摘要
本文基于分子动力学方法,建立了含边缘裂纹缺陷的微观断裂模型,计算了锆材料在300 K温度下的T-S (Traction-Separation)曲线,得到了表征断裂属性的内聚力模型参数,为跨尺度断裂研究提供参数。同时,提出了在原子尺度断裂模型的建模方法和内聚力单元参数的提取方法和从微观到宏观的跨尺度断裂模型的整体计算思路。
Based on the molecular dynamics method, a micro-fracture model with edge crack defects is established. The TS(Traction-Separation) curve of zirconium material at 300 K is calculated and the parameters of cohesive zone model(CZM) characterizing the fracture properties are obtained. In the above process, the modeling method of the atomic-scale fracture model and the extraction method of CZM parameters are proposed. The overall calculation of the cross-scale fracture model from micro to macro is introduced clearly.
作者
王昌昊
陈文俊
Wang Changhao;Chen Wenjun(College of Aeronautic Engineering, Chengdu Aeronautic Polytechnic,Chengdu 610100;College of Architecture and Environment, Sichuan Unversity, Chengdu 610065, China)
出处
《广东化工》
CAS
2019年第8期87-89,79,共4页
Guangdong Chemical Industry
基金
四川省军民融合研究院一般项目(2017SC110228)
成都航空职业技术学院自然科研项目(061837)
关键词
锆
微观断裂模型
T-S曲线
内聚力模型
zirconium
micro-fracture model
TS(Traction-Separation) curve
cohesive zone model(CZM)
