摘要
针对在裂纹前沿设置奇异单元的断裂力学有限元分析模型,运用子模型方法计算了U型管弯管部分表面纵向裂纹前沿各点的应力强度因子,得到了裂纹前沿最深点应力强度因子修正系数FI随弯管和裂纹参数的改变而变化的曲线图谱。
Based on the model of fracture mechanics finite element analysis put with singular element along the front edge of the crack ,the stress intensity factors of the elliptical surface crack of U-tube have been calculated with sub-modeling method. The diagrammatic curves of F Ⅰ （stress intensity factor amending factor） of the deepest point on the edge of the crack have been drawn up.
出处
《装备制造技术》
2008年第3期91-93,共3页
Equipment Manufacturing Technology
关键词
子模型
裂纹
U型管
应力强度因子
sub-modeling
crack
U-tube
stress intensity factor
