局部应力场中表面裂纹的线弹簧模型分析

THE LINESPRING MODEL ANALGSIS FOR A LOCAL STRESS FIELD OF SURFACE CRACK

线弹簧被用以模拟考虑局部几何形状的边裂纹板条，由有限元方法，结合Ｔ型板架结构进行了实例分析．

The paper improves the LineSpringModel (LSM)Proposed by Rice.The edge crack plate with local geometry near crack position is used to simulate the spring, thus, the flexible coefficients of spring is determined.The part through surface crack located in weld toe of 'T' type welded plate structure is analysed in combination with FEM Calculation.The improved model is validated as comparing calculation results with 3D FEM results.