框架结构在冲击荷载下的损伤与非线性分析

利用集中损伤力学的方法对三维框架结构在冲击载荷作用下的损伤分析。其基本思路是:把损伤参数作为系统的内部变量,在有限元的基础上,将连续介质力学、断裂力学和塑性铰概念结合起来分析结构的力学行为。最后通过对一个二层框架结构进行数值模拟分析,并与ABAQUS的计算结果作比较,验证其可行性。

Damage analysis of three-dimensional frame structure suffering from impact

The damage of three-dimension reinforced concrete frame structure suffering from impact is computed with a general formulation. The model has been developed within the framework of lumped damage mechanics. The basic idea is, on the basis of structure mode finite element formula, the combination of the methods of continuum damage and fracture mechanics with the concept of plastic hinge, with the damage parameter being regarded as the inner variable of system. A numerical simulation example of a two-storey RC frame structure is analyzed with both ABAQUS and lumped damage mechanics to verify the feasibility of the present method.