Adaptive subdomain integration method for representing complex localized geometry in ANCF  

基于绝对节点坐标方法的复杂局部特征自适应积分方法

作　　者：Gang He Kang Gao Zuqing Yu Jun Jiang Qian Li 何钢;高亢;於祖庆;姜君;李堑

机构地区：[1]College of Mechanical&Electrical Engineering,Hohai University,Changzhou 213022,China

出　　处：《Acta Mechanica Sinica》2022年第3期149-162,I0004,共15页力学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.52175223,and 11802072);the Fundamental Research Funds for the Central Universities(Grant No.B210201038).

摘　　要：In this work,we propose incorporating the finite cell method(FCM)into the absolute nodal coordinate formulation(ANCF)to improve the efficiency and robustness of ANCF elements in simulating structures with complex local features.In addition,an adaptive subdomain integration method based on a triangulation technique is devised to avoid excessive subdivisions,largely reducing the computational cost.Numerical examples demonstrate the effectiveness of the proposed method in large deformation,large rotation and dynamics simulation.论文将有限胞元法与绝对节点坐标法相结合,提出高效稳定的含有复杂局部结构特征的ANCF单元分析方法;并基于三角划分原理设计了自适应子域积分算法,避免了过度的子域细分,大大减少了计算成本.论文用数值实例验证了所提出方法在大变形、大转动的动力学问题分析中的有效性.

关 键 词：Adaptive subdomain integration Finite cell method Triangulation meshing Absolute nodal coordinate formulation Localized geometry 

分 类 号：O313.7[理学—一般力学与力学基础]