Plastic collapse analysis in multiaxially loaded defective pipe specimens at different temperatures

A comprehensive numerical investigation is carried out using a newly developed constitutive model to describe failure at low temperatures in multiaxially loaded cracked pipes made of 316L stainless steel. The kinetic phase transformation and the temperature-dependent fracture criterion are implement...

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Bibliographic Details
Published inJournal of Pipeline Science and Engineering Vol. 3; no. 1; p. 100092
Main Authors Li, Y., Sakonder, C., Paredes, M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.03.2023
KeAi Communications Co. Ltd
Subjects
Cracked pipes
Ductile fracture
Martensite kinetic phase transformation
Multiaxial loads
Ductile fracture
Cracked pipes
Martensite kinetic phase transformation
Multiaxial loads
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Summary:A comprehensive numerical investigation is carried out using a newly developed constitutive model to describe failure at low temperatures in multiaxially loaded cracked pipes made of 316L stainless steel. The kinetic phase transformation and the temperature-dependent fracture criterion are implemented to accurately capture the mechanical response at different temperature levels. Although experimental observations of these simulations were not available, their results were quite consistent with some already published results obtained on similar materials and loading conditions at room temperature. The results indicate that the existing multiaxial plastic collapse failure criterion, including shearing, still provides a fail-safe design margin for low temperature loading conditions, including internal pressure. Moreover, martensite kinetic phase transformation plays an important role, especially during straining at low temperatures.
ISSN:2667-1433
2667-1433
DOI:10.1016/j.jpse.2022.100092