混凝土的断裂损伤模型

本文从混凝土观结构出发，重点研究骨料界面的微裂缝，分析了微裂缝在不同外力水平下的萌生和扩展过程，用等效弹性一损伤柔度张量Ｃ来定义损伤，并求得各种不同扩展破坏情况下的Ｃ＾－ｄｉｊｋｌ，从而得到相应损伤的本构关系，最后给出一个复杂应力情况下的算例。

Damage model for concrete fracture

On the basis of micro structure theory. This paper studies the growing as well as extending processes of cracks around the interfaces of aggregates under different external loads. The damage of the body is defined by an equivalent elasticity-damage flexibility tensor . Once the in different stages of extending and damaging was determined, the constitutive relation of the damaged body can be found out. An example is given for demonstration.