1-D STRESS AND 1-D STRAIN BASIC EXPERIMENTS AND RELATIONSHIP BETWEEN EOS AND CONSTITUTIVE EQUATIONS

摘要：

In impact dynamics,1D stress and 1D strain experiments are regarded as basic approaches for investigation into dynamic material behaviors.In this paper,the stress and strain states,loading and unloading paths in these experiments of impact dynamics are analyzed.The nature and correlativity of constitutive models from the two experiments are studied.By means of FEA,the effects of EOS and constitutive models on calculation results of plate impact and Taylor impact are presented.From point of view of structural mechanics,in bars,beams,plates,shells,etc,there exist free interfaces from which the rarefaction waves are excited and which are always kept free.This characteristic result in the low pressure state in these structures.In analysis of dynamic responses of these structures,the elastoplastic constitutive models are important.

关键词： 1-D stress 1-D strain impact dynamics EOS constitutive equations

作者: X.C.Huang Y.Z.Chen J.S.Zhu

作者单位: Institute of Structural Mechanics,China Academy of Engineering Physics,Mianyang,621900,P.R.China Institute of Applied Physics and Computational Mathematics,Beijing

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1438-1442

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）