Dimple fracture simulation system under mixed mode loading condition.

用Gurson本构方程研究了延性断裂过程，该方程考虑了孔洞的形核、长大和合并。开发了能够评估厚度效应和混合加载条件影响的有限元分析系统。对韧性断裂过程的机理进行了基础性研究。并将该系统应用于核电站结构多裂纹相互作用效应的评估。结果表明，使用该系统进行保守评价是可能的。研究结果发表在国际和国内期刊上。该系统已在多个科研院所共享，以备将来使用。

Ductile fracture process is studied using Gurson's constitutive equation which considers nucleation, growth and coalescence of voids. Finite element analysis system, which can evaluate thickness effect and effect of mixed mode loading condition, is developed. Basic study on the mechanism of ductile fracture process is studied. Then this system is applied for the evaluation of interaction effect of multiple cracks in nuclear power plant structure. It is shown conservative evaluation is possible using this system. Results are presented in international and domestic journals. This system is shared in several research institutes for future application.