摘要
利用多压阻传感器拉氏实验分析方法对受冲击90w钨合金材料中形成的应力波场进行了测试,并利用拉格朗日分析方法获得的结果建立了合金的不合损伤的本构关系.然后以动态层裂试验获得的层裂参数曲线和数据为依据,提出了一种考虑材料内部损伤成核,成长及汇合效应的唯象本构模型,并通过对层裂实验曲线进行数值模拟,确定了该合金的含损伤本构的参数.
In this paper a dynamic constitutive relationship without the damage term was determined experimentally with help of the Lagrangian analysis technique. On the basis of the results of one-dimentional plane spalling experiments a phenomenological constitutive model considering the effects of the nucleation, growth and the coalesce of damages on the dynamic fracture behaviour was purposed. The simulational testing to the spalling experi -ments shows a relatively satisfactory agreement.
出处
《宁波大学学报（理工版）》
CAS
2003年第4期466-474,共9页
Journal of Ningbo University：Natural Science and Engineering Edition
基金
Project supported by the National Natural Science Foundation of China(No.10172075)
Natural Science Foundation for Young Scientist(No.02J20102-13)
