Abstract

The results of calculated–experimental and numerical studies of the relative strain intensity factors in the case of semi-elliptical inclined surface cracks in the weld joints of 12Kh18N10T austenite stainless steels with the assumption of redistribution of strain and initial residual stresses under nonlinear boundary loading conditions are presented. A parametric equation for the determination of the relative strain intensity factors in the case of semi-elliptical inclined surface cracks is given. This new parametric equation allows one to evaluate the comparative survivability of the local zones of details and construction in the bulk weld joint upon elastoplastic static and low-cycle loading.

中文翻译：

---

奥氏体钢的空间弹塑性应变和焊接接头断裂的力学研究

摘要

在非线性边界载荷条件下应变和初始残余应力重新分布的假设下，12Kh18N10T奥氏体不锈钢焊接接头中半椭圆形倾斜表面裂纹情况下的相对应变强度因子的计算，试验和数值研究结果被提出。给出了确定半椭圆形倾斜表面裂纹情况下的相对应变强度因子的参数方程。这一新的参数方程式使您能够评估在弹塑性静态载荷和低周向载荷作用下，整体焊缝局部和构造局部区域的比较生存能力。