A dynamic large-deformation particle finite element method for geotechnical applications based on Abaqus  

作　　者：Weihai Yuan Jinxin Zhu Neng Wang Wei Zhang Beibing Dai Yuanjun Jiang Yuan Wang 

机构地区：[1]College of Mechanics and Materials,Hohai University,Nanjing,210098,China [2]Hunan Provincial Communications Planning,Survey and Design Institute Co,Ltd,Changsha,410200,China [3]College of Water Conservancy and Civil Engineering,South China Agricultural University,Guangzhou,510642,China [4]School of Civil Engineering,Sun Yat-Sen University,Guangzhou,510275,China [5]Institute of Mountain Hazards and Environment IMHE,Chinese Academy of Sciences,Chengdu,610041,China [6]College of Water Conservancy and Hydropower,Hohai University,Nanjing,210098,China

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2023年第7期1859-1871,共13页岩石力学与岩土工程学报（英文版）

基　　金：the National Natural Science Foundation of China(Grant No.41807223);the Fundamental Research Funds for the Central Universities(Grant No.B210202096);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDA 23090202).

摘　　要：In this paper,the application of Abaqus-based particle finite element method(PFEM)is extended from static to dynamic large deformation.The PFEM is based on periodic mesh regeneration with Delaunay triangulation to avoid mesh distortion.Additional mesh smoothing and boundary node smoothing techniques are incorporated to improve the mesh quality and solution accuracy.The field variables are mapped from the old to the new mesh using the closest point projection method to minimize the mapping error.The procedures of the proposed Abaqus-based dynamic PFEM(Abaqus-DPFEM)analysis and its implementation in Abaqus are detailed.The accuracy and robustness of the proposed approach are examined via four illustrative numerical examples.The numerical results show a satisfactory agreement with published results and further confirm the applicability of the Abaqus-DPFEM to solving dynamic large-deformation problems in geotechnical engineering.

关 键 词：ABAQUS Collapse of granular materials DYNAMICS Large deformation Particle finite element method(PFEM) Rigid strip footing 

分 类 号：TU41[建筑科学—岩土工程]