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Method of Structural Cold Working-Residual Compressive Stress Distribution Quantitative Matching Design

机译:结构冷水剩余压缩应力分布定量匹配设计的方法

摘要

To solve the technical problem of the incapacity to perform a quantitative matching design of residual compressive stress in the process of prior structural cold working-residual compressive stress design, the invention provides a method of structural cold working-residual compressive stress distribution quantitative matching design, characterized by treating the fatigue strength of a mechanical structure and parts as a field, and matching a structural stress field and a fatigue strength field organically, to quantitatively match the residual compressive stress in conjunction with characteristics of the cold working process. The method specifically includes determination of the maximum stress amplitude and a gradient distribution thereof at a dangerous position of the structure, determination of an ideal fatigue strength distribution of the dangerous cross-section of the structure, determination of a fatigue strength field according to curves of end quenching tests for material and a requirement for heat treatment, determination of the limit of the residual compressive stress according to characteristics of the structural cold working process, and determination of an actual residual compressive stress distribution of the dangerous cross-section in conjunction with cold working and the fatigue strength distribution.
机译:为了解决现有结构冷加工 - 残余压缩压缩应力设计过程中的丧失能力的能量匹配设计的能量匹配设计,本发明提供了一种结构冷加工 - 残余压缩应力分布定量匹配设计的方法,以机械结构和部件的疲劳强度为特征,并有机匹配结构应力场和疲劳强度场,以与冷加工工艺的特性相结合定量匹配残余压缩应力。该方法具体地包括在结构的危险位置确定最大应力幅度和梯度分布,确定结构的危险横截面的理想疲劳强度分布,根据曲线确定疲劳强度场的确定用于材料的最终淬火试验和热处理的要求,根据结构冷加工工艺的特性确定残留压缩应力的极限,并确定危险横截面的实际残余压缩应力分布与冷工作和疲劳强度分布。

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