Therefore the design criterion for the shaft is proposed, i. e. the fatigue strength of the shaf should depend on the torsional fatigue strength.
挠性轴强度校核主要是校核疲劳强度，为此提出了合理设计挠性轴的原则，即挠性轴的疲劳强度应取决于扭转疲劳强度。
This paper aims to discuss the fundamental theory about reliability of rotation shaft, as an example, the fatigue strength of electrical machine shaft has been calculated.
本文论述了转轴可靠性理论，并以实际算例对电机轴的疲劳强度进行了可靠性计算。
Nodular cast iron crank shaft which has not been processed by adding nitrogen, its surface fatigue strength is lower, this is the reason that results in the fracture.
球墨铸铁曲轴未经过氮化处理，表面疲劳强度低是导致曲轴断裂的原因；
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