Article
Engineering, Multidisciplinary
S. Ali Faghidian, Krzysztof Kamil Zur, J. N. Reddy
Summary: The proposed higher-order unified gradient elasticity theory effectively characterizes the nanoscopic response of advanced nano-materials, as demonstrated by its application to study the torsional behavior of elastic nano-bars and determine the shear modulus of nano-sized bars in closed-form analytical formula. Additionally, a practical approach to calibrate characteristic lengths is introduced.
INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE
(2022)
Article
Engineering, Civil
M. Neuner, P. Hofer, G. Hofstetter
Summary: This study evaluates the capabilities of classical and higher order damage-plasticity continuum models in predicting complex shear failure of concrete through challenging 3D finite element simulations. The results show great potential of higher order continuum approaches in modeling the structural post-peak response.
ENGINEERING STRUCTURES
(2022)
Article
Construction & Building Technology
Mohamed-Ouejdi Belarbi, Sattar Jedari Salami, Aman Garg, Hicham Hirane, Daikh Ahmed Amine, Mohammed Sid Ahmed Houari
Summary: This paper investigates the static bending and buckling responses of functionally graded carbon nanotubes-reinforced composite beams using a higher shear deformation theory. The proposed theory accurately distributes transverse shear stress and requires no shear correction factor. The analysis includes uniform and different graded distributions of CNTs, and the effective material properties of the beams are estimated through the rule of mixture. An efficient finite element formulation is developed to model the beams realistically. The study provides comprehensive numerical results and new benchmark data, demonstrating the effects of CNTs volume fraction, distribution patterns, boundary conditions, and length-to-thickness ratio on the bending and buckling responses of the beams.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Hilal Koc, Ekrem Tufekci
Summary: This article presents an analysis of the bending behavior of carbon nanotubes (CNTs) based on doublet mechanics (DM) and Euler-Bernoulli beam theory. It investigates the effects of higher-order boundary conditions and coupling on the deflection, which have not been previously studied. The numerical solutions reveal that higher-order boundary conditions have a significant impact on the deflection of cantilever CNTs, unlike simply supported CNTs. Additionally, the paradox of DM showing a stiffening behavior for cantilever CNTs is resolved with the use of higher-order boundary conditions, and the coupling significantly affects the bending behavior of armchair CNTs.
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
(2023)
Article
Mechanics
Mengzhen Li, Renjun Yan, Lin Xu, C. Guedes Soares
Summary: A novel unified framework of higher-order shear deformation theories for laminated and functionally graded plates is developed, aiming to unify existing theories and propose new models. By categorizing existing displacement fields and unifying different types of transverse displacements and shear strains, the study assesses and proposes new plate theories. Application of specific shear strain functions helps determine a new higher-order shear deformation theory that theoretically covers existing models and encourages further exploration of accurate plate theories.
COMPOSITE STRUCTURES
(2021)
Article
Engineering, Mechanical
Fenfei Hua, Dabiao Liu, Yuan Li, Yuming He, D. J. Dunstan
Summary: This study investigates the mechanical properties of thin foils in bending, tension, and constrained layers through experiments and simulations. The passivated layer significantly increases the flow stress of the foil, while the dissipative gradient terms contribute to the increased yield strength and the energetic gradient terms lead to increased strain hardening and an anomalous Bauschinger effect.
INTERNATIONAL JOURNAL OF PLASTICITY
(2021)
Article
Computer Science, Interdisciplinary Applications
Liang Zhang, Tzu-Hsing Ko
Summary: In this study, the static analysis of spinning functionally graded nanotube based on the nonlocal strain gradient theory is presented. Mathematical modeling of the tube structures is done using the high-order beam theory according to the Sinusoidal shear deformation beam theory. The energy conservation principle is employed to generate the equations, and the generalized differential quadratic method is used for solving. The numerical results are discussed in detail to examine the impact of different relevant parameters on the bending and buckling behavior of the rotating nanotube.
COMPUTERS AND CONCRETE
(2022)
Article
Construction & Building Technology
Simmi Guptaa, H. D. Chalak
Summary: In this study, bending and free vibration analyses are conducted on sandwich FGM beams using the recently proposed HOZT. Different material gradation laws and stress distributions across the thickness are examined, revealing the distinct behavior of unsymmetric beams compared to symmetric ones. The findings provide valuable insights for future studies in this field.
STEEL AND COMPOSITE STRUCTURES
(2022)
Article
Materials Science, Multidisciplinary
Xiangyang Wang, Huibo Qi, Xueye Chen, Zhongyu Sun, Huawei Zhou, Junying Bi, Lifen Hu
Summary: This paper applies the DCM method to predict the buckling of inner tubes of DWNTs, showing that the lengths and radii of outer tubes influence the buckling patterns of inner tubes. The inner tubes of DWNTs with an interlayer spacing of 0.2034 nm have the strongest buckling resistance, and the local critical axial compression ratio of inner tubes increases with the lengths of inner and outer tubes when the interlayer spacing of DWNTs is less than 0.34 nm.
MECHANICS OF MATERIALS
(2022)
Article
Mathematics, Applied
Maysam Naghinejad, Hamid Reza Ovesy
Summary: The viscoelastic buckling and nonlinear post-buckling behavior of nano-scaled beams were analyzed using the nonlocal integral elasticity theory. The study developed a finite element method and considered buckling related terms and viscoelastic effects. The results were compared with literature and the effects of nonlocal parameter, viscoelastic parameter, axial compressive load, and boundary conditions on the buckling and post-buckling behavior were investigated.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2022)
Article
Computer Science, Interdisciplinary Applications
Soomin Choi, Yoon Young Kim
Summary: This study introduces a new higher-order beam bending theory to capture the complex responses of thin-walled beams by including bending-related sectional modes and providing explicit stress-generalized force relations. The method establishes a recursive analysis to derive hierarchical bending-related sectional modes, showing certain critical relations among the sectional mode shapes. Verification of the theory's validity is done through calculations of static, free vibration, and buckling responses of several thin-walled rectangular hollow section beams.
COMPUTERS & STRUCTURES
(2021)
Article
Multidisciplinary Sciences
Huaqing Huang, Feng Liu
Summary: This study proposes a method to induce higher-order topological phases through structural buckling, enriching our understanding of higher-order topology and opening a new route to discovering HOTI materials.
NATIONAL SCIENCE REVIEW
(2022)
Article
Engineering, Electrical & Electronic
Mohammad Hosseini, Nahid Bemanadi, Mohammadreza Mofidi
Summary: This paper presents the free vibration analysis of a double viscoelastic nano-composite plate system reinforced by functionally graded single-walled carbon nanotubes (FG-SWCNT) embedded in a visco-Pasternak medium based on modified strain gradient theory (MSGT) and third-order shear deformation theory (TSDT). The effects of various parameters on the natural frequencies of the plate system are investigated, including material length scale parameter, aspect ratio, stiffness and damping coefficients of visco-Pasternak foundation, structural damping coefficient, volume fraction, and different distributions of CNTs.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2023)
Article
Mechanics
Hojat Tanzadeh, Hossein Amoushahi
Summary: In this paper, a semi-analytical higher-order finite strip method is developed based on the nonlocal strain gradient theory for buckling analysis of orthotropic nanoplates. The effects of different factors such as boundary conditions, nonlocal and strain gradient parameters, aspect ratio, and different types of in-plane loading are studied. The proposed formulation is validated through numerical analysis.
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS
(2022)
Article
Computer Science, Interdisciplinary Applications
Subrat Kumar Jena, S. Chakraverty, Mohammad Malikan
Summary: This study focuses on the buckling behavior of strain gradient nonlocal beams on Winkler elastic foundations. By combining the first-order strain gradient model with the Euler-Bernoulli beam theory using Hamilton's principle, the study employs three numerical methods (HWM, HOHWM, and DQM) to analyze buckling characteristics and study the impact of various parameters on critical buckling loads. A comprehensive presentation of the numerical methods and a comparative study on their convergence demonstrate the effectiveness and applicability of the methods in analyzing the buckling behavior. The findings of this investigation are properly validated with previous works.
ENGINEERING WITH COMPUTERS
(2021)
Article
Engineering, Multidisciplinary
B. B. Yin, W. K. Sun, Yang Zhang, K. M. Liew
Summary: This study proposes a novel meshfree framework based on bond-based peridynamics (PD) using finite deformation theory to model the large deformation and progressive fracture of hyperelastic materials. The framework introduces an original bond strain and a numerical damping parameter to improve the solution accuracy and stability of explicit time integration. It outperforms grid-based methods in capturing complex crack features and has been successfully validated in various examples. The framework has wide compatibility with hyperelastic models and has potential applications in elastomer-hydrogel composites and soft tissues modeling.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Ecology
Yalong Wang, Chaoying Li, Haidong Liu, Jin Lin, Shouxiang Lu, Kim Meow Liew
Summary: The electric fault arc, especially the series arc, causes numerous electrical fires. Previous studies have limitations in focusing on gaseous atmospheres instead of solid materials, which is not in line with the actual demand, and in restricting the studied external heat sources to cone heaters and flames, neglecting the electric arc. To overcome these limitations, an experimental platform was developed to investigate flame behavior during the ignition of cable insulation material by the fault arc. A flame-extracting and noise-reduction algorithm was proposed to process the high-speed camera's large number of photos. The main findings include the significant role of the appropriate size of the structuring element in filtering the flame region, the increase in mean flame area with system load growth, and the more prominent flame size and frequency in specific locations with increased system load. The in-depth understanding of flame behavior provided by this work will contribute to optimizing electric system design and disaster prevention.
Article
Chemistry, Physical
Gen Li, Arslan Akbar, Lu-Wen Zhang, F. Rosei, K. M. Liew
Summary: Solid substrates of cementitious composites in high salinity and humidity environments are covered by fluid water, which affects the wetting behavior of cement hydrates and chloride ingress phenomena. This study investigates the nanoscale wetting behaviors of calcium silicate hydrate (C-S-H) and proposes a surface modification strategy using fluoroalkylsilane (FAS) to control hydrophobicity. Molecular dynamic simulation reveals that FAS creates superhydrophobic surfaces, eliminating calcium leaching by hindering ionic interactions and blocking chloride adsorption and invasion.
APPLIED SURFACE SCIENCE
(2023)
Article
Mechanics
B. B. Yin, Arslan Akbar, Yang Zhang, K. M. Liew
Summary: This study presents a coupled phase-field cohesive modeling framework that can accurately capture the progressive failure and damage behaviors of multiphasic microstructures and multifiber systems. The framework includes novel aspects such as a newly developed scalar indicator, periodic boundary conditions, and characterization of various failure modes. Parametric studies show consistent results with experiments and reveal the effects of fiber distributions, fiber volume fractions, and boundary conditions on the mechanical behaviors of fiber-reinforced composites. The results demonstrate the potential of the framework in evaluating the mechanical performances of composite materials in engineering applications.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
D. A. Abdoh, Yang Zhang, A. S. Ademiloye, V. K. R. Kodur, K. M. Liew
Summary: In order to predict the heating and cooling behaviors of laminated glass facades exposed to fire, a precise and efficient computer model is developed. An efficient three-dimensional finite difference method (3DFDM) is proposed to reduce the computational requirements associated with simulating heat transfer in layered structures with a down-flowing water film. A unique computational algorithm for particle labeling is developed to capture the moving particles of the water film, which significantly reduces the computational effort.
COMPOSITE STRUCTURES
(2023)
Article
Construction & Building Technology
Gen Li, Arslan Akbar, Lu-Wen Zhang, Federico Rosei, K. M. Liew
Summary: This article focuses on an original molecular pathway to predict the durability and analyze the environmental impact of fluoroalkyl-silane (FS) based additive modified cementitious composites in marine environment. By revealing the calcium leaching behaviors of cement composites through molecular simulation, the study evaluates the porosity and chloride diffusion coefficient to determine their lifespan. The results show that FS surface modification can eliminate decalcification, decrease porosity, and slow down chloride accumulation. The optimal mixing content of 0.762 wt % FS significantly reduces repair frequencies and diminishes CO2 emissions and non-renewable energy consumption by 52.33% and 31.07% respectively. This research provides atomic understanding for improving the durability of cement composites and proposes strategies to predict their service life and environmental impact.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Wei-Kang Sun, B. B. Yin, Lu-Wen Zhang, K. M. Liew
Summary: To develop better diagnosis and treatment techniques for cardiovascular diseases, such as aneurysms, it is urgent to have a deeper understanding of the biomechanical mechanisms and failure behaviors of blood vessels. This study proposes a novel virtual bar model for surrounding tissues and correlates the residual stress and loads from the surrounding tissues with the perivascular pressures of the blood vessels. Additionally, a meshfree framework is developed to model the deformation and rupture of blood vessels using the Fung-type hyperelasticity and the Casson's non-Newtonian fluid model. The study successfully captures the blood pressure-induced spontaneous ruptures of blood vessels.
JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
(2023)
Article
Chemistry, Physical
Xiongfei Gao, Lu-Wen Zhang, K. M. Liew
Summary: This study reveals the electric double layer (EDL) structure at the interface between gallium-based liquid metal (GBLM) electrode and aqueous electrolyte for the first time, using density functional theory (DFT) calculation and ab initio molecular dynamics (AIMD) simulation. The EDL structure originates from the specific adsorption of gallates on GBLM, forming an inner Helmholtz layer (IHL) and attracting a diffusion layer with opposite charges. The excess negative charge on GBLM surface interferes with the adsorbed gallates and amplifies the interface potential change across EDL. The proposed EDL structure contributes to a deeper understanding of the electrochemical processes occurring at the electrode-electrolyte interface in GBLM aqueous batteries.
APPLIED SURFACE SCIENCE
(2023)
Article
Mechanics
A. O. Sojobi, K. M. Liew
Summary: High performance column composites are multifunctional composites designed to improve resilience of structures and infrastructures. They have been found attractive in earthquake-prone regions for their superior mechanical performance.
COMPOSITE STRUCTURES
(2023)
Article
Mechanics
Z. X. Lei, Junwei Ma, W. K. Sun, B. B. Yin, K. M. Liew
Summary: Composite structures can experience significant residual strength reduction due to invisible damage caused by impacts, which can result in severe harm without warning. Incorporating fibers, such as carbon and glass fibers, into composite laminates can enhance their impact resistance and compressive strength. This study investigated the dynamic response and residual strength of laminates reinforced with twill woven carbon fiber, glass fiber, and carbon/glass fiber hybrid under low-velocity impact and compression-after-impact testing. The results showed that adding glass fibers altered the impact damage mode and improved the laminates' impact resistance and compressive strength. The study also characterized the damage morphologies and failure mechanisms of the laminates, providing valuable insights for their structural design and performance improvement.
COMPOSITE STRUCTURES
(2023)
Article
Engineering, Manufacturing
G. Li, B. B. Yin, L. W. Zhang, K. M. Liew
Summary: Fibers effectively prevent the structural deterioration of cementitious composites under repeated loadings. The interface between fiber and hydraulic cement matrix has mysterious fatigue behavior. This work demonstrates by atomic modelling that fiber, pore water, and calcium silicate hydrate (C-S-H) create a dynamically balanced system, keeping the stability of cement matrix under cyclic loading.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Multidisciplinary
B. B. Yin, W. K. Sun, Yang Zhang, K. M. Liew
Summary: Polymer gels can be effectively simulated using a three-dimensional meshfree framework based on bond-based peridynamics, which enables dynamic simulations with complex geometric configurations. The proposed method exhibits superior performance in modeling blunt impacts on polymer gels compared to finite element counterparts, and can be easily extended to penetration impact problems.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Engineering, Multidisciplinary
Jiasheng Huang, Lu-Wen Zhang, K. M. Liew
Summary: This work proposes a novel hybrid polymer-water model within the peridynamics (PD) framework to accurately clarify the complex damage process of soft materials subject to ballistic penetration. The superior effectiveness and applicability of the proposed model are demonstrated through compression, shear, and fracture tests. The proposed model offers a reasonable and practical representation of soft material from the perspective of a particle-based approach and enhances the potential applications of PD framework for simulating the large deformation and dynamic response of soft materials.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Weiwei Zhang, Hao Yu, Binbin Yin, Arslan Akbar, K. M. Liew
Summary: This review explores the recycling of end-of-life wind turbine blades (EoL-WTBs) and their potential applications in civil engineering. Mechanical, thermal, and chemical recycling methods are examined, highlighting the hierarchical valorization of EoL-WTBs recyclates in construction. However, challenges such as technical complexity, cost, market demand, and regulatory frameworks hinder widespread adoption. Standardization, efficient transportation systems, well-structured recycling supply chains, and economic feasibility analysis are recommended to address these issues.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Engineering, Multidisciplinary
W. K. Sun, B. B. Yin, Arslan Akbar, V. K. R. Kodur, K. M. Liew
Summary: This paper proposes a variable timestep-strategy to accelerate the peridynamic modeling of thermomechanical cracking, and demonstrates its advantages in various aspects.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Akshay J. Thomas, Mateusz Jaszczuk, Eduardo Barocio, Gourab Ghosh, Ilias Bilionis, R. Byron Pipes
Summary: We propose a physics-guided transfer learning approach to predict the thermal conductivity of additively manufactured short-fiber reinforced polymers using micro-structural characteristics obtained from tensile tests. A Bayesian framework is developed to transfer the thermal conductivity properties across different extrusion deposition additive manufacturing systems. The experimental results demonstrate the effectiveness and reliability of our method in accounting for epistemic and aleatory uncertainties.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Zhen Zhang, Zongren Zou, Ellen Kuhl, George Em Karniadakis
Summary: In this study, deep learning and artificial intelligence were used to discover a mathematical model for the progression of Alzheimer's disease. By analyzing longitudinal tau positron emission tomography data, a reaction-diffusion type partial differential equation for tau protein misfolding and spreading was discovered. The results showed different misfolding models for Alzheimer's and healthy control groups, indicating faster misfolding in Alzheimer's group. The study provides a foundation for early diagnosis and treatment of Alzheimer's disease and other misfolding-protein based neurodegenerative disorders using image-based technologies.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Jonghyuk Baek, Jiun-Shyan Chen
Summary: This paper introduces an improved neural network-enhanced reproducing kernel particle method for modeling the localization of brittle fractures. By adding a neural network approximation to the background reproducing kernel approximation, the method allows for the automatic location and insertion of discontinuities in the function space, enhancing the modeling effectiveness. The proposed method uses an energy-based loss function for optimization and regularizes the approximation results through constraints on the spatial gradient of the parametric coordinates, ensuring convergence.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Bodhinanda Chandra, Ryota Hashimoto, Shinnosuke Matsumi, Ken Kamrin, Kenichi Soga
Summary: This paper proposes new and robust stabilization strategies for accurately modeling incompressible fluid flow problems in the material point method (MPM). The proposed approach adopts a monolithic displacement-pressure formulation and integrates two stabilization strategies to ensure stability. The effectiveness of the proposed method is validated through benchmark cases and real-world scenarios involving violent free-surface fluid motion.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Chao Peng, Alessandro Tasora, Dario Fusai, Dario Mangoni
Summary: This article discusses the importance of the tangent stiffness matrix of constraints in multibody systems and provides a general formulation based on quaternion parametrization. The article also presents the analytical expression of the tangent stiffness matrix derived through linearization. Examples demonstrate the positive effect of this additional stiffness term on static and eigenvalue analyses.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Thibaut Vadcard, Fabrice Thouverez, Alain Batailly
Summary: This contribution presents a methodology for detecting isolated branches of periodic solutions to nonlinear mechanical equations. The method combines harmonic balance method-based solving procedure with the Melnikov energy principle. It is able to predict the location of isolated branches of solutions near families of autonomous periodic solutions. The relevance and accuracy of this methodology are demonstrated through academic and industrial applications.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Weisheng Zhang, Yue Wang, Sung-Kie Youn, Xu Guo
Summary: This study proposes a sketch-guided topology optimization approach based on machine learning, which incorporates computer sketches as constraint functions to improve the efficiency of computer-aided structural design models and meet the design intention and requirements of designers.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Leilei Chen, Zhongwang Wang, Haojie Lian, Yujing Ma, Zhuxuan Meng, Pei Li, Chensen Ding, Stephane P. A. Bordas
Summary: This paper presents a model order reduction method for electromagnetic boundary element analysis and extends it to computer-aided design integrated shape optimization of multi-frequency electromagnetic scattering problems. The proposed method utilizes a series expansion technique and the second-order Arnoldi procedure to reduce the order of original systems. It also employs the isogeometric boundary element method to ensure geometric exactness and avoid re-meshing during shape optimization. The Grey Wolf Optimization-Artificial Neural Network is used as a surrogate model for shape optimization, with radar cross section as the objective function.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
C. Pilloton, P. N. Sun, X. Zhang, A. Colagrossi
Summary: This paper investigates the smoothed particle hydrodynamics (SPH) simulations of violent sloshing flows and discusses the impact of volume conservation errors on the simulation results. Different techniques are used to directly measure the particles' volumes and stabilization terms are introduced to control the errors. Experimental comparisons demonstrate the effectiveness of the numerical techniques.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Ye Lu, Weidong Zhu
Summary: This work presents a novel global digital image correlation (DIC) method based on a convolution finite element (C-FE) approximation. The C-FE based DIC provides highly smooth and accurate displacement and strain results with the same element size as the usual finite element (FE) based DIC. The proposed method's formulation and implementation, as well as the controlling parameters, have been discussed in detail. The C-FE method outperformed the FE method in all tested examples, demonstrating its potential for highly smooth, accurate, and robust DIC analysis.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Mojtaba Ghasemi, Mohsen Zare, Amir Zahedi, Pavel Trojovsky, Laith Abualigah, Eva Trojovska
Summary: This paper introduces Lung performance-based optimization (LPO), a novel algorithm that draws inspiration from the efficient oxygen exchange in the lungs. Through experiments and comparisons with contemporary algorithms, LPO demonstrates its effectiveness in solving complex optimization problems and shows potential for a wide range of applications.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Jingyu Hu, Yang Liu, Huixin Huang, Shutian Liu
Summary: In this study, a new topology optimization method is proposed for structures with embedded components, considering the tension/compression asymmetric interface stress constraint. The method optimizes the topology of the host structure and the layout of embedded components simultaneously, and a new interpolation model is developed to determine interface layers between the host structure and embedded components.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Qiang Liu, Wei Zhu, Xiyu Jia, Feng Ma, Jun Wen, Yixiong Wu, Kuangqi Chen, Zhenhai Zhang, Shuang Wang
Summary: In this study, a multiscale and nonlinear turbulence characteristic extraction model using a graph neural network was designed. This model can directly compute turbulence data without resorting to simplified formulas. Experimental results demonstrate that the model has high computational performance in turbulence calculation.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Jacinto Ulloa, Geert Degrande, Jose E. Andrade, Stijn Francois
Summary: This paper presents a multi-temporal formulation for simulating elastoplastic solids under cyclic loading. The proper generalized decomposition (PGD) is leveraged to decompose the displacements into multiple time scales, separating the spatial and intra-cyclic dependence from the inter-cyclic variation, thereby reducing computational burden.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
Article
Engineering, Multidisciplinary
Utkarsh Utkarsh, Valentin Churavy, Yingbo Ma, Tim Besard, Prakitr Srisuma, Tim Gymnich, Adam R. Gerlach, Alan Edelman, George Barbastathis, Richard D. Braatz, Christopher Rackauckas
Summary: This article presents a high-performance vendor-agnostic method for massively parallel solving of ordinary and stochastic differential equations on GPUs. The method integrates with a popular differential equation solver library and achieves state-of-the-art performance compared to hand-optimized kernels.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2024)
