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정은화(E.W.Jung),최복록(B.L.Choi),전재욱(J.W.Jun),유영덕(Y.D.Yoo) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_2
In this paper, we studied the method of fatigue life estimation for Body Structure. In the first place, we have measured random road surface and acquired Displacement PSD about the road surface.In dynamic analysis,we have acquired stress PSD using the displacement PSD as a input. Using this stress PSD, Body fatigue life can be estimated because Stress PSD involved Dynamic stress history of the FE model shell element describing body structure. The availability of this method is confirmed through proving ground fatigue test.<br/>