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Influence of crack depth and strength matching on deformation and plastic zone for welded joint specimen

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Abstract

By using the 2-dimensional elasto-plastic finite element method, the effects of crack depth and strength matching properties of welds on the deformation and plastic zone have been studied for three point bend specimens. The results indicate that, in the loading process of a welded joint specimen, the influence of crack depth and strength matching properties on the deformation parameters such as loading point displacement, crack mouth opening displacement, plastic rotational factor, and development of plastic zone is evident. The boundary between shallow crack and deep crack specimens is also influenced by the strength matching of welded joints. Moreover, the crack depth and strength matching of the welded joints have an important effect on the fracture-resistant capability of the specimens. The fracture-resistant capabilities of shallow crack specimens and overmatched joint specimens are better than those of deep crack specimens and undermatched joint specimens, respectively.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Xi' an Jiao-tong University, Xi' an, Shaanxi Province, People's Republic of China

    W. Tang & Y. W. Shi

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  1. W. Tang
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  2. Y. W. Shi
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Tang, W., Shi, Y.W. Influence of crack depth and strength matching on deformation and plastic zone for welded joint specimen. Int J Fract 74, 77–87 (1996). https://doi.org/10.1007/BF00018576

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  • DOI: https://doi.org/10.1007/BF00018576

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