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Temperature Effects on Fracture Toughness Parameters for Pipeline Steels
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.
Temperature Effects on Fracture Toughness Parameters for Pipeline Steels
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.
Temperature Effects on Fracture Toughness Parameters for Pipeline Steels
Chanda, Sourayon (Autor:in) / Ru, C. Q. (Autor:in)
International Journal of Steel Structures ; 18 ; 1754-1760
31.05.2018
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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