The classification of piping stress, stress development factors and stress release method are introduced.
论述了管道应力分类、产生的因素以及应力消除方法。
In this paper, the mechanical model of positive-negative formation for revolving shell is analyzed, the classification method is given according to the stress yield criterion.
本文分析了回转壳体正负成形的力学模型，基于应力屈服条件对回转壳体的变形进行了分类；
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