The Prediction Method of S-N Curve for Welded Steel Structure Using Critical Distance Theory

Abstract:

The welded steel structure is used as the research object in this paper. On the basis of numerical analysis of welded steel structure in 3-D residual stress field, the predicted method of the fatigue strength and S-N curve for welded steel structure is set using the volume method of the critical distance theory. The fatigue strength and S-N curve of the typical the welded steel structure including butt, misaligned welded and T-shape joints are got through theory prediction. The predicted value coincides with the experimental value. This method can be reduced fatigue test, saved funds and provided reference for engineering application.

• Periodical: Applied Mechanics and Materials (Volumes 193-194)
• Pages: 1436-1439
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.193-194.1436
• Online since: August 2012
• Authors: De Qing Guan, Yan Hui Pan
• Keywords: 3-D Residual Stress, Critical Distance Theory, Effective Stress Concentration Factor, Fatigue Notch Factor, Fatigue Strength, S-N Curve, Welded Steel Structure

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