A dynamic large-deformation particle finite element method for geotechnical applications based on Abaqus
作者机构：College of Mechanics and MaterialsHohai UniversityNanjing210098China Hunan Provincial Communications PlanningSurvey and Design Institute CoLtdChangsha410200China College of Water Conservancy and Civil EngineeringSouth China Agricultural UniversityGuangzhou510642China School of Civil EngineeringSun Yat-Sen UniversityGuangzhou510275China Institute of Mountain Hazards and Environment IMHEChinese Academy of SciencesChengdu610041China College of Water Conservancy and HydropowerHohai UniversityNanjing210098China
出 版 物：《Journal of Rock Mechanics and Geotechnical Engineering》 (岩石力学与岩土工程学报（英文版）)
年 卷 期：2023年第15卷第7期
页 面：1859-1871页
核心收录：
学科分类：08[工学] 081401[工学-岩土工程] 0818[工学-地质资源与地质工程] 0814[工学-土木工程]
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).
主 题：Abaqus Collapse of granular materials Dynamics Large deformation Particle finite element method(PFEM) Rigid strip footing
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.
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