Erosion geometry effects on the mdoe I stress intensity factor (SIF) for a crack emanating from an erosion' deepest point in a multiply eroded, autofrettaged, pressurized, thick-walled cylinder are investigatted. The problem is simulated as a two-dimensional problem and is solved via the FEM method. Autofrettage, based on von Mises yield criterion, is simulated by thermal loading and SIFs are determiend by the nodal displacement method. SIFs are determined by the nodal displacmeent method. SIFs are evalauted for a variety of relative crack lengths, a_0/t = 0.01 - 0.45 emanating from the tip of erosions of different geometries, namely, a) semi-circular erosions of relative depths of 1-10
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机译：研究了腐蚀几何形状对从腐蚀最深处发出的裂纹在多重腐蚀，自动填充，加压的厚壁圆柱体中的Mdoe I应力强度因子（SIF）的影响。该问题被模拟为二维问题，并通过FEM方法解决。通过热负荷模拟基于von Mises屈服准则的自紧力，并通过节点位移法确定SIF。 SIF通过节点置换法确定。对SIF进行了各种相对裂纹长度的评估，a_0 / t = 0.01-0.45，源自不同几何形状的腐蚀尖端，即a）相对深度为1-10的半圆形腐蚀
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