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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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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.
Spot Welding;Fatigue Crack Initiation Life;Local Strain Approach;DC Potential Drop Method;
 Cited by
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고장력 강판 적용에 따른 자동차용 4겹 다층 점용접물의 용접성 및 적정 용접조건,권일현;김회현;백승세;양성모;유효선;

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Hyo Sun, Yu, 1999, 'A Study on Ultrasonic Test for Evaluation of Spot Weldability in Automotive Materials,' KSME International Journal, Vol. 13, No. 11, pp. 775-782

서창민, 강성수, 1988, '고장력 강판과 아연도금 강판간의 점용접 피로특성,' 대한기계학회논문집, 제12권, 제4호, pp. 747-754

이형일, 이태수, 김남호, 2000, '점용접 시편의 극한하중과 피로특성에 관한 실험적 고찰,' 대한기계학회논문집 A, 제24권, 제1호, pp. 38-51

박장원, 이태수, 채수원, 2000, '점용접부 최적설계를 위한 적응적 유한요소망의 구성,' 대한기계학회논문집 A, 제24권, 제7호, pp. 1763-1770

손일선, 이범노, 배동호, 홍정균, 2000, '잔류응력을 고려한 점용접 이음재의 피로설계,' 대한기계학회논문집 A, 제24권, 제3호, pp. 743-751

Barsom, J. M. and Rolfe, S. T., 1983, Fracture and Fatigue Control in Structures, Prentice-Hall, Englewood Cliffs, pp. 223-249

Pollard, B., 1982, Fatigue Strength of Spot Welds in Titanium-bearing HSLA Steels, SAE Paper 820284

Lawrence, F. V., 1983, 'An Empirical Method for Estimating the Fatigue Resistance of Tensile-shear Spot-welds,' SAE Paper 830035

高橋, 伊藤, 失崎, 1971, 鐵 と 鋼, Vol. 57, No. 9

河在宣, 宋智浩. 李時中, 1988, '變動荷重下의 疲勞壽命 豫測,' 大韓機械學會論文集, 第 12券, 第 4號, pp. 747-754

Mitchell, M. R., 1954, Fundamentals of Modern Fatigue Analysis for Design, Fatigue and Microstructure, ASM, pp. 385-437

Kikugawa, M., Jono, M., Kamata, T., Song, J. and Himuro, H., 1977, 'Low-Cycle Fatique under Varying Strain Conditions(Effects of the Mean Plastic Strain and the Stress Factor),' Bulletin of the JSME, Vol. 20, No. 140, pp. 145-152

Manson, S. S., 1965, 'Fatique : A Complex Subject-Some Simple Approximations,' Experimental Mechanics, Vol. 5, No. 7, pp. 193-226

Bannatine, J. A., Comer, J. J and Handdrpck, J. J., 1990, Fundamentals of Metal Fatigue Analysis, Prentice Hall, Englewood Cliffs, New Jersey 07632, pp. 59-64

Morrow, J., 1968, Fatique Design Handbook, Advance in Engineering, Vol. 4, Society of Automotive Engineers Warendale, Pa, Sec. 3.2, pp. 21-29

Smith, K. N., Waston, P. and Topper, T. M., 1970, 'A Stress-Strain Function for the Fatigue of metals,' Journal of Material, Vol. 5, No. 4, pp. 767-778

Neuber, H., 1961, 'Theory of Stress Concentration for Shear-Strained Prismatic Bodies with Arbitrary Nonlinear Stress- Strain Law,' Journal of Applied Mechanics, pp. 544-550

Topper, T. H., wetzel, R.and Morrow, J., 1968, 'Neuber's Rule Applied to Fatigue of Notched Specimens,' J. Materials, Vol. 4, No. 2, pp. 200-209

Koknke, P. E., 1997, ANSYS Theoritical Manual, Swanson Analysis System Inc., Houston, Pennsylvania