摘要
本文研究了时间相依性断裂。分析了裂纹尖端损伤分布。从断裂力学和连续介质损伤力学角度出发讨论了蠕变断裂问题以及表征蠕变裂纹生长率参量的适用范围。在一定限定条件下导出了蠕变裂纹生长率的表达式。
Time-dependent fracture is considered. The damage distribution ahead of crack tipis analysed The range of applicability of the characterizing parameter for the creepcrack growth is discussed on the basis of fracture mechanics and continum damage me-chanics. The creep crack growth rate is determined under certain conditions.
出处
《湘潭大学自然科学学报》
CAS
CSCD
1989年第1期108-114,共7页
Natural Science Journal of Xiangtan University
关键词
断裂
损伤
裂纹
生长率
Time-dependent fractur
creep damage
crack growth rate
