文档介绍：2008 年 10 月强度与环境
第 35 卷第 5 期 STRUCTURE & ENVIRONMENT ENGINEERING ,
冲击载荷作用下泡沫铝材料模型的参数研究
朱江辉 1 王志华 2 王富生 1 王安强 1 岳珠峰 1
(1 西北工业大学工程力学系西安 710072;2 太原理工大学应用力学所太原 030024)
摘要:通过霍布金森杆冲击试验,研究将修改后的 Liu 与 Subhash 关于聚合物泡沫的本构模型应用
于泡沫铝材料的可行性,对不同相对密度下的材料模型参数进行拟合,并研究参数变化对应力应变
关系的影响。结果显示:该本构模型可以应用于泡沫铝材料模型的研究;材料相对密度和模型参数
变化对应力应变关系影响比较大;拟合曲线和试验曲线基本吻合,拟合得到的参数值对工程具有一
定的参考价值。
关键词:泡沫铝;聚合物泡沫;本构模型;材料参数;冲击载荷
中图分类号:O347 文献标识码:A 文章编号:1006-3919(2008)05-0043-06
Parameter study on material model of aluminium foams
under impact load
ZHU Jiang-hui1 WANG Zhi-hua2 WANG Fu-sheng1 WANG An-qiang1 YUE Zhu-feng1
(1 Mechanics of Engineering , Northwestern Polytechnical University, Xi’an 710072, China;
2 Institute of applied mechanics, Tai Yuan University of technology, Tai Yuan 030024, China)
Abstract: By Hopkinson bar impact test, the feasibility study on application of constitutive model about
polymeric foams proposed by Liu and Subhash are modified to Aluminum Foams is presented. The
parameter values of this model for different relative densities are fit. In addition, the influence of parameter
variety on stress and strain relationship is studied. It is showed that this constitutive model can be applied
to material model study of aluminum foams; the variety influence of relative density and model parameter
on stress and strain relation