GPU-accelerated vector-form particle-element method for 3D elastoplastic contact of structures  

作　　者：Wei WANG Yanfeng ZHENG Jingzhe TANG Chao YANG Yaozhi LUO 

机构地区：[1]College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China [2]Center for Balance Architecture,Zhejiang University,Hangzhou 310028,China [3]Architectural Design and Research Institute ofZhejiang University Co,Ltd,Hangzhou 30028,China [4]Key Laboratory of Space Structures of Zhejiang Province,Hangzhou 310058,China

出　　处：《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2023年第12期1120-1130,共11页浙江大学学报（英文版）A辑（应用物理与工程）

基　　金：supported by the National Natural Science Foundation of China(Nos.51908492,52008366,and 52238001);the Zhejiang Provincial Natural Science Foundation of China(Nos.LY21E080022 and LQ21E080019).

摘　　要：A graphics processing unit(GPU)-accelerated vector-form particle-element method,i.e.,the finite particle method(FPM),is proposed for 3D elastoplastic contact of structures involving strong nonlinearities and computationally expensive contact calculations.A hexahedral FPM element with reduced integration and anti-hourglass is developed to model structural elastoplastic behaviors.The 3D space containing contact surfaces is decomposed into cubic cells and the contact search is performed between adjacent cells to improve search efficiency.A connected list data structure is used for storing contact particles to facilitate the parallel contact search procedure.The contact constraints are enforced by explicitly applying normal and tangential contact forces to the contact particles.The proposed method is fully accelerated by GPU-based parallel computing.After verification,the performance of the proposed method is compared with the serial finite element code Abaqus/Explicit by testing two large-scale contact examples.The maximum speedup of the proposed method over Abaqus/Explicit is approximately 80 for the overall computation and 340 for contact calculations.Therefore,the proposed method is shown to be effective and efficient.

关 键 词：Graphics processing unit(GPU) Parallel acceleration Elastoplastic contact Contact search Finite particle method(FPM) 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]