Elasto-plastic constitutive model of aluminum alloy foam subjected to impact loading

作     者：王志华 敬霖 赵隆茂 WANG Zhi-hua;JING Lin;ZHAO Long-mao

作者机构：太原理工大学应用力学与生物医学工程研究所山西太原030024 

基　　金：Projects (90716005, 10802055, 10972153) supported by the National Natural Science Foundation of China Project (2007021005) supported by the Natural Science Foundation of Shanxi Province, China Project supported by the Postdoctoral Science Foundation of China Project supported by the Homecomings Foundation, China Project supported by the Top Young Academic Leaders of Higher Learning Institutions of Shanxi, China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2011年第21卷第3期

页      码：449-454页

摘      要：A multi-parameter nonlinear elasto-plastic constitutive model which can fully capture the three typical features of stress-strain response, linearity, plasticity-like stress plateau and densification phases was developed. The functional expression of each parameter was determined using uniaxial compression tests for aluminum alloy foams. The parameters of the model can be systematically varied to describe the effect of relative density which may be responsible for the changes in yield stress and hardening-like or softening-like behavior at various strain rates. A comparison between model predictions and experimental results of the aluminum alloy foams was provided to validate the model. It was proved to be useful in the selection of the optimal-density and energy absorption foam for a specific application at impact events.

主 题 词：elasto-plastic constitutive model metallic foam strain rate effect energy absorption 

学科分类：08[工学] 080502[080502] 0805[工学-能源动力学] 

核心收录：

D　O　I：10.1016/S1003-6326(11)60735-8

馆 藏 号：203872445...