摘要
文章根据加卸载路径的方式对现有的CCZM进行了分类,并详细阐述了各类型CCZM的适用范围与优缺点;归纳总结了不同损伤演化法则所对应的相关算法。基于此,文章提出了CCZM构建过程中需要考虑的若干关键问题,并且从发展的角度阐述了CCZM从基于试验的现象学模型到基于经验假设的损伤力学模型、再到基于裂纹扩展微观机制的损伤力学模型的进步过程。
In this paper,existing CCZM is classified according to the manner of the unloading-reloading path and the applicable range and pros and cons of various damage evolution law is summarized.Then,the paper puts forward several key problems in the process of building a CCZM.Finally,with the view of development,the paper states the enhancement of CCZM from the phenomenological model based on experiments to the damage mechanics model based on empirical assumptions,then to the the damage mechanics model based on crack propagation mechanisms.
出处
《工程技术研究》
2017年第11期133-134,共2页
Engineering and Technological Research
关键词
循环内聚力模型
疲劳裂纹扩展
加卸载路径
损伤演化法则
Cyclic cohesive model
Fatigue crack growth
Unloading-Reloading path
Damage evolution law
