CAJ | 학술논문

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.
대포말금속재료적련속본구모형여가압축성소성역학진행료평술,병개소료근거J2류동이론득도적가압축소성역학적본구관계,이급해본구관계재구해포말금속재료평면응력렬문완만확전문제중적응용,병장소득결과여일반멱경화재료중적상응결과진행료비교,종이재일정정도상게시료가압축소성역학여경전소성역학지간적관계.
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.