Abstract

The effective notch stress considers the influence of notch effect and solves the stress singularity in FEA by setting virtual notch radius. However, this method also has limitations such as inaccurate calculation results affected by virtual radius and modeling difficulty. The structural stress method based on fracture mechanics recommended in this paper has no such limitation, but also takes notch effect and stress singularity into account. To prove this, the engineering application ability of the two methods is compared through two cases. The results show that the structural stress method has better engineering applicability and is worth popularizing.

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