摘要
本文建立了受剪应力表面裂纹塑性失稳扩展的可靠性分析模型。采用三维弹塑性模型对其综合变量J积分进行了计算,分析了在不同的无量纲裂纹尺寸和外载应力情况下,裂纹失稳扩展的失效概率分布规律,为工程检测和维修提供指导。
In this paper, a reliability analysis method for unstable plastic fracture of a surface crack subjected to shearing stress is presented, and 3-D elasto-plastic model is used to compute the J-integral, a synthetic random variable. Distribution laws of the failure probability subjected to different normalized sizes and different normalized loads are studied, which can guide the detection and maintenance for engineers.
出处
《上海力学》
CSCD
1995年第2期145-151,共7页
Chinese Quarterly Mechanics
基金
航空基金
