Application of Damage Summation to Fatigue Analysis of Crankshaft

Damage summation theory based on Palmgren-Miner rule is used to study the fatigue life of a crankshaft by means of a commercial finite element method(FEM) software,and the influence of stress(strain) history on the life is discussed in detail.Compared to quasi-static fatigue analysis,damage summation theory can express the influence of loading history on the fatigue of crankshaft.