Effect of isotropic and anisotropic damage and plasticity on ductile crack initiation
Source abstract
Abstract
In this article, the effects of plastic anisotropy and damage on ductile crack initiation (ductile failure) are studied in a thermodynamically consistent framework. First, isotropic and anisotropic continuum damage models of Lemaitre are modified to incorporate anisotropic plasticity. In the next stage, a subroutine is developed to add the damage formulation to Abaqus finite element package. A highly ductile material with anisotropic plastic behavior, API 5L X100 pipeline steel, is selected for this study. Finite element analyses are done to simulate isotropic/anisotropic plasticity coupled with isotropic/anisotropic damage. Finite element results are compared with the result of tests on smooth and notched specimens, and the effects of anisotropic plasticity, anisotropic damage, geometry changes, triaxiality in stress and their mutual effects and interactions on post yield behavior and crack initiation are studied.
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Research context
OpenAlex topics: Metal Forming Simulation Techniques · Metallurgy and Material Forming · High-Velocity Impact and Material Behavior
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Faculty of Mechatronics, Department of Mechanical Engineering, Islamic Azad University, Karaj Branch, Iran
Mechanical Properties Research Lab (MPRL), Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran
References (35)
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