Article
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Thermomechanical Peridynamic Modeling for Ductile Fracture
Version 1
: Received: 21 April 2023 / Approved: 21 April 2023 / Online: 21 April 2023 (08:09:17 CEST)
A peer-reviewed article of this Preprint also exists.
Liu, S.; Han, F.; Deng, X.; Lin, Y. Thermomechanical Peridynamic Modeling for Ductile Fracture. Materials 2023, 16, 4074. Liu, S.; Han, F.; Deng, X.; Lin, Y. Thermomechanical Peridynamic Modeling for Ductile Fracture. Materials 2023, 16, 4074.
Abstract
In this paper, we propose a modeling method based on peridynamics for ductile fracture at high temperatures. A thermoelastic coupling model combining peridynamics and classical continuum mechanics is used to limit the peridynamics calculations to the failure region of a given structure, thereby reducing computational costs. Then, a plastic constitutive model of peridynamic bonds is developed to capture the ductile-fracture process of the structure. Furthermore, an iterative algorithm for ductile-fracture calculation is presented. Finally, several numerical examples are shown. Particularly, the fracture processes of a superalloy structure under 800℃ and 900℃ environments are simulated and compared with experimental results. Our comparisons show that the crack modes captured by the proposed model are similar to experimental observations, which verifies the validity of the proposed model.
Keywords
Peridynamics; Thermoelastic Coupling; Plastic Deformation; Fracture Simulation.
Subject
Engineering, Mechanical Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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