实质断裂强度性能受到了外加载荷与磨削残余应力的组合应力的制约。
The real fracture strength is restrained by both stresses caused by outside load and residual stresses after grinding.
也有一个对最大组合应力的限制，持续负载加上位移应力，以限制渐变。
The maximum operating stress is computed and limited to prevent conditions of ratchet(progressive plastic deformation with cycles), and not to fatigue.
给出高强钢焊趾表面裂纹在压弯组合应力下应力强度因子及其疲劳寿命计算式。
The formulae for calculating SIF and fatigue life of surface crack at weld toe of the high-strength steel under the combination stresses have been presented.
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