带节理型裂缝物体损伤弹性的数值分析

Numerical Analysis of Damage Elasticity of the Body with Jointed Cracks

利用一种接触摩擦单元 ,用有限元方法对一节理体模型的损伤弹性进行了数值分析 ,并与试验结果进行了比较 ,给出了节理体损伤弹性随荷载方向与节理方向的相对变化而变化的规律 .

Jointed crack sets formed by micro-crack propagation exist widely in rock and masonry engineering, which obviously reduce the elastic behaviour of the material. A stable contact frictional element is employed in this paper to simulate the jointed crack sets in numerical analysis with finite element method in a special model. Different orientations of the jointed cracks with respect to the loading direction are considered in computation. The results are compared with that from a laboratory test and the variation rule of the damage elasticity of the material is concluded.