岩体拉破坏非线性分析有限元程序的编制及其算例

Development of Non Linear FEM Program of Tensile Fracture and Its Calculation Example

根据岩体拉破坏的本构关系建立了岩体拉破坏非线性分析的有限元程序，并用简单的算例证明了该有限元模型的合理性和程序编制的正确性·把该程序嵌入到一般的岩体弹性及弹塑性分析有限元程序中，较好地反映了岩体受拉应力作用的变形特征·

According to the constitutive relation of rockmass of tensile fracture the non linear FEM program of tensile fracture analysis was developed, and the reasonability of this FEM model and correctness of the program was testified by using simple calculation examples. By adding this program in common elastic and elastoplastic FEM program the deformation characteristic of rockmass under tensile stress was presented.