【摘要】 本文将线弹簧模型推广应用于复合型应力强度因子的计算。将复合型线弹簧单元与ADINA程序相联接,便得到分析复杂结构物(特别是诸如管节点一类的空间相贯体结构)中所含表面裂纹的复合型应力强度因子程序。算例表明:该方法具有较高的计算效率而又能满足工程分析的精度要求。更多还原

【Abstract】 The Line Spring Model (LSM) is extended to the determination of mixed mode stress intensity factor in the present paper. When linked with the finite element code ADINA, this line spring element can be engaged in the analysis for surface flaws in complicated shell structures, such as spatially intersecting structures like tubular joints. Representative calculations indicate that the present methodology is numerically efficient and satisfies the required accuracy of engineering analysis.更多还原