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The Fatigue Limit of Spot-Welded Lap Joints
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English
Abstract
Spot welded lap joints are quite common in the body and in the chassis of cars, although their low fatigue strength is well known. Meanwhile a procedure to correlate the geometry of the joint to the design fatigue strength is not yet available in the literature. Aim of this paper is to find a correlation between fatigue strength and geometry condidering both low carbon and HSLA steel joints.
Experimental fatigue data available in the literature have been reanalyzed using an unified scatter band approach and the check has been extended to different geometries. On the basis of the obtained results suggestions are given for improving the fatigue strength of the joints.
Authors
Citation
Rossetto, E., Rossi, F., Vaschetto, L., and Atzori, B., "The Fatigue Limit of Spot-Welded Lap Joints," SAE Technical Paper 870640, 1987, https://doi.org/10.4271/870640.Also In
References
- GOLAND, M. REISSNER, E. The stresses in cemented joints J. of Applied Mech. March 1944 17 27
- WELTER, G. Fatigue tests of spot welded steel sheets Weld. J. Spt. 1949 414s 438s
- WELTER, G. Stresses around a spot weld under static and cyclic loads Weld. J. Nov. 1950 565s 576s
- WELTER, G. CHOQUET, A. Internal stress distribution of single spot welds in relation to their fatigue life Weld. J. April 1959 145s 158s
- ZOLOTAREV, B.B. Distribution of stress in a spot weld under load Weld. Prod. March 1960 28 33
- CHOQUET, A. Improvement of the fatigue life of spot-welds WRC Bulletin 112 Feb. 1966
- REINNHARDT, K.G. HANIG, C.H. Spannungsverteilung in Zugbeanspruchten Einschittigen Punktschweiss-und Punktschweissklebverbindugen Schw. Tecn. Juli 1967 311 316
- UEDA, T. KAWATAKA, H. Fatigue strength of spot welded joints Trans. NRIM 5 1970 36 49
- BURMISTROV, V.P. Calculating the local stresses in spot welded joints subjected to concentrated forces Aut. Weld. August 35 38
- NAVROTSKII, D.I. Simplified calculation of spot welded joints Aut.Weld. March 1972 16 19
- YIH-RENN KAN Fatigue resistance of spotwelds. An analytical study Metals Eng. Quart. Nov. 1976 26 36
- VANDENBOSSCHE, D.J. Ultimate strength and failure mode of spot welds in high strength steels Paper n. 770214 SAE Congress and Exposition Detroit Feb. 1977
- GURNEY, T.R. Some finite - element stress analyses of simulated diffusion bonded lap joints J. of Strain Analysis 12 4 1977 331 338
- CURTI, G. et al. Stato di tensione nei giunti saldati a sovrapposizione Riv. Ital. Sald. 3 1977 119 126
- Analisi delle sollecitazioni sui giunti a sovrapposizione Rapporto Fiat Ottobre 1981
- WELTER, G. CHOQUET, A. Fatigue tests of spot welds in Cor-Ten and mild steel Weld. J. March 1954 134s 140s
- KEARNS, W.H. et al. The static and fatigue behaviour of spot welded joints in titanium Weld. J. May 1955 214s 250s
- MASLOV; G.A. ZOLOTAREV, B.B. Improving the strength of spot welded joints in 30hGSA, 12G2A and EI659 steel by electric heat-treatment Weld. Prod. August 1959 61 74
- BARSCH, W. BARSCH, G. Verbesserung der Dauerfestigkeit und Festigkeit von Einschnittigen Punktschweiss-Verbindungen durch ein Kombinierter Schweissverfahren Schw, Tecn. May 1962 217 219
- ANDREEV, N. Kh. Fatigue strength of spot welded joints in titanium and aluminium alloys and special steels Weld. Prod. June 1962 19 26
- WELTER, G. CHOQUET, J.A. Temperature effects on the hydrodynamic compression treatment of spot welds Weld.J. May 1964 202s 208s
- REINHARDT, K.G. SEYFFAHRTH, W. Dynamische Festigkeit von Punktschweiss-Klebverbindungen und Punktschweissbarkeit von PVC-Plastisolen Schw. Tecn. August 1972 357 360
- OVERBEEKE, J.L. DRAISMA, J. Fatigue characteristics of heavy-duty spot Welded lap joints Metal. Constr. July 1974 213 219
- POLLARD, B. Spot welding characteristics of HSLA steel for automotive applications Wdg. J. August 1974 343s 350s
- OVERBEEKE, J.L. Fatigue of spot welded lap joints Metal. Constr. May 1976 212 215
- OVERBEEKE, J.L. DRAISMA, J. The influence of stress relieving on the fatigue of heavy-duty spot welded joints Weld. Res. Int. 1977 3 241 253
- SATOH, T et al. Fatigue strength of multi-spot welds in mild steel, I.I.W. Doc. III-584 1978
- SATOH, T et al. Fatigue strength of multi-spot welded joints, I.I.W. Doc. 111-638 1980
- Resistenza a fatica di giunti a sovrapposizione saldati per punti in acciai di diverso tipo, Rapporto Fiat Dicembre 1980
- FRANZ, G. Das Tragverhalten von Punktschweissverbindungen Sch. Tec. Oktober 1966 446 449
- CAPPELLI, P.G. CASTAGNA, M. FERRERO, P. Resistenza a fatica di giunti saldati a punti in acciai basso legati ad alto limite di snervamento Rivista di Mecc. Nov. 1977 49 55
- HAIBACH, E. Die Schwingfestigkeit von Schweissverbindungen aus der Sicht einer oertlichen Beanspruchungs-messung L.B.F. Darmstadt 1968
- HAIBACH, E. ATZORI, B. Ein statistiches verfahren fur das erneute Auswerten von Ergebnissen aus Schwingfestigkeitsversuchen und fur das Ableiten von Bemessungsuncterlagen, angewandt auf Schweissverbindungen aus A1 Mg5 4 1975 267 272
- ATZORI, B. HAIBACH, E. Deformazioni locali al piede dei cordoni di saldatura d'angolo e loro conrelazione con la vita a fatica del giunto VII Conv.Naz. A.I.A.S. Cagliari, Sett. 1979