Automated Fatigue Life Assessment for Welded Cruciform Joint Considering Welding Residual Stress

Abstract:

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For a rational design of a welded joint, it is necessary to repeatedly assess the fatigue life of the joint with various dimensions and welding conditions. In this paper, an automated, repeatable/repetitive fatigue life assessment process for a welded cruciform joint was studied. The process consists of a structural analysis to obtain the stress distribution in the vicinity of the weldtoe, a thermal elasto-plastic analysis to determine the welding residual stress, and a fatigue life assessment based on the analyzed stress distribution and welding residual stress. With changes in design conditions including dimensions and/or welding heat input, the aforementioned tasks have to be performed. Using a commercial tool for system integration, automation of a repeated process for a welded cruciform joint based on 2D modeling was achieved. In this automated system, data exchanges between programs, regardless of whether they are commercial or in-house, work well, and parametric studies for optimal design can be performed.

Info:

Periodical:

Key Engineering Materials (Volumes 297-300)

Edited by:

Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim

Pages:

2800-2805

DOI:

10.4028/www.scientific.net/KEM.297-300.2800

Citation:

T. K. Lee et al., "Automated Fatigue Life Assessment for Welded Cruciform Joint Considering Welding Residual Stress ", Key Engineering Materials, Vols. 297-300, pp. 2800-2805, 2005

Online since:

November 2005

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Price:

$35.00

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