【摘要】 热权函数法适用于热载荷作用下裂纹尖端应力强度因子过渡过程的计算,文章对平面裂纹体热权函数法中权函数U/a的计算进行了分析研究。用虚拟结点力法与ABAQUS有限元分析相结合,并组装得到整体刚度矩阵,对相关数据提取运算实现了权函数U/a中dU0/da的计算,通过等效结点力加载并有限元分析最后得到平面裂纹体的权函数场的分布。更多还原

【Abstract】 Thermal weight function method is suitable for calculation of crack tip stress intensity factor of the transition process.The method of calculating weight function U/a was discussed in solving the plane crack stress intensity factor(SIF),using virtual nodal force method combined with the finite element analysis of ABAQUS,and assembling to get the global stiffness matrix,picking out relative data and calculating U/a in dU0/da.Finally,the field distribution of the weight function of the plane crack was obtained by loading equivalent nodal force and ABAQUS finite element analysis.更多还原