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A Study of Fatigue Life Prediction for Automotive Spot Weldment Using Local Strain Approach
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 Title & Authors
A Study of Fatigue Life Prediction for Automotive Spot Weldment Using Local Strain Approach
Lee, Song-In; Gwon, Il-Hyeon; Lee, Beom-Jun; Yu, Hyo-Seon;
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 Abstract
The fatigue crack initiation life is studied on automotive tensile-shear spot weldment made from cold rolled carbon steel(SPC) sheet by using DCPDM and local strain approach. It can be found that the fatigue crack initiation behavior in spot weldment can be definitely detected by DCPDM system. To predict the fatigue life of spot weldment, the local stresses and strains at the potential critical region are estimated by approximate method based on Neubers rule and elastic-plastic FEM analysis. A satisfactory correlation between the predicted life obtained from Local strain approach based on Neubers rule and experimental life can be found in spot weldment within a factor of 2.
 Keywords
Spot Welding;Fatigue Crack Initiation Life;Local Strain Approach;DC Potential Drop Method;
 Language
Korean
 Cited by
1.
알루미늄 합금판 저항 점용접부의 피로수명 예측,장건익;안병국;김동건;

Journal of Welding and Joining, 2002. vol.20. 2, pp.116-124
2.
고장력 강판 적용에 따른 자동차용 4겹 다층 점용접물의 용접성 및 적정 용접조건,권일현;김회현;백승세;양성모;유효선;

대한기계학회논문집A, 2006. vol.30. 5, pp.481-487 crossref(new window)
3.
피로 해석을 고려한 점용접부 모델링 기법의 성능 평가,변형배;이병채;주병현;

대한기계학회논문집A, 2005. vol.29. 8, pp.1153-1160 crossref(new window)
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