A finite element study on residual stress stability and fatigue damage in high-frequency mechanical impact (HFMI)-treated welded joint
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- 作者：Eeva Mikkola
- 关键词：High-frequency mechanical impact (HFMI) ; Welded joints ; Residual stresses ; Variable amplitude loading
- 刊名：International Journal of Fatigue
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：94
- 期：part_P1
- 页码：16-29
- 全文大小：2001 K
文摘
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- <p id="p0005">Mechanisms affecting fatigue improvement in HFMI-treated joint were investigated.p>
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- <p id="p0010">Residual stress relaxation was simulated with elastic-plastic FE analysis.p>
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- <p id="p0015">Full residual stress relaxation was observed for R = 0.5 and an underload of 0.6fy.p>
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- <p id="p0020">Relative fatigue damage analysis showed benefit from HFMI even in these cases.p>
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- <p id="p0025">The results indicate that this was due to improved geometry and strain hardening.p>