实质断裂强度性能受到了外加载荷与磨削残余应力的组合应力的制约。
The real fracture strength is restrained by both stresses caused by outside load and residual stresses after grinding.
当外加载荷大小、加载宽度及结构体长度相同时，柱壳结构中截面上拉应力最大值大于平板。
When their loading sizes, widths and lengths are the same, the maximum value of stress at the center of cross-section will be greater than that of the plane structure.
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