Numerical Studies on Damage Evolution of Notched Round-Bar with Welding Mechanical Heterogeneity

Jian Xun Zhang; Ji Hong Li

doi:10.4028/www.scientific.net/KEM.297-300.1038

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 297-300Numerical Studies on Damage Evolution of Notched...

Numerical Studies on Damage Evolution of Notched Round-Bar with Welding Mechanical Heterogeneity

Abstract:

The effects of the welding mechanical heterogeneity on the damage evolution of notched round-bar tensile specimens were investigated numerically using a fully coupled elastic-plastic damage finite element method. Some parameters reflecting the welding mechanical heterogeneity such as strength mismatching, rupture strain and weld metal width were taken into account to study their effects on the damage evolution of the weld metal. The calculation results show that the damage evolution of the weld metal is affected strongly by the welding mechanical heterogeneity. The damage evolution of the weld metal becomes larger with the decrease of both the rupture strain and yielding stress of the base metal. The effects of the mechanical properties of the base metal on the damage evolution of the weld metal decreases with the increase of the weld metal width.

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Periodical:

Key Engineering Materials (Volumes 297-300)

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1038-1043

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.297-300.1038

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Online since:

November 2005

Authors:

Jian Xun Zhang, Ji Hong Li

Keywords:

Damage Evolution, Weld Joint, Welding Mechanical Heterogeneity

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