爆炸与冲击2011，Vol.31Issue(3)：243-249,7.
一种新型SPH-FEM耦合算法及其在冲击动力学问题中的应用
A new coupled SPH-FEM algorithm andits application to impact dynamics
摘要
Abstract
The coupling of smoothed particle hydrodynamics (SPH) with the finite element method (FEM) is presented to make full use of the superiority of SPH in dealing with large deformation and the high accuracy of FEM. The coupled SPH-FEM algorithm employs SPH particles in the highef distortion regions and finite elements in the lower distortion regions. In the coupled interface, SPH particles are attached to finite elements. Background particles are assigned in the position of FE nodes, and FE nodes are added to SPH neighbor list. The boundary effect of SPH is avoided, and the continuity of the interface is guaranteed. The perforation of a cylindrical steel projectile impacting a plate target is simulated in 3D using the coupled SPH-FEM algorithm. The Johnson-Cook material model with damage effect and Grüneisen equation of state are employed for the target, and the computed results show good agreement with the experimental data.关键词
固体力学/SPH-FEM耦合算法/背景粒子/冲击Key words
solid mechanics/ SPH-FEM coupling algorithm/ background particle/ impact分类
数理科学引用本文复制引用
张志春,强洪夫,高巍然..一种新型SPH-FEM耦合算法及其在冲击动力学问题中的应用[J].爆炸与冲击,2011,31(3):243-249,7.基金项目
国家重点基础研究发展计划(973计划)项目(61338) （973计划）
教育部新世纪优秀人才支持计划项目(NCET-4138C2XB) （NCET-4138C2XB）
第二炮兵工程学院创新性探索研究项目(KX2008172) （KX2008172）
