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International Journal of Steel Structures

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31-05-2018

Temperature Effects on Fracture Toughness Parameters for Pipeline Steels

Authors: Sourayon Chanda, C. Q. Ru

Published in: International Journal of Steel Structures | Issue 5/2018

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Abstract

The present article showcases a temperature dependent cohesive zone model (CZM)-based finite element simulation of drop weight tear test (DWTT), to analyse fracture behavior of pipeline steel (PS) at different temperatures. By co-relating the key CZM parameters with known mechanical properties of PS at varying temperature, a temperature dependent CZM for PS is proposed. A modified form of Johnson and Cook model has been used for the true stress–strain behavior of PS. The numerical model, using Abaqus/CAE 6.13, has been validated by comparing the predicted results with load–displacement curves obtained from test data. During steady-state crack propagation, toughness parameters (such as CTOA and CTOD) were found to remain fairly constant at a given temperature. These toughness parameters, however, show an exponential increase with increase in temperature. The present paper offers a plausible approach to numerically analyze fracture behavior of PS at varying temperature using a temperature dependent CZM.

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Title: Temperature Effects on Fracture Toughness Parameters for Pipeline Steels
Authors: Sourayon Chanda
C. Q. Ru
Publication date: 31-05-2018
Publisher: Korean Society of Steel Construction
Published in: International Journal of Steel Structures / Issue 5/2018
Print ISSN: 1598-2351
Electronic ISSN: 2093-6311
DOI: https://doi.org/10.1007/s13296-018-0075-1

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