一种基于能量最小化的断裂准则及其在ABAQUS软件中的应用

A Fracture Criteria Based on Energy Minimization and Its Application in ABAQUS Software

研究法国电力公司研发部提出的一个新型的脆性断裂能量准则——G_(p)方法论,该理论将断裂力学和损伤力学相结合,基于能量最小化原则,为判断结构中裂纹是否扩展提供了理论依据。同时,为推动G_(p)方法论的工程应用,基于标准CT50试样,研究了在通用有限元软件ABAQUS中应用G_(p)断裂评估准则的方法。

In this paper,a new brittle fracture energy criterion called as G_(p) methodology proposed by the R&D Department of EDF was investigated,which has fracture mechanics combined with damage mechanics(based on the energy minimization principle)to provide a theoretical basis for judging the crack propagation in structures.Meanwhile,for purpose of promoting the engineering application of G_(p) methodology,the method of applying G_(p) fracture evaluation criterion in ABAQUS was studied based on the standard CT50 sample.