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有不少文献介绍了筒形件残余应力的测定方法,但这些方法都局限于没有轴向残余应力σ_x的情况下,或者有σ_x存在,σ_x沿轴向也是不变化的。由实践和理论分析可知,在多数工艺生产的护环中存在的残余应力是比较复杂的。不但存在着三向残余应力,而且轴向残余应力σ_x和切向残余应力σ_t沿轴向是变化的。这样,需要研究新的测量方法,来摸清护环中残余应力的分布规律。过去,工厂中已经做过一些大型的解剖试验,试图用切环方法,来确定在某
There are a lot of literature about the method of measuring the residual stress of the cylindrical part. However, these methods are limited to the case of no axial residual stress σx, or the existence of σx and the change of σx in the axial direction. From the practical and theoretical analysis, we can see that the residual stress in the retaining ring produced by most of the processes is quite complicated. Not only the presence of three-dimensional residual stress, and the axial residual stress σ_x and tangential residual stress σ_t change along the axial direction. In this way, the need to study new measurement methods to find out the distribution of residual stress in the guard ring. In the past, the factory has done some large-scale anatomical experiments, trying to use the ring method to determine the