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圆管表面斜裂纹应力强度因子和临界裂纹长度仿真分析（Simulation of Stress Intensity Factors and Critical Crack Length of Surface Oblique Crack on Round Tube）
表面斜裂纹 应力强度因子 临界裂纹长度 应变能密度
2010/12/28
针对圆管表面斜裂纹，建立基于弹性断裂理论和复变函数理论的计算模型。研究圆管表面斜裂纹发生扩展时临界状态所对应的应力强度因子和裂纹临界尺寸在各种相关因素影响下的变化规律。以I、II型复合裂纹为例，采用应变能密度理论对其进行了分析。对开裂角、裂纹所处角度及裂纹的几何尺寸等因素的影响进行仿真计算。得到裂纹所处角度对复合型裂纹两个应力强度因子影响的曲线，并对其影响的程度进行了比较。另外，对裂纹所处角度和开...
A Finite Element Calculation of Stress Intensity Factors of Cruciform and Butt Welded Joints for Some Geometrical Parameters
Stress Intensity Factor FRANC2D Welded Joints
2010/1/15
With welded joints, stress concentrations occur at the weld toe and at the weld root, which make these regions the points from which fatigue cracks may initiate. To calculate the fatigue life of welde...
Dynamic stress intensity factors around two cylindrical cracks in an infinite elastic medium subject to impact load
Stress intensity factor Two cylindrical cracks Transient stresses
2010/9/27
Dynamic stresses are solved for two cylindrical cracks in an infinite elastic medium. Incident shock stress waves pass through the elastic medium normal to the cracks’ axis. In the Laplace transform d...