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An evaluation of the fracture toughness of a thin-walled pressure vessel with account for the structural and mechanical inhomogeneity of the welded joint

  • Reliability, Strength, and Wear Resistance of Machines and Structures
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Abstract

A finite-element model has been developed for calculating the fracture toughness of welded joints with account for the random distribution of the structural and mechanical properties of the metal within a weld area. The influence of the coefficient of variation of the yield strength upon the value of the J-integral for a weld crack has been shown using the proposed model. The fracture toughness calculations of a welded thin-walled pressure vessel have been carried out and correction functions for the J-integral have been determined based on the experimental data on the random distribution of the yield strength in the weld area.

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Authors and Affiliations

  1. Special Design and Technological Bureau “Nauka” Krasnoyarsk Scientific Centre of Siberian Branch Russian Academy of Sciences, Krasnoyarsk, Russia

    E. V. Moskvichev

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  1. E. V. Moskvichev
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Correspondence to E. V. Moskvichev.

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Original Russian Text © E.V. Moskvichev, 2015, published in Problemy Mashinostroeniya i Nadezhnosti Mashin, 2015, No. 2, pp. 32–37.

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Moskvichev, E.V. An evaluation of the fracture toughness of a thin-walled pressure vessel with account for the structural and mechanical inhomogeneity of the welded joint. J. Mach. Manuf. Reliab. 44, 135–139 (2015). https://doi.org/10.3103/S1052618815020119

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  • DOI: https://doi.org/10.3103/S1052618815020119

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