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Closed-Form Stress Intensity Factor Solutions for Spot Welds in Various Types of Specimens

Journal Article
2008-01-1141
ISSN: 1946-3979, e-ISSN: 1946-3987
DOI: https://doi.org/10.4271/2008-01-1141
Published April 14, 2008 by SAE International in United States
Closed-Form Stress Intensity Factor Solutions for Spot Welds in Various Types of Specimens
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Citation: Lin, P. and Pan, J., "Closed-Form Stress Intensity Factor Solutions for Spot Welds in Various Types of Specimens," SAE Int. J. Mater. Manf. 1(1):568-574, 2009, https://doi.org/10.4271/2008-01-1141.
Language: English

Abstract:

Closed-form stress intensity factor solutions at the critical locations of spot welds in four types of commonly used specimens are obtained based on elasticity theories and fracture mechanics. The loading conditions for spot welds in the central parts of four types of specimens are first examined. The resultant loads on the weld nugget and the self-balanced resultant loads on the lateral surface of the central parts of the specimens are then decomposed into various types of symmetric and anti-symmetric parts. Closed-form structural stress and stress intensity factor solutions for spot welds under various types of loading conditions are then adopted from a recent work of Lin and Pan to derive new closed-form stress intensity factor solutions at the critical locations of spot welds in the four types of specimens.