solution in the present article. Findings
-
Numerical investigation of particle effect on wear characteristic of centrifugal slurry pump based on CFD-DEM coupling Eng. Comput. (IF 1.6) Pub Date : 2023-10-23 Xiuwei Shi, Wujian Ding, Chunjie Xu, Fangwei Xie, Zuzhi Tian
Purpose In the process of conveying the solid–liquid two-phase medium of the centrifugal slurry pump, the wear of the flow-passing parts is an important problem affecting its life and safe operation. Therefore, a numerical investigation on the wear characteristics of the centrifugal slurry pump under different particle conditions was conducted. Design/methodology/approach A solid-liquid two-phase model
-
Three-dimensional slope stability and anti-slide pile treatment of Zhangjiayao landslide under rainfall Eng. Comput. (IF 1.6) Pub Date : 2023-10-23 Chen-Xi Han, Tian-Shun Hou, Ye Chen
Purpose To solve the instability problem of Zhangjiayao landslide caused by rainfall, the internal mechanism of slope instability and the supporting effect of anti-slide piles are studied. The research results can provide theoretical basis for the prevention and control of loess landslides. Design/methodology/approach A three-dimensional finite element model of Zhangjiayao landslide is established
-
Method and finite element verification of indentation calculation for a novel air-spring mattress: for estimating spinal alignment in sleep postures Eng. Comput. (IF 1.6) Pub Date : 2023-10-20 Yao Chao, Tao Liu, Liming Shen
Purpose This study aimed to develop a method to calculate the mattress indentation for further estimating spinal alignment. Design/methodology/approach A universal indentation calculation model is derived based on the system theory, and the deformation characteristics of each component are analyzed by the finite element (FE) model of a partial air-spring mattress under the initial air pressure of 0
-
Modeling of porous-hardened concrete by rheological-dynamical analogy Eng. Comput. (IF 1.6) Pub Date : 2023-10-20 Dragan D. Milašinović
Purpose The purpose of this paper is to describe various aspects of the visco-elastoplastic (VEP) behavior of porous-hardened concrete samples in relation to standard tests. Design/methodology/approach The problem is formulated on the basis of the rheological-dynamic analogy (RDA). In this study, changes in creep coefficient, Poisson's ratio, damage variables, modulus of elasticity, strength and angle
-
Meshfree algorithms for analysis and computational modeling of multidimensional hyperbolic wave models Eng. Comput. (IF 1.6) Pub Date : 2023-10-20 Sapna Pandit, Pooja Verma, Manoj Kumar, Poonam
Purpose This article offered two meshfree algorithms, namely the local radial basis functions-finite difference (LRBF-FD) approximation and local radial basis functions-differential quadrature method (LRBF-DQM) to simulate the multidimensional hyperbolic wave models and work is an extension of Jiwari (2015). Design/methodology/approach In the evolvement of the first algorithm, the time derivative is
-
An artificial bee colony based-hyper heuristic algorithm with local search for the assembly line balancing problems Eng. Comput. (IF 1.6) Pub Date : 2023-10-17 Derya Deliktaş, Dogan Aydin
Purpose Assembly lines are widely employed in manufacturing processes to produce final products in a flow efficiently. The simple assembly line balancing problem is a basic version of the general problem and has still attracted the attention of researchers. The type-I simple assembly line balancing problems (SALBP-I) aim to minimise the number of workstations on an assembly line by keeping the cycle
-
Unstable propagation of hydraulic fractures under varying well spacing and initiation sequence of multiple horizontal wells considering shear stress shadows Eng. Comput. (IF 1.6) Pub Date : 2023-10-17 Yongliang Wang, Nana Liu
Purpose Multi-well hydrofracturing is an important technology to create new fractures and expand existing fractures to increase reservoir permeability. The propagation morphology of the fracture network is affected by the disturbance between the fractures initiation sequences and spacings between adjacent wells. However, it remains unclear how well spacing and initiation sequences lead to fracture
-
Stiffness analysis of nutation face gear considering roughness Eng. Comput. (IF 1.6) Pub Date : 2023-10-16 Lili Zhu, Jinxu Bai, Xu Liang, Maojin Jia
Purpose The purpose of this paper is to calculate the meshing stiffness of nutation face gear considering the roughness, establish the calculation method of time-varying meshing stiffness of rough tooth surface and analyze the influence of roughness, load and other factors on the meshing stiffness of tooth surface. Design/methodology/approach The Weierstrass–Mandelbrot (W-M) function in the Majumdar–Bhushan
-
Automatic simulated dental implants method with implant parameter estimation based on CBCT images Eng. Comput. (IF 1.6) Pub Date : 2023-10-13 Kai Wang, Jiaying Liu, Shuai Yang, Jing Guo, Yongzhen Ke
Purpose This paper aims to automatically obtain the implant parameter from the CBCT images to improve the outcome of implant planning. Design/methodology/approach This paper proposes automatic simulated dental implant positioning on CBCT images, which can significantly improve the efficiency of implant planning. The authors introduce the fusion point calculation method for the missing tooth's long
-
Coalescence of thermal fractures initiated at parallel cooling surfaces Eng. Comput. (IF 1.6) Pub Date : 2023-10-12 Bin Chen, Quanlin Zhou, Yuan Wang
Purpose Thermal fractures initiated under cooling at the surfaces of a 2-D or 3-D structure propagate, arrest and coalesce, leading to its structural failure and material-property changes, while the same processes can happen in the rock mass between parallel hydraulic fractures filled with cold fluid, leading to enhanced fracture connectivity and permeability. Design/methodology/approach This study
-
A comprehensive analysis for classification and regression of surface points based on geodesics and machine learning algorithms Eng. Comput. (IF 1.6) Pub Date : 2023-10-06 Vahide Bulut
Purpose Feature extraction from 3D datasets is a current problem. Machine learning is an important tool for classification of complex 3D datasets. Machine learning classification techniques are widely used in various fields, such as text classification, pattern recognition, medical disease analysis, etc. The aim of this study is to apply the most popular classification and regression methods to determine
-
A subgrid model with multiple relaxation time for lattice Boltzmann method based on the Cartesian grid Eng. Comput. (IF 1.6) Pub Date : 2023-10-06 Aoxiang Qiu, Weimin Sang, Feng Zhou, Dong Li
Purpose The paper aims to expand the scope of application of the lattice Boltzmann method (LBM), especially in the field of aircraft engineering. The traditional LBM is usually applied to incompressible flows at a low Reynolds number, which is not sufficient to satisfy the needs of aircraft engineering. Devoted to tackling the defect, the paper proposes a developed LBM combining the subgrid model and
-
Parameter estimation of Wiener-Hammerstein system based on multi-population self-adaptive differential evolution algorithm Eng. Comput. (IF 1.6) Pub Date : 2023-10-03 Jie Chu, Junhong Li, Yizhe Jiang, Weicheng Song, Tiancheng Zong
Purpose The Wiener-Hammerstein nonlinear system is made up of two dynamic linear subsystems in series with a static nonlinear subsystem, and it is widely used in electrical, mechanical, aerospace and other fields. This paper considers the parameter estimation of the Wiener-Hammerstein output error moving average (OEMA) system. Design/methodology/approach The idea of multi-population and parameter self-adaptive
-
A direct solution to linear constraints in the finite element analysis and its application illustrations Eng. Comput. (IF 1.6) Pub Date : 2023-10-03 Ning Zhang, Hong Zheng, Chi Yuan, Wenan Wu
Purpose This article aims to present a direct solution to handle linear constraints in finite element (FE) analysis without penalties or the Lagrange multipliers introduced. Design/methodology/approach First, the system of linear equations corresponding to the linear constraints is solved for the leading variables in terms of the free variables and the constants. Then, the reduced system of equilibrium
-
CO2 pollution reduction: a tradeoff for fully fuzzy parameters in a megaproject optimization Eng. Comput. (IF 1.6) Pub Date : 2023-09-27 Behzad Paryzad, Kourosh Eshghi
Purpose This paper aims to conduct a fuzzy discrete time cost quality risk in the ambiguous mode CO2 tradeoff problem (FDTCQRP*TP) in a megaproject based on fuzzy ground. Design/methodology/approach A combinatorial evolutionary algorithm using Fuzzy Invasive Weed Optimization (FIWO) is used in the discrete form of the problem where the parameters are fully fuzzy multi-objective and provide a space
-
Improved numerical integration for locking treatment in the Peridynamic Timoshenko beam model Eng. Comput. (IF 1.6) Pub Date : 2023-09-26 Ruqing Bai, Hakim Naceur, Jinglei Zhao, Jin Yi, Jie Ma, Huayan Pu, Jun Luo
Purpose In this paper, the standard Peridynamic Timoshenko beam model accounting for the shear deformation is chosen to describe the thick beam kinematics. Unfortunately, when applied to very thin beam structures, the standard Peridynamics (PD) encounters the shear locking phenomenon, leading to incorrect solutions. Design/methodology/approach PD differs from classical continuum mechanics and other
-
Investigation on smoothed finite element methods using linear tetrahedral elements for high-speed train hollow axle strength analysis Eng. Comput. (IF 1.6) Pub Date : 2023-09-15 Chen Jiang, Ekene Paul Odibelu, Guo Zhou
Purpose This paper aims to investigate the performance of two novel numerical methods, the face-based smoothed finite element method (FS-FEM) and the edge-based smoothed finite element method (ES-FEM), which employ linear tetrahedral elements, for the purpose of strength assessment of a high-speed train hollow axle. Design/methodology/approach The calculation of stress for the wheelset, comprising
-
An intellectual design case of compressor airfoils based on reinforcement learning Eng. Comput. (IF 1.6) Pub Date : 2023-09-15 Xiaohan Xu, Xudong Huang, Ke Zhang, Ming Zhou
Purpose In general, the existing compressor design methods require abundant knowledge and inspiration. The purpose of this study is to identify an intellectual design optimization method that enables a machine to learn how to design it. Design/methodology/approach The airfoil design process was solved using the reinforcement learning (RL) method. An intellectual method based on a modified deep deterministic
-
A spatial local method for solving 2D and 3D advection-diffusion equations Eng. Comput. (IF 1.6) Pub Date : 2023-09-14 Huseyin Tunc, Murat Sari
Purpose This study aims to derive a novel spatial numerical method based on multidimensional local Taylor series representations for solving high-order advection-diffusion (AD) equations. Design/methodology/approach The parabolic AD equations are reduced to the nonhomogeneous elliptic system of partial differential equations by utilizing the Chebyshev spectral collocation method (ChSCM) in the temporal
-
Construction of G2 continuous curve on point-cloud surface Eng. Comput. (IF 1.6) Pub Date : 2023-09-13 Kai Wang, Xiaoping Wang
Purpose The curve construction on surfaces is becoming more and more important in computer-aided design (CAD), computer graphics (CG) and the other related fields. This problem is often encountered in NC machining, tool path generation, automated fiber placement and so on. However, designing curves on curved surfaces is quite different from constructing a curve in Euclidean space. Therefore, the traditional