Article
Mechanics
P. Phung-Van, A. J. M. Ferreira, H. Nguyen-Xuan, Chien H. Thai
Summary: A scale-dependent nonlocal strain gradient isogeometric model is proposed for metal foam nanoscale plates with various porosity distributions, efficiently capturing nonlocal and strain gradient effects. By investigating parameters such as porosity distribution, length-to-thickness ratios, boundary conditions, etc., the model explores static and dynamic deflections of metal foam nanoplates.
COMPOSITE STRUCTURES
(2021)
Article
Nanoscience & Nanotechnology
Thanh Cuong-Le, Khuong D. Nguyen, Hoang Le-Minh, Phuong Phan-Vu, Phuoc Nguyen-Trong, Abdelouahed Tounsi
Summary: This study investigates the linear and nonlinear solutions of Sigmoid Functionally Graded Material (S-FGM) nanoplate with porous effects using the strain gradient theory and isogeometric finite element formulation. The study examines the influence of porosity distributions, power indexes, aspect ratios, nonlocal and strain gradient parameters on the bending responses of the porous S-FGM nanoplate.
ADVANCES IN NANO RESEARCH
(2022)
Article
Engineering, Civil
Fan Fan, Babak Safaei, Saeid Sahmani
Summary: The study shows that considering geometric nonlinearity and moving to deeper part of the postbuckling regime reduces the significance of both nonlocality and strain gradient size dependencies. Additionally, increasing the material property gradient index results in an enhancement of nonlocal and strain gradient size effects, especially in the deeper part of the postbuckling domain. Moreover, the study demonstrates that the porosity index has a negligible influence on the significance of size dependencies for a PFGM micro/nano-plate, regardless of the boundary conditions.
THIN-WALLED STRUCTURES
(2021)
Article
Mechanics
Chien H. Thai, A. M. J. Fereira, H. Nguyen-Xuan, P. Phung-Van, P. T. Hung
Summary: In this study, a nonlocal strain gradient isogeometric model for free vibration analysis of magneto-electro-elastic (MEE) nanoplates made of functionally graded (FG) materials is presented. The model takes into account higher-order shear deformation theory, nonlocal strain gradient theory, and isogeometric analysis method. The stiffness of MEE-FG nanoplates is shown to be influenced by two scale parameters. The natural frequency of the nanoplates is evaluated by considering the power-law scheme, geometrical parameter, nonlocal parameter, strain gradient parameter, electric voltage, and magnetic potential. The results obtained using nonlocal strain gradient theory (NSGT) are compared to those obtained using classical theory.
COMPOSITE STRUCTURES
(2023)
Article
Computer Science, Interdisciplinary Applications
P. Phung-Van, Chien H. Thai
Summary: This paper introduces a novel nonlocal strain gradient isogeometric model for functionally graded carbon nanotube-reinforced composite nanoplates, capturing both nonlocal effects and strain gradient effects. The model is based on higher-order shear deformation theory and virtual work principle, and is analyzed using isogeometric analysis to study the deflection and natural frequency of nanoplates. The effects of nonlocal parameter, strain gradient parameter, CNT volume fraction, CNT distributions, and length-to-thickness ratios on deflection and natural frequency are examined through numerical results. Stiffness-softening and stiffness-hardening mechanisms are shown by the present model.
ENGINEERING WITH COMPUTERS
(2022)
Article
Computer Science, Interdisciplinary Applications
Chien H. Thai, H. Nguyen-Xuan, P. Phung-Van
Summary: This paper presents a size-dependent high-order shear deformation theory (HSDT) model for analyzing the static and free vibration of laminated composite and sandwich nanoplates. By introducing scale parameters, the size effect of nanostructures is considered, and a virtual work principle is used to establish the bending and free vibration analysis model. The results show that the characteristics of the nanostructures are influenced by the geometry, boundary condition, length-to-thickness ratio, strain gradient parameter, and nonlocal parameter.
ENGINEERING WITH COMPUTERS
(2023)
Article
Mathematics, Applied
Xinte Wang, Juan Liu, Biao Hu, Bo Zhang, Huoming Shen
Summary: This study investigates the wave propagation characteristics of porous nanoshells made of barium titanate and cobalt ferrite, with simulated porosity distribution and the use of nonlocal strain gradient theory and first-order shear deformation theory. Various parameters, such as dimensionless scale parameters and bi-directional functionally graded indices, are examined to understand their influence on wave propagation characteristics. The findings suggest that the dispersion relationship is related to the ratio of scale parameters, and the wave propagation characteristics depend on the bi-directional functionally graded indices.
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
(2023)
Article
Mechanics
Manjur Alam, Sudib K. Mishra
Summary: This study investigates the geometrically nonlinear vibration of NL-SG beams on a nonlinear substrate with shear interactions. It includes higher-order curvature, von Karman nonlinearity, and a nonlinear Pasternak model for the substrate. The research shows that nonlinear bending and substrate stiffness play a dominant role in influencing the vibration behavior, while the NL and SG interactions significantly affect the vibration behavior with the effect of functional gradation of material being minor.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Civil
Chien H. Thai, P. T. Hung, H. Nguyen-Xuan, P. Phung-Van
Summary: In this paper, a new size-dependent meshfree method is introduced to analyze the free vibrations of magneto-electro-elastic (MEE) functionally graded (FG) nanoplates. The method combines the nonlocal strain gradient theory (NSGT), the higher-order shear deformation theory (HSDT), and meshfree method for the first time. The effective material properties of MEE-FG nanoplates are expressed using a power-law scheme. Numerical examples are given to investigate the effect of various parameters on the natural frequency of MEE-FG nanoplates.
ENGINEERING STRUCTURES
(2023)
Article
Mechanics
Fan Fan, Saeid Sahmani, Babak Safaei
Summary: This study investigates the size-dependent analysis of the geometrically nonlinear vibration response of micro/nano-plates made of porous functionally graded material (PFGM) with and without a central cutout, considering nonlocality and strain gradient size dependencies. It is found that the increase in nonlinear frequency due to the strain gradient size effect is greater than the reduction caused by nonlocality. Additionally, there is a specific length to thickness ratio value at which the nonlocal strain gradient frequency ratio becomes minimum, and this value increases with the porosity index of PFGM micro/nano-plates.
COMPOSITE STRUCTURES
(2021)
Article
Computer Science, Interdisciplinary Applications
P. Phung-Van, H. Nguyen-Xuan, Chien H. Thai
Summary: This paper investigates the free vibration analysis of functionally graded graphene platelet-reinforced composites (FG GPLRC) plates using a nonlocal strain gradient isogeometric model based on the higher order shear deformation theory. Various distributed patterns of graphene platelets (GPLs) are considered, and the effects of different parameters on the natural frequencies of the nanoplates are examined. The results obtained in this study can serve as benchmark results for further research on FG GPLRC nanoplates.
ENGINEERING WITH COMPUTERS
(2023)
Article
Mathematics, Applied
Rui Song, S. Sahmani, B. Safaei
Summary: This study investigates the thermal postbuckling characteristics of a PFGM microplate with various central cutout shapes using isogeometric numerical technique. The results show that the effects of size dependency decrease as the thermal postbuckling regime deepens, while the central cutout has a significant impact on the temperature rise in the absence of nonlocality and inclusion of strain gradient size effects.
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
(2021)
Article
Engineering, Mechanical
Tran Quoc Thai, Xiaoying Zhuang, Timon Rabczuk
Summary: The study presents a nonlinear Kirchhoff-Love micro-shell element based on isogeometric analysis and couple stress theory, utilizing high-order NURBS functions to analyze strain gradient effects and efficiently examine geometric nonlinearities of thin micro-shell structures. The IGA formulation is validated through comparisons with analytical solutions, experimental data, and other benchmark problems, showing its suitability for analyzing two-dimensional materials at larger length scales commonly studied at the nanoscale.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Computer Science, Interdisciplinary Applications
Shan-Xiang Chen, Saeid Sahmani, Babak Safaei
Summary: By utilizing the NURBS-based isogeometric technique, the size-dependent geometrically nonlinear bending characteristics of microplates made of porous FGMs were studied. It was found that the influence of both nonlocality and strain gradient decreases and that a central cutout can change the trend of load-deflection response.
ENGINEERING WITH COMPUTERS
(2021)
Article
Mechanics
Amin Vahidi-Moghaddam, Arman Rajaei, Ehsan Azadi Yazdi, Mohammad Eghtesad, Dan Sorin Necsulescu
Summary: This paper investigates the nonlinear forced vibrations of homogeneous Euler-Bernoulli microbeams with clamped-clamped boundary conditions. By incorporating the nonlocal strain gradient theory, the governing nonlinear partial differential equation of motion including mid-plane stretching and damping effects is derived. Through the Galerkin approach, a reduced equation of motion is obtained under a central harmonic force. The perturbation technique is used to examine the nonlinear forced vibration behavior of the microbeam, and the simulation results show the role of size effect on the vibration behavior. Moreover, the effects of different physical parameters on the vibration behavior of the microbeam are studied. Finally, the proposed approach is compared with a numerical solution to validate the accuracy and validity of the presented analytical solution.
MECHANICS BASED DESIGN OF STRUCTURES AND MACHINES
(2023)
Article
Computer Science, Interdisciplinary Applications
Chien H. Thai, A. J. M. Ferreira, H. Nguyen-Xuan, Lieu B. Nguyen, P. Phung-Van
Summary: This paper proposes a nonlocal strain gradient meshfree plate approach for the bending and free vibration analyses of laminated composite and sandwich nanoplates. The deflection and natural frequency of the plates are significantly influenced by the nonlocal and strain gradient parameters. The results show that both models coincide when the nonlocal and strain gradient parameters are taken as zero.
ENGINEERING WITH COMPUTERS
(2023)
Article
Computer Science, Interdisciplinary Applications
Khuong D. Nguyen, Cuong-Le Thanh, H. Nguyen-Xuan, M. Abdel-Wahab
Summary: Porosity has been studied for its effect on crack propagation in functionally graded materials (FGM) structures, using a hybrid phase-field approach. The study showed that using a local refinement multi-patch algorithm based on the Virtual Uncommon-Knot-Inserted Master-Slave (VUKIMS) technique in the framework of isogeometric analysis (IGA) can significantly reduce the computational cost, while achieving the desired accuracy with cubic NURBS elements.
ENGINEERING WITH COMPUTERS
(2023)
Article
Computer Science, Interdisciplinary Applications
Chien H. Thai, H. Nguyen-Xuan, P. Phung-Van
Summary: This paper presents a size-dependent high-order shear deformation theory (HSDT) model for analyzing the static and free vibration of laminated composite and sandwich nanoplates. By introducing scale parameters, the size effect of nanostructures is considered, and a virtual work principle is used to establish the bending and free vibration analysis model. The results show that the characteristics of the nanostructures are influenced by the geometry, boundary condition, length-to-thickness ratio, strain gradient parameter, and nonlocal parameter.
ENGINEERING WITH COMPUTERS
(2023)
Article
Cardiac & Cardiovascular Systems
Daniel Matos, Pedro Adragao, Cristiano Pisani, Vinicius Hatanaka, Pedro Freitas, Francisco Costa, Muhiedinne Chokr, Carina Hardy, Antonio Miguel Ferreira, Pedro Carmo, Sissy Laura, Francisco Morgado, Diogo Cavaco, Miguel Mendes, Mauricio Scanavacca
Summary: The study compared the efficacy and safety of combined (C-ABL) and non-combined (NC-ABL) endo-epicardial ventricular tachycardia (VT) ablation. The results showed that a combined or sequential ablation strategy was associated with lower VT recurrence and lower all-cause death in patients with ischemic heart disease and non-ischemic cardiomyopathy undergoing repeated procedures. Both approaches seemed equally safe.
JOURNAL OF INTERVENTIONAL CARDIAC ELECTROPHYSIOLOGY
(2023)
Article
Mechanics
Hau Nguyen-Ngoc, Thanh Cuong-Le, Khuong D. Nguyen, H. Nguyen-Xuan, Magd Abdel-Wahab
Summary: This study proposes numerical models of three-dimensional (3D) shells made of multi-directional functionally graded material (FGM) using polyhedral finite element methods with arbitrary polyhedral elements (Poly-FEM). The effects of shell thickness and the variation of material properties based on the power law are investigated. Two latest interpolation schemes, namely polytopal composite scheme (PCEM) and consecutive interpolation scheme (CIPFEM), are used for analysis. Verification studies show that the results obtained from these schemes are reliable. Static and dynamic analyses are conducted to investigate the displacement, normal stress, and free vibration of the shell.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Civil
Vuong Nguyen-Van, Junli Liu, Shuai Li, Guomin Zhang, H. Nguyen-Xuan, Phuong Tran
Summary: This study develops a computational framework to predict crack patterns of 3D printed fiber-reinforced concrete beams, and the experimental results are in good agreement with the finite element analysis.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Sandeep Kshirsagar, H. Nguyen-Xuan, G. R. Liu, Sundararajan Natarajan
Summary: In this paper, three different smoothed finite element methods, NS-FEM, FS-FEM, and a-FEM, are used for 3D solids with large deformation. The common feature of these techniques is the introduction of smoothed strain as a weighted average of the compatible strain field over smoothing domains. The implementation of SFEM in Abaqus software is challenging due to the interconnected SFEM elements at the elemental level. However, this work effectively addresses the challenges and provides a validated implementation for benchmark examples and real-life problems.
INTERNATIONAL JOURNAL OF COMPUTATIONAL METHODS
(2023)
Article
Materials Science, Multidisciplinary
F. Ramezani, R. J. C. Carbas, E. A. S. Marques, A. M. Ferreira, L. F. M. da Silva
Summary: Thin-plies are gaining interest for high-performance applications like aerospace, and replacing layers of CFRP with thin-ply in a unidirectional composite laminate can delay delamination. A study on angle-plied composite laminates under out-of-plane tensile loading reveals that they have higher failure load due to the more complex crack path.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Mechanics
M. Bacciocchi, N. Fantuzzi, A. M. A. Neves, A. J. M. Ferreira
Summary: Nonlocal elasticity is gaining popularity for capturing size-dependent effects and incorporating advanced constituents. This paper introduces the strain gradient theory into thin plate formulation, using a finite element model based on higher-order Hermite interpolating functions. The mechanical behavior of laminated composite square plates with holes, which cannot be solved analytically, is evaluated using this method.
MECHANICS RESEARCH COMMUNICATIONS
(2023)
Article
Materials Science, Composites
Farin Ramezani, Ricardo J. C. Carbas, Eduardo A. S. Marques, Antonio M. Ferreira, Lucas F. M. da Silva
Summary: The study investigates the behavior of composite laminates under transverse tensile loading to address the delamination issue in bonded single lap joints. Hybrid laminates reinforced by thin-ply are found to have higher failure load compared to conventional CFRP or thin-ply laminates, due to the higher ductility enabled by the thin-plies.
POLYMER COMPOSITES
(2023)
Article
Mathematics, Applied
Thang Le-Duc, H. Nguyen-Xuan, Jaehong Lee
Summary: In this study, a novel deep learning model called Finite-element-informed neural network (FEI-NN) is proposed for parametric simulation of static problems in structural mechanics. The approach uses supervised training to consider the parametric variables of structures as input features and implicitly embeds the spatial variables into the loss function through a soft constraint called finite element analysis (FEA) loss. The training process minimizes the empirical risk function while partially respecting the mechanical behaviors through the FEA loss, which is defined as a residual calculated from the weak form of the surrogate system scaled from the actual structure. Additionally, a technique based on batch matrix multiplication is introduced to reduce the time complexity for estimating the FEA loss. The method is demonstrated to outperform traditional data-driven approaches in terms of faster convergence and better DNN models for both generalization and extrapolation performance through several experiments.
FINITE ELEMENTS IN ANALYSIS AND DESIGN
(2023)
Article
Computer Science, Artificial Intelligence
Thang Le-Duc, Quoc-Hung Nguyen, Jaehong Lee, H. Nguyen-Xuan
Summary: In this article, the advantages of heuristic mechanisms are explored, and a new optimization framework named sequential motion optimization (SMO) is devised to enhance gradient-based methods. Inspired by balancing composite motion optimization (BCMO), SMO establishes a sequential motion chain of gradient-guided individuals to improve parameter updates. Experimental results show that SMO outperforms vanilla stochastic gradient descent (SGD) implemented via backpropagation (BP) algorithm in terms of training quality on various benchmark datasets. It is suggested that SMO has the potential to be combined with other gradient-based variants for improving its effectiveness in solving large-scale optimization problems.
IEEE TRANSACTIONS ON EVOLUTIONARY COMPUTATION
(2023)
Article
Engineering, Mechanical
Pisit Watanavit, Naruethep Sukulthanasorn, Elena Atroshchenko, Hung Nguyen-Xuan, Jaroon Rungamornrat
Summary: This paper presents a weakly singular boundary integral equation method (BIEM) for the full analysis of near-interface cracks in three-dimensional linear elastic multimaterial bodies. A system of integral equations governing unknown data on the boundary, crack surface, and material interface was established using weakly singular weak-form displacement and traction integral equations together with continuity along the material interface. The proposed technique was implemented using a symmetric Galerkin boundary element method and finite element technique.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Article
Mechanics
Chien H. Thai, A. M. J. Fereira, H. Nguyen-Xuan, P. Phung-Van, P. T. Hung
Summary: In this study, a nonlocal strain gradient isogeometric model for free vibration analysis of magneto-electro-elastic (MEE) nanoplates made of functionally graded (FG) materials is presented. The model takes into account higher-order shear deformation theory, nonlocal strain gradient theory, and isogeometric analysis method. The stiffness of MEE-FG nanoplates is shown to be influenced by two scale parameters. The natural frequency of the nanoplates is evaluated by considering the power-law scheme, geometrical parameter, nonlocal parameter, strain gradient parameter, electric voltage, and magnetic potential. The results obtained using nonlocal strain gradient theory (NSGT) are compared to those obtained using classical theory.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Multidisciplinary
Dongliang Ji, Hui Cheng, Hongbao Zhao
Summary: The influence of crystal size on the macroscopic parameters of sandstone samples is studied using a rock model based on the Voronoi tessellated model. It is found that decreasing crystal size results in increased strength and elastic modulus. Strain energy density (SED) is shown to help explain the failure mechanisms of the sandstone samples. A constitutive model that considers the heterogeneity in elastic modulus and rock strength is developed and is in good agreement with experimental results. The study also identifies the triggering of surface damage on slopes by vibration excitation in engineering applications as well as proposes a constitutive model for quantitatively evaluating damage accumulation in mining tunnels.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Francesco Tornabene, Matteo Viscoti, Rossana Dimitri
Summary: This manuscript investigates the dynamic properties of doubly-curved shell structures laminated with innovative materials using the Generalized Differential Quadrature (GDQ) method. The displacement field variable follows the Equivalent Single Layer (ESL) approach, and the geometrical description of the structures is distorted by generalized isogeometric blending functions. Through non-uniform discrete computational grid, the fundamental equations derived from the Hamiltonian principle are solved in strong form. Parametric investigations show the influence of material property variation on the modal response of the structures.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Duy-Khuong Ly, Ho-Nam Vu, Chanachai Thongchom, Nguyen-Thoi Trung
Summary: This paper presents a novel numerical approach for nonlinear analysis and smart damping control in laminated functionally graded carbon nanotube reinforced magneto-electro-elastic (FG-CNTMEE) plate structures, taking into account multiple physical fields. The approach employs a multi-physical coupling isogeometric formulation to accurately capture the nonlinear strain-displacement relationship and the magneto-electro-elastic coupling properties. The smart constrained layer damping treatment is applied to achieve nonlinear damped responses. The formulation is transformed into the Laplace domain and converted back to the time domain through inverse techniques for smart control using viscoelastic materials.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Xiaoyang Xu, Jie Cheng, Sai Peng, Peng Yu
Summary: In this study, a smoothed particle hydrodynamics (SPH) method is developed to simulate viscoelastic fluid flows governed by the Phan-Thien-Tanner (PTT) constitutive equation. The method is validated by comparing its solutions with those obtained by the finite volume method (FVM). The method is also used to simulate the impact behavior and dynamics of a viscoelastic droplet, and the influences of various parameters are investigated. The results demonstrate the accuracy and capability of the SPH method in describing the rheological properties and surface variation characteristics of viscoelastic fluid flows.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Xueying Zhang, Yangjiong Wu
Summary: This paper proposes a high resolution strategy for the localized method of approximate particular solutions (LMAPS). The strategy aims to improve the accuracy and stability of numerical calculation by selecting upwind interpolation templates. Numerical results demonstrate that the proposed high-resolution LMAPS is effective and accurate, especially for solving the Navier-Stokes equations with high Reynolds number.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Yong-Tong Zheng, Yijun Liu, Xiao-Wei Gao, Yang Yang, Hai-Feng Peng
Summary: Structures with holes are common in engineering applications. Analyzing stress concentration effects caused by holes using FEM or BEM is challenging and time-consuming. This paper proposes improved methods for simulating holes and cylinders, reducing the number of nodes while maintaining stress accuracy. Numerical examples demonstrate the accuracy and efficiency of the proposed methods.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Chein-Shan Liu, Chung-Lun Kuo
Summary: The paper presents two new families of fundamental solutions for the 3D Laplace equation and proposes the methods of pseudo fundamental solutions and anisotropic fundamental solutions, which outperform the traditional 3D MFS.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Sima Shabani, Miroslaw Majkut, Slawomir Dykas, Krystian Smolka, Esmail Lakzian
Summary: This study validates and simulates steam condensing flows using different condensation models and equations of state, identifying the most suitable model. The results highlight the importance of choosing the appropriate numerical model for accurately predicting steam condensation flows.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
D. L. Guo, H. H. Zhang, X. L. Ji, S. Y. Han
Summary: In this study, the mechanical behaviors of 2-D orthotropic composites with arbitrary holes were investigated using the numerical manifold method (NMM). The proposed method was verified and found to have good convergence and accuracy. Additionally, the effects of material principal direction and hole configurations on the mechanical behaviors of the orthotropic composites were revealed.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Giacomo Rosilho de Souza, Rolf Krause, Simone Pezzuto
Summary: In this paper, we propose a boundary element method for accurately solving the cell-by-cell bidomain model of electrophysiology. The method removes the degeneracy in the system and reduces the number of degrees of freedom. Numerical experiments demonstrate the exponential convergence of our scheme in space and several biologically relevant experiments are provided.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Riku Toshimitsu, Hiroshi Isakari
Summary: This study extends a recent paper by Lai et al. (2018) by introducing a novel boundary integral formulation for scalar wave scattering analysis in two-dimensional layered and half-spaces. The modified integral formulation eliminates fictitious eigenvalues and reasonable parameter settings ensure efficient and accurate numerical solutions. The proposed method is demonstrated to be effective through numerical examples.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Ebutalib Celik, Merve Gurbuz-Caldag
Summary: In this paper, a new meshless method based on domain decomposition for an L-shaped domain is proposed, which uses RBF-FD formulation at interface points and classical FD in sub-regions to improve the solution accuracy. The proposed numerical method is applied to simulate benchmark results for a divided-lid driven cavity and solve Navier-Stokes equations with Lorentz force term in a single-lid L-shaped cavity exposed to inclined magnetic field, and the flow structure is analyzed in terms of streamline topology under different magnetic field rotations and strengths.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
Article
Engineering, Multidisciplinary
Hanqing Liu, Fajie Wang, Lin Qiu, Cheng Chi
Summary: This paper presents a novel method that combines the singular boundary method with the Loop subdivision surfaces for acoustic simulation of complex structures, overcoming technical challenges in handling boundary nodes.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2024)
