混凝土软化特性的数值模拟

Numerical Method to Simulate Strain Softening of Concrete

采用微裂纹区分段线性应变软化律,并考虑由微裂纹演化而造成的弹性刚度劣化对裂缝扩展的影响,在给定?-?软化律的基础上,用应变增量迭代法,数值模拟了混凝土三点弯曲粱的P-?全曲线.

In this paper,the strain softening law for the microcrack zone is assumed to be linear in different deformation stages.The degradation of elastic stiffness is considered.When the O-W,softening law is given,using strain increment iteration,the numerical simulation of the P-? complete curve of a three-point bending concrete beam is realized.