The most dangerous point is at the root of the first engaged tooth of a joint. Generally, the biggest values of stress and strain may exceed the yield limit.

最危险点在接头的第一啮合齿的齿根处，最大应力应变值一般均超过屈服极限。

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And it analyzed that hob tooth height and tooth top pour round radius impacted on gear tooth root crooked stress.

分析了滚刀齿高和齿顶倒圆半径对所切齿轮齿根弯曲应力的影响。

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In the thesis, the contact stress, bending stress on the root and the contact force on the tooth have been calculated by Finite Element Method (FEM).

文章采用有限元接触计算方法，计算了螺旋锥齿面接触应力和齿根弯曲应力以及齿面接触合力。

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