样式: 排序: IF: - GO 导出 标记为已读
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Dynamic response of semi-cylindrical depression, cylindrical cavity and type-III crack to SH wave in half-space anisotropic media Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-13 Debao Guo, Zailin Yang, Jinlai Bian, Yunqiu Song, Yong Yang
In this study, the anti-plane dynamic response of an elastic half-space anisotropic medium containing surface semi-cylindrical depressions and internal cylindrical cavity and type-III crack is solved analytically. The wave function expansion method, the complex function method and the Green's function method can be used to effectively construct the free wave field equation and the scattered wave field
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Modeling groundwater flow with random hydraulic conductivity using radial basis function partition of unity method Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-12 Fouzia Shile, El Hassan Ben-Ahmed, Mohamed Sadik
Simulating groundwater flows in heterogeneous aquifers is one of the most widely studied problems. The heterogeneity is modeled through random hydraulic conductivity fields log-normally distributed. In this paper, we aim to generate the realization of the log-normal hydraulic conductivity by summing up a finite number of random periodic modes with the Kraichnan algorithm. To address Neumann conditions
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A non-iterative boundary element formulation for nonlinear viscoelasticity Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-12 Ahmet Arda Akay, Ercan Gürses, Serdar Göktepe
In this study, we propose a non-iterative boundary element method (BEM) of highly nonlinear viscoelasticity in time domain. The computationally attractive iteration-free algorithmic structure is achieved by the linearization of a power-type evolution equation. Supplementing the consistent linearization about every solution step with a semi-implicit update scheme, we obtain a robust boundary element
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Numerical investigation of high-dimensional option pricing PDEs by utilizing a hybrid radial basis function - finite difference procedure Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-11 Nawzad M. Ahmed, Fazlollah Soleymani, Rostam K. Saeed
The target of this research is to resolve high-dimensional partial differential equations (PDEs) for multi-asset options, modeled as parabolic time-dependent PDEs. We present a hybrid radial basis function - finite difference (RBF-FD) solver, which combines the advantages of Gaussian and multiquadric functions. Additionally, we employ the Krylov subspace method on the resulting system of ordinary differential
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Learning based numerical methods for acoustic frequency-domain simulation with high frequency Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-10 Tingyue Li, Yu Chen, Yun Miao, Dingjiong Ma
Acoustic simulation in frequency-domain is related to solving Helmholtz equations, which is still highly challenging at high frequency with complex geometries. In this paper, a learning based numerical method (LbNM) is proposed for general boundary value problems of Helmholtz equation. By using Tikhonov regularization, the solution operator is stably learned from various data solutions especially fundamental
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Analyzing non-isothermal phase transition problems with natural convection using peridynamic differential operator Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-08 Baoliang Zhou, Zhiyuan Li, Yanzhou Lu, Dan Huang
In this study, a developed model for non-isothermal phase transition with natural convection is proposed by using peridynamic differential operator (PDDO). The dimensionless governing equations of heat source approach and vorticity-stream function approach are reconstructed into the non-local integral form. The Euler forward difference is used for time integration. The application of the developed
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A batch-filling method of VIE-MoM matrix for inhomogeneous dielectric target with full- and half-SWG function Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-07 Ruqi Xiao, Wen Geyi, Guo Yang, Wen Wu
A batch-filling method (BFM) for generating the volume-integral-equation-methods of moment (VIE-MoM) matrix for the scattering of inhomogeneous objects by using the full- and half-SWG basis function is proposed. The BFM is based on the summation of contributions of all integrals over tetrahedrons and boundary faces, and the contributions are arranged into a column vector that represents the interactions
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Flow regime classification using various dimensionality reduction methods and AutoML Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-07 Umair Khan, William Pao, Karl Ezra Pilario, Nabihah Sallih
Accurate identification of flow regimes is paramount in several industries, especially in chemical and hydrocarbon sectors. This paper describes a comprehensive data-driven workflow for flow regime identification. The workflow encompasses: i) the collection of dynamic pressure signals using an experimentally verified numerical two-phase flow model for three different flow regimes: stratified, slug
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A novel approach for estimating blood flow dynamics factors of eccentric stenotic arteries based on ML Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-07 Yang Li, Detao Wan, Dean Hu, Changming Li
Reliable and rapid estimation of blood flow dynamics factors in eccentric stenotic arteries could significantly improve clinical treatments. Numerical simulation methods such as FSI and CFD are widely used to investigate blood flow conditions. However, both FSI and CFD are computationally expensive and not suitable for large-scale research. This work proposes an effective approach for estimating the
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Cross element integration for superconvergent frequency computation with cubic isogeometric formulation Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-07 Ao Shen, Zhuangjing Sun, Songyang Hou, Dongdong Wang
A superconvergent cross element integration technique is presented for the cubic isogeometric formulation referring to the frequency computation of wave equations. More specifically, a four-element integration cell with 11-point quadrature and an intermediate two-element integration cell with 6-point quadrature are developed in accordance with the optimization of discrete isogeometric frequency error
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Material point method simulation approach to hydraulic fracturing in porous medium Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-07 Fan Sun, Dongsheng Liu, Guilin Wang, Cong Cao, Song He, Xun Jiang, Siyu Gong
Two primary challenges in simulating hydraulic fracturing are the hydro–mechanical coupling and fracture propagation. The material point method (MPM) has advantages over conventional numerical methods by combining the advantages of particle- and mesh-based approaches in handling highly non-linear hydraulic fracturing problems. However, as MPM is primarily utilized for continuous solid simulations,
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An SPIM-FEM adapting coupling approach for the analysis of quasi-brittle media Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-06 Samir Silva Saliba, Lapo Gori, Roque Luiz da Silva Pitangueira
This paper presents an adaptive coupling approach between meshless Smoothed Point Interpolation Methods (SPIMs) and the Finite Element Method (FEM) for the physically nonlinear analysis of quasi-brittle media. The nonlinear behaviour is represented by scalar damage and smeared-crack models. In the proposed adaptive coupling approach, the domain is initially discretised with a relatively coarse FEM
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A novel reduced basis method for adjoint sensitivity analysis of dynamic topology optimization Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-06 Shuhao Li, Jichao Yin, Xinchao Jiang, Yaya Zhang, Hu Wang
In gradient-based time-domain topology optimization, Design Sensitivity Analysis (DSA) of the dynamic response is essential, and requires high computational cost to directly differentiate, especially for high-order dynamic system. To address this issue, this study develops an efficient Reduced Basis Method (RBM)-based discrete adjoint sensitivity analysis method, which on the one hand significantly
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Numerical study of two operator splitting localized radial basis function method for Allen–Cahn problem Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-05 Mahdi Emamjomeh, Mohammad Nabati, Abdollah Dinmohammadi
In this article, we will explore the numerical simulation of the Allen–Cahn equation and provide effective combination methods to efficiently solve it. The Allen–Cahn equation, an equation of mathematical physics, represents a singularly perturbed reaction–diffusion phenomenon that elucidates the phase separation mechanism occurring in multi-component alloy systems. Finding a numerical solution for
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Development of GDDR method for ratcheting analysis of moderately thick plates Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-05 Seyed Iman Shahraini, Mehran Kadkhodayan, Hoda Aslani
In the present paper, a previously introduced numerical method, GDDR (Generalized Differential Dynamic Relaxation), is developed to analyze ratcheting behavior of moderately thick rectangular plates. The validity of the method is verified by comparison with literature data and finite element method results. Classical Plate Theory (CPT) and First-order Shear Deformation Theory (FSDT) are utilized to
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Study on meso‑mechanical properties and failure mechanism of soil-rock mixture based on SPH model Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-05 Gang Zhong, Xiaoqiang Zhang, Shunchuan Wu, Haoyang Wu, Xiong Song
This study adopts the Smoothed Particle Hydrodynamics (SPH) technique to accurately and efficiently replicate and forecast the mesoscopic behavior of soil-rock mixtures (SRM). It introduces a novel approach for generating rock blocks within the SRM, utilizing a method that randomly selects angles and lengths. In addition, this research proposes a method for discretizing any shaped region into free
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Natural convection analysis of magnetic nanofluid in fluid-magnetic coupled filed using the peridynamic differential operator Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-02 Zhanqi Cheng, Xihong Zhang, Yang Yang
In this paper, an updated Lagrangian method based on peridynamic differential operator (PDDO) is proposed to study the natural convection and heat transfer of magnetic nanofluids under the fluid and magnetic coupled filed. The governing Navier-Stokes equations considering the effects of Lorentz force in Magnetohydrodynamics (MHD) and the magnetization intensity in Ferrohydrodynamics (FHD) are reformulated
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Assessment of the edge-based smoothed finite element method for dynamic analysis of the multi-phase magneto-electro-elastic structures Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-03-01 Zhilong Jiang, Qiang Gui, Wei Li, Yingbin Chai
The dynamic behaviors of the well-known multi-phase magneto-electro-elastic (MEE) structures usually receive much attention in designing various intelligent devices, and the finite element method (FEM) is an effective numerical procedure for MEE structural dynamics. However, the relatively high mesh quality is necessary for the FEM to generate reliable results because of the overestimation of stiffness
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Stress singularity analysis for the V-notch with a novel semi-analytical boundary element Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-29 Yifan Huang, Changzheng Cheng, Zongjun Hu, Djimédo Kondo, Raj Das
The stress singularity occurs near a V-notch. The conventional boundary element method can only approach to the exact results with gradually refined mesh. In this paper, by introducing the Williams asymptotic expansion, a novel semi-analytical element is proposed. The new element models the geometry and the known physical fields with linear interpolation, while the unknown physical fields will be simulated
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A novel nodal integration technique for meshfree methods based on the Cartesian transformation approach in the analysis of curved shells Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-29 Thien Tich Truong, Nha Thanh Nguyen, Dinh Kien Nguyen, Vay Siu Lo
In this paper, a novel nodal integration technique for meshfree methods is introduced. This technique is based on the idea of the Cartesian transformation method, which prevents the presence of background cells during the numerical integration process. The Gauss–Lobatto quadrature is used instead of the conventional Gaussian quadrature to create the integration points so that the integration points
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Simulation of the cancer cell growth and their invasion into healthy tissues using local radial basis function method Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-28 Fatemeh Asadi-Mehregan, Pouria Assari, Mehdi Dehghan
Applying mathematical models to simulate dynamic biological processes has been a common practice for a long time. In recent decades, cancer research has also adopted this approach to understand how cancer cell populations grow and spread. This study focuses on a mathematical model that uses a system of PDEs to explain the time-dependent reaction–diffusion interaction among cancer cells, extracellular
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Unified layer-wise model for magneto-electric shells with complex geometry Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-28 J.C. Monge, J.L. Mantari, M.N. Llosa, M.A. Hinostroza
This paper presents a polynomial layer-wise model in the framework of Carrera's Unified Formulation for the bending analysis of a magneto-electric shells with variable radii of curvature. A parametric surface is used to model the middle surface of the shell. Lame Parameters and Radius of Curvature are calculated by using Differential Geometry. The mechanical displacement, along with the electric and
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3D meshless modeling of piezoelectric structure based on the radial point interpolation method Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-27 Ying He, Jiwei Li
Piezoelectric materials find widespread applications in high-precision actuators and sensors. However, the traditional finite element method falls short in meeting the simulation needs of piezoelectric structures due to complexities in mesh generation and precision requirements for accurate simulations. This paper focuses on adapting and generalizing the meshless modeling technique based on the radial
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Numerical modeling techniques for shield tunnel lining structure using the numerical manifold method (NMM) Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-24 Pengfei Yan, Bangke Ren, Yongchang Cai
An advanced and reasonable calculation for lining structure is very import for rapid structural design and safe construction of shield tunnel. This work extends the numerical manifold method (NMM) for simulating shield tunnel lining structure. In the present method, a contact model based on virtual thin layer is developed for simulating the complex mechanical behaviors of segmental joint. The steel
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A GFDM approach based on the finite pointset method for two-dimensional piezoelectric problems Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-24 Felix R. Saucedo-Zendejo, Jorge L. Medrano-Mendieta, Adriana G. Nuñez-Briones
In this article a novel Generalized Finite Difference Method (GFDM) derived from the so-called Finite Pointset Method (FPM) is presented and discussed for the first time to solve two-dimensional piezoelectric structures. In this approach, the approximation of the field variables depends on both the governing equations and the local problem discretization, and it incorporates the minimization of the
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A meshless method based on the modified moving Kriging interpolation for numerical solution of space-fractional diffusion equation Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-24 A. Habibirad, O. Baghani, E. Hesameddini, M.H. Heydari, H. Azin
Fractional differential equations (FDEs) offer numerous capabilities for modeling unusual phenomena. So, the study of these models is essential. This paper proposes an efficient meshless technique for obtaining the numerical solution of a space fractional diffusion model with Caputo derivative type. Typically, in a meshless processes based on moving Kriging (MK) interpolation, the MK technique is used
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Recent trends and new developments in molecular dynamics and lattice Boltzmann methods Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-23 Arash Karimipour
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A unified formulation and the boundary discontinuous Fourier method for clamped functionally graded shells Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-23 RW Laureano, JL Mantari, J Yarasca, AS Oktem, J Monge, Xueqian Zhou
In the present work, analytical numerical solutions of the static behavior of fully clamped functionally graded (FG) doubly-curved panels are presented. The mechanical model is based on the Carrera Unified Formulation (CUF) under the Equivalent-Single-Layer (ESL) approach. The governing equations, in their strong form, are derived from the Principle of Virtual Displacements (PVD). The main novelty
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A novel highly accurate Trefftz attitude towards bending and free vibration analysis of doubly-curved laminated and sandwich shallow shells Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-23 Ali Reza Motamedi, Nima Noormohammadi, Bijan Boroomand
This paper extends the meshless local exponential basis functions to the analysis of doubly curved laminated and sandwich shallow shells. The method discretizes the shell domain by some nodes at which the degrees of freedom are defined. A specific number of nearby nodes, only based on their distance, are selected as a cloud. Within every cloud, the total solution is set in homogeneous and particular
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Numerical modelling of CO2 leakage through fractured caprock using an extended numerical manifold method Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-23 Hao Sun, Chao jia, Feng Xiong, Zhijun Wu
In this study, the cohesive element-based numerical manifold method (Co-NMM) and unified pipe network method (UPM) are further developed and integrated to analyze the CO leakage through fractured caprock considering CO-water two-phase flow, CO adsorption and deformation of both caprock matrix and fractures. First, the Co-NMM is modified to better treat complex discrete fracture networks (DFNs) problems
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Analysis of the vibration mitigation effects of pile barrier in unsaturated ground using the coupled BE and FE method Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-22 Shaoyi Li
The ground vibration mitigation effects of pile barriers in unsaturated ground were analysed numerically. The numerical model for the ground was established using the boundary element method (BEM) with the soil being simulated as the unsaturated poroviscoelastic medium. To solve the boundary element governing equations, the fundamental Green solutions of the unsaturated medium was derived using the
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Modeling and experiments on the vibro-acoustic analysis of ring stiffened cylindrical shells with internal bulkheads: A comparative study Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-21 Cong Gao, Jiawei Xu, Fuzhen Pang, Haichao Li, Kai Wang
The vibro-acoustic response of ring stiffened cylindrical shells with internal bulkheads under forced excitation is presented. The numerical analysis model is established using the Jacobi Ritz-Boundary element method. The first-order shear deformation theory, multi-segment technique and artificial spring technology are applied to establish the theoretical model, and the Jacobi orthogonal polynomials
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Calculating inductance in a 2-D method of moments model Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-21 Ross A. Howard, Daniel C. Horvath, Steven D. Pekarek
Closed-form expressions are derived to compute self- and mutual-inductance in method of moments based models of low frequency magnetic components (e.g. electric machinery). Several inductor core configurations are utilized to illustrate their applicability and to validate the expressions. Validation is provided by comparing the results to those obtained using commercial finite element based models
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A locking-free and accurate collocation method for nearly incompressible and incompressible plane elasticity Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-21 Shuiqiang Zhang, Haiyang Gong, Zikang Xu, Yuqing Zheng, Yongli Wang, Lin Chang
We present a barycentric Lagrange interpolation collocation method (BLICM) and investigate its capability in avoiding volumetric locking in nearly incompressible and incompressible plane elasticity. Specifically, the governing equations of plane elasticity are expressed as mixed formulas combining displacement and pressure. The unknown functions of displacement and pressure are approximated using barycentric
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Simplified based parallelization approaches for pile-soil-pile interactions Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-19 Shaher E. Aboeldahab, Ahmed Fady Farid, Youssef F. Rashed, Ahmed H. Yousef
Computation of piled-raft interaction effects based on boundary element method (BEM) achieves high accuracy. However, it's not preferred, due to the impractical requirement for huge computational time. In this paper, a simplified coding technique which is generally applicable to any BEM application is demonstrated for pile-soil-pile interaction problems. The proposed simplified technique is based on
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A time-domain local radial basis function collocation method for the band structure analysis of 2D anti-plane phononic crystals Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-19 X.B. Yan, Hui Zheng, Chuanzeng Zhang, P.H. Wen, J. Sladek, V. Sladek
In this paper, a time-domain local radial basis function collocation method (LRBFCM) combined with the Houbolt method is developed for the anti-plane elastic wave propagation analysis in 2D phononic crystals. The periodic boundary conditions are applied to a unit-cell to simplify the analysis. In the first step, the time-dependent displacement field is computed by using the proposed time-domain LRBFCM
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The meshless radial point interpolation method with ρ∞-Bathe implicit time discretization algorithm for transient elastodynamic analysis Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-17 Xiaoyan Zhang, Hongjun Xue, Jiaao Cheng
In this work the novel ρ-Bathe direct time integration algorithm is combined with the classical meshless radial point interpolation method to solve transient elastodynamic problems. The present combined numerical approach makes the best use of high computation accuracy of the RPIM in spatial discretization and high numerical stability of the ρ-Bathe method in temporal discretization. In addition, we
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Wavelet-based dual reciprocity BEM for band-structure calculations of 3D fluid/fluid and solid/solid phononic crystals Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-16 Qi Wei, Jiawei Xiang, Weiping Zhu, Hongjiu Hu
The boundary element method (BEM) is presented to calculate the band-structure of three-dimensional fluid/fluid and solid/solid phononic crystals first time. The frequency-independent fundamental solutions are used as weight functions for deriving integral equations in a unit cell, which can avoid the related nonlinear eigenvalue problems. The dual reciprocity method is employed to handle the domain
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Solving slender axisymmetric structures using the boundary element method Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-13 Rafael Pacheco Stikan, Leonardo Caputo de Moura, Carlos Friedrich Loeffler, Luciano de Oliveira Castro Lara
In addition to the well-known advantages of mesh generation and straightforward data entry, the Boundary Element Method presents high precision for solving axisymmetric problems. However, many axisymmetric industrial problems involve structures that often have thin walls. This characteristic discourages the employment of axisymmetric models comparatively to the three-dimensional elements or other options
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Comparative study on domain decomposition methods for solving multi-domain potential problems by DiBFM Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-13 Rongxiong Xiao, Jianming Zhang, Yang Yang, Chong Zhang
Domain decomposition method (DDM) is an efficient tool for solving multi-domain problems. Many kinds of DDM have been proposed in literature, such as the -N alternating method and optimized Schwarz method, etc. The main difference between these methods lies in the transmission conditions on the interfaces between subdomains. Most DDMs have at least one relaxation parameter which must be properly chosen
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Nonlinear vibration of axially moving plates partially in contact with liquid via Chebyshev collocation method Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-09 Feng Liu Yang, Yan Qing Wang
This paper analyzes nonlinear free vibration of plates that move axially and in partial contact with liquid. The von Kármán nonlinear plate theory is employed in the theoretical model. The fluid is characterized as an ideal fluid and represented using the velocity potential and Bernoulli's equation. The fluid pressure exerted on the plate is equivalent to a virtual additional mass, which is considered
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The numerical investigation of a solar thermal collector with double-twisted tape insert absorber tube; the prediction of outlet temperature through a machine learning model Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-08 Yasser Elmasry, Rishabh Chaturvedi, Evgeny Solomin, Ghassan Fadhil Smaisim, Salema K. Hadrawi
Solar thermal collectors are devices that can be mounted on rooftops of buildings for domestic hot water or space heating applications. The higher the thermal performance of this instrument the lower the cost and size of that. Here, the three-dimensional numerical analysis of water flow inside the absorber of a solar thermal collector with a dual-twisted tape turbulator is investigated. The influences
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Grain-based modeling study of time-dependent mechanical behavior of brittle rocks in deep underground caverns based on the stress corrosion model Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-08 Shu-ling Huang, Xiu-li Ding, Quan-gang Lv, Xiu-yang Liu, Ding-ping Xu
Failure and instability in deep underground caverns, such as delayed rockburst and time-dependent deformations, are not immediate after excavation. These phenomena are closely linked to the complex stress conditions affecting deformation and fracture mechanisms in brittle rock over time. Therefore, understanding the mesoscopic evolution mechanism of time-dependent deformation and fracture in brittle
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A low-frequency fast multipole boundary element method for acoustic problems in a subsonic uniform flow Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-07 Xueliang Liu, Jianghai Xu
The fast multipole method (FMM) based on the plane wave expansion is known to suffer from numerical instability in the low-frequency regime. This paper presents a low-frequency fast multipole boundary element method (LF-FMBEM) for acoustic problems in a subsonic uniform flow. First, a hybrid convected boundary integral formula based on the Burton-Miller method is derived to overcome the non-uniqueness
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The versatile polyhedral elements of Cosserat continuum theory based on SBFEM and its application Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-07 Xiupeng Nie, Degao Zou, Kai Chen, Jingmao Liu, Xianjing Kong, Yongqian Qu
The Cosserat continuum offers high accuracy in micro-structure analysis and stress concentration simulation due to its consideration of mechanical factors such as coupled stress and internal length scale. However, existing methods are mainly developed based on the isoparametric conventional continuum framework, with relatively simple element shapes and weak adaptability to complex geometries. Therefore
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A collaborating approach for hole detection with the numerical manifold method and Elman neural network Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-05 G.Y. Zheng, C.L. Li, D.L. Guo, H.H. Zhang, X.L. Ji, S.Y. Han
Structural health monitoring plays a significant role in the field of public safety, of which flaws (such as holes and cracks) identification is a very challenging topic. In this work, an inverse model based on two-dimensional numerical manifold method (NMM) and the Elman neural network (ENN) is proposed for holes detection in linear elastic material. The NMM is firstly used to compute the displacements
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The potential of optimized floating photovoltaic system for energy production in the Northern Lakes of Egypt Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-05 Nabil A.S. Elminshawy, Asmaa Ahmed, Amr Osama, A.E. Kabeel, Osama Elbaksawi
The deployment of floating photovoltaics (FPVs) is growing substantially in maritime locations. Despite the advantages gained from FPVs, it can still suffer from radiation fluctuation, which severely harms the system's production. Avoiding such obstacles can help countries like Egypt to increase their clean electricity production from its huge natural Northern Lakes. The adoption of soft computing
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The fast multipole boundary element method for anisotropic material problems under centrifugal loads Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-05 D.D.C. Mateus, A.B. Dias, L.S. Campos, J.F. dos Santos, E.L. Albuquerque
This paper presents a two-dimensional fast multipole boundary element method designed for the efficient analysis of large-scale anisotropic elastic problems subjected to centrifugal loads. The expansions and fast multipole operations employed in this study bear resemblances to those utilized in existing formulations of the fast multipole boundary element method, previously proposed for addressing potential
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Searching slope critical slip surface based on the NMM and equivalent plastic strain Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-03 Shuai Zhu, Zhoujiaozi Yu, Fei Tan, Jiahe Lv
Slope failure is a major hazard that threatens human lives and properties. Locating the critical slip surface (CSS) is more challenging than calculating the factor of safety (Fs) in slope stability analysis. There are some limitations in the existing methods for identifying the CSS. In this study, we propose a novel approach for determining the CSS. The strength reduction method (SRM) is introduced
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The inverse design of auxetics using the boundary element method and the constrained conjugate gradient method Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-03 Hua-Yu Liu, Yong-Tong Zheng, Xiao-Wei Gao, Hai-Feng Peng
In this paper, an inverse design method for auxetic metamaterials is proposed. The conjugate gradient method is employed to minimize the errors of the required parameters of the designed shape. The interior point penalty method is used to convert constrained inverse problems into unconstrained ones. Using the Taylor expansion, the optimizing step size is derived as well. The boundary element method
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Topological design for isotropic metamaterials using anisotropic material microstructures Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-03 Jianhua Xiang, Jing Chen, Yongfeng Zheng, Ping Li, Jiale Huang, Zhipeng Chen
Isotropic porous materials retain the same physical properties in any direction, regardless of the measurement direction. Therefore, mechanical metamaterials with isotropic properties are widely welcomed in engineering. Most of the existing artificial isotropic structures are composed of isotropic solid materials, and the design approach is singular and limited. There are numerous anisotropic materials
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Flexural behaviors and free vibration responses of hybrid plates coupled with piezoelectric laminae Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-03 Pengchong Zhang, Yunchao Chang, Shuai Qi, Siqiang Gan, Haohao Xu
The static flexural behaviors and free vibration responses of smart hybrid plates integrated with piezoelectric laminae are under discussion aided by the scaled boundary finite element method (SBFEM) in conjunction with the precise integration technology (PIT). In the composite plate, the core substrate is coated by the surface piezoelectric layers and conditions of displacement compatibility and stress
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Study on vibro-acoustic performances of coupled orthogonally stiffened cylindrical shell-inner foundation system using wavenumber analysis method Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-02 Duoting Wu, Jinpeng Su, Hongxing Hua, Feng Chen, Xiangci Meng
The present work intends to provide physical insights into the vibro-acoustic performances of coupled orthogonally stiffened cylindrical shell-inner foundation system, which have seldomly been conducted from the perspective of wave propagation. A semi-analytical method integrating the modified variational method and Kirchhoff-Helmholtz integral equation is first proposed for the vibro-acoustic responses
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An intelligent approach to investigate the effects of container orientation for PCM melting based on an XGBoost regression model Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-02 Burak Kıyak, Hakan F. Öztop, Fatih Ertam, İ. Gökhan Aksoy
The orientation of the container filled with phase change material (PCM) is a critical parameter that significantly effects the performance of thermal energy storage systems. In this study, the Computational Fluid Dynamics (CFD) method is utilised to analyse the effects of container position on the melting process of PCM. Unlike conventional methods, the melting process of PCM was conducted using the
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Richardson extrapolation and strain energy based partition of unity method for analysis of composite FG plates Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-02 P.V. Jeyakarthikeyan, Siddarth Subramaniam, Vikalp Charuasia, S. Vengatesan, Tinh Quoc Bui
This work focuses on numerical analysis of static bending and free vibration of Functionally Graded plates (FGP) using Reissner–Mindlin theory with interior holes employing an effective Richardson extrapolation-based reduced integration (REQ) approach and strain energy. The partition of unity method is used to articulate stabilizing function locally, which possesses the local stabilizing ability to
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Advanced spectral boundary integral equation method for modeling wave propagation in elastic metamaterials with doubly periodic arrays of rectangular crack-like voids Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-01-30 Mikhail V. Golub, Viktor V. Kozhevnikov, Sergey I. Fomenko, Evgenia A. Okoneshnikova, Yan Gu, Zheng-Yang Li, Dong-Jia Yan
To investigate accurately unique and advanced wave properties in elastic metamaterials advanced and efficient numerical methods are needed. The paper presents an extended boundary integral equation method for simulating elastic wave scattering by doubly periodic arrays of rectangular crack-like voids. The convergence of the arising double series is proved and the convergence rate is carefully analyzed
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Explicit solution for stress and displacement in physical domain of layered transverse-isotropic soil under strip footing Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-01-31 Xiangyu Sha, Aizhong Lu, Ning Zhang
This paper presents explicit expressions of stress and displacement in the physical domain of layered transversely isotropic soil under strip footing for the first time. The method proposed in this study is not only applicable to analysing problems related to flexible footings, but can also be utilized for analysing problems related to rigid footings. The stress function of each layer can be represented
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NumCalc: An open-source BEM code for solving acoustic scattering problems Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-01 Wolfgang Kreuzer, Katharina Pollack, Fabian Brinkmann, Piotr Majdak
The calculation of the acoustic field in or around objects is an important task in acoustic engineering. The open-source project Mesh2HRTF and its BEM core NumCalc provide users with a collection of free tools for acoustic simulations without the need of having an in-depth knowledge into numerical methods. However, we feel that users should have a basic understanding with respect to the methods behind
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Effect of polycaprolactone percentage on thermal and mechanical behavior of polyurethane/polycaprolactone/graphene oxide nanocomposite utilizing molecular dynamics simulation Eng. Anal. Bound. Elem. (IF 3.3) Pub Date : 2024-02-01 Shapour Fadaei Heydari, Mohamad Shahgholi, Mehdi Salehi, Seyed Ali Galehdari
Shape memory polymers belong to a category of smart materials capable of changing their predetermined shape in response to specific stimuli like temperature, electricity, or magnetic fields. Polycaprolactone is an example of a biodegradable polyester from the aliphatic polyester family that has been extensively studied due to its unique mechanical properties, compatibility with various polymers, and