Abstract In this study, normalized mode-I stress intensity factors (SIFs) along fronts of three-dimensional tangential surface cracks contained in rotating hollow disks are presented. A wide range of surface cracks with different values of crack aspect ratio, crack depth and radial coordinate along with different geometric parameter settings of the disk are included in the study, yielding a large class of solutions that may be faced with in practical engineering applications. Equations are also developed to allow computations of SIFs for any values of the parameters defining the problem within their practical limits. The results show that for a given crack shape and normalized depth, normalized SIFs decrease with increasing radial coordinate of the crack and with increasing ratio of the inner and outer disk radii. It is also observed that normalized SIFs increase slightly with increasing normalized thickness of the disk for a given crack shape, location and depth. A stress-based procedure is also introduced and validated that can be used to determine the normalized SIFs for a crack located at a radial coordinate based on the normalized SIFs of another crack located at a different radial position.

中文翻译：

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旋转空心盘切向表面裂纹的应力强度因子

摘要 在这项研究中，提出了沿包含在旋转空心盘中的三维切向表面裂纹前沿的归一化 I 型应力强度因子 (SIF)。研究中包括了具有不同裂纹纵横比、裂纹深度和径向坐标值以及不同圆盘几何参数设置的各种表面裂纹，从而产生了实际工程应用中可能面临的一大类解决方案。还开发了方程，以允许在实际限制内为定义问题的任何参数值计算 SIF。结果表明，对于给定的裂纹形状和归一化深度，归一化 SIF 随裂纹径向坐标的增加和内外圆盘半径比的增加而减小。还观察到，对于给定的裂纹形状、位置和深度，归一化 SIF 随着圆盘归一化厚度的增加而略有增加。还引入并验证了基于应力的程序，该程序可用于根据位于不同径向位置的另一个裂纹的标准化 SIF 确定位于径向坐标处的裂纹的标准化 SIF。