Numerical Simulation of Shock Wave Propagation on Compressible Open-cell Aluminum Foams

被引：0
|
作者：
Wang, Zhi-Hua [1 ,2 ]
Zhang, Yi-Fen [2 ]
Song, Wei-Dong [1 ,2 ]
Zhao, Long-Mao [2 ]
机构：
[1] Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China
[2] Taiyuan Univ Technol, Inst Appl Mech & Biomed Engn, Taiyuan 030024, Peoples R China
来源：
INTERNATIONAL JOURNAL OF NONLINEAR SCIENCES AND NUMERICAL SIMULATION | 2010年 / 11卷
基金：
中国国家自然科学基金;
关键词：
open-cell aluminum foam; impulsive loading; shock wave propagation; stress enhancement; IMPACT; TRANSMISSION;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A 2D nonlinear mass-spring-bar model was developed to study the characteristics of shock wave propagation on open-cell aluminum foams. Based on the uniaxial stress-strain relationship of aluminum foams, the loading and unloading criteria were implemented in 2D nonlinear model. The nonlinear kinematic equilibrium equations were derived and the stress wave propagation characteristics were modeled numerically using the explicit integration algorithm. Results showed that stress enhancement, which strongly depended on both the material properties of metallic foams and amplitude and duration of the pulse, may take place on metallic foams when the intensive loading was applied. The study provided valuable insight into the reliability of metallic foams used as protective structure.
引用
收藏
页码：253 / 257
页数：5
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