对泡沫金属材料的连续本构模型与可压缩性塑性力学进行了评述,并介绍了根据J2流动理论得到的可压缩塑性力学的本构关系,以及该本构关系在求解泡沫金属材料平面应力裂纹缓慢扩展问题中的应用,并将所得结果与一般幂硬化材料中的相应结果进行了比较,从而在一定程度上揭示了可压缩塑性力学与经典塑性力学之间的关系.
The continuous constitutive models and compressible plastic mechanics in metal cellular materials is reviewed. On the basis of J2 flow theory a constitutive relation of compressible plastic mechanics is obtained. This constitutive relation is used for plane stress mode-I crack growth in the nonlinear crack problems of metallic cellular materials, and the obtained result is compared with the corresponding result of a power-law hardening material 20240T3 aluminum.
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