摘要
本文把混凝土的动静力损伤本构模型通过应变等价性假设引入到线弹性断裂力学中，推出了混凝土Ⅲ型裂缝在动静力荷载作用下缝端附近的损伤场，给出了相应的判据，实现了损伤与断裂的耦合分析，为把损伤理论应用到混凝土断裂分析中提供了一条可行的途径。文末还给出了混凝土Ⅲ型裂缝允许损伤尺度的估计值。
This paper deals with the damage fracture analysis of mode Ⅲ crack of concrete.Using the theory of damage mechanics, the damage fields near the tip of the crack with static and dynamic loading are derived. In addition, a fracture criterion is developed by means of the concept of damage scale, so that the damage and fracture could be coupled in the same model.The present theory provides a new way to analyze the fracture of concrete crack using damage mechanics.
出处
《工程力学》
EI
CSCD
1995年第3期1-6,共6页
Engineering Mechanics
基金
国家自然科学基金
关键词
混凝土
Ⅲ型裂缝
损伤断裂
静力
动力
concrete
mode Ⅲ crack
damage fracture
static
dynamic
