The camshaft is one of the most important rotating parts in diesel engine.As a continuous rotating part,the high-cycle fatigue problem of camshafts has always been a hotspot in engineering.Generally speaking,nominal stress method is used to analyse high-cycle fatigue problems,but the continuous operation of camshafts determines that nominal stress method can not be used directly.Based on this,a load-discretization method based on the fatigue cumulative damage criterion and nominal stress method is proposed to solve the fatigue calculation problem of continuous rotating parts.
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