A multiscale material point method for impact simulation

作     者：Zhen Chen Yilong Han Shan Jiang Yong Gan Thomas D. Sewell 

作者机构：Department of Civil and Environmental Engineering University of Missouri Columbia 65211 USA Department of Engineering Mechanics Dalian University of Technology Dalian 116023 China Department of Engineering Mechanics Zhejiang University Hangzhou 310027 China Department of Chemistry University of Missouri Columbia MO 65211 USA 

出 版 物：《Theoretical & Applied Mechanics Letters》 (力学快报（英文版）)

年 卷 期：2012年第2卷第5期

页      面：10-13页

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0707[理学-海洋科学] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0824[工学-船舶与海洋工程] 0802[工学-机械工程] 0836[工学-生物工程] 0814[工学-土木工程] 0825[工学-航空宇航科学与技术] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported in part by the U.S.Defense Threat Reduction Agency(HDTRA1-10-1-0022) the National Basic Research Program of China(2010CB832704) the National Natural Science Foundation of China(10721062) the 111 Joint Program by the Chinese Ministry of Education State Administration of Foreign Experts Affairs(B08014) 

主　　题：material point method multiscale simulation impact response 

摘      要：To better simulate multi-phase interactions involving failure evolution, the material point method （MPM） has evolved for almost twenty years. Recently, a particle-based multiscale simulation procedure is being developed, within the framework of the MPM, to describe the detonation process of energetic nano-composites from molecular to continuum level so that a multiscale equation of state could be formulated. In this letter, a multiscale MPM is proposed via both hierarchical and concurrent schemes to simulate the impact response between two microrods with different nanostructures. Preliminary results are presented to illustrate that a transition region is not required between different spatial scales with the proposed approach.