Simulation of elastoplastic deformation of isotropic material using a nonlocal yield criterion and lattice particle model

Haoyang Wei, Yongming Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A nonlocal yield criterion for Lattice Particle Model (LPM) is proposed to model the elastoplastic deformation of isotropic materials in this paper. Some basic concepts about LPM are reviewed and detailed derivation are provided. Analytical solution for the local and nonlocal coefficients in the LPM can be obtained. Implicit method combined with force incremental force method is adopted to simulate elastoplastic deformation for isotropic materials. 3D uniaxial tensile test, multiaxial tensile test, and shearing test of specimens with various geometries are simulated using the proposed nonlocal yield criterion with LPM in 3D using simple cubic packing pattern. By comparing LPM simulation results and ABAQUS simulation results, good accuracy has been verified for the LPM method to predict elastoplastic deformation of isotropic materials.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
StatePublished - 2019
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: Jan 7 2019Jan 11 2019

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
CountryUnited States
CitySan Diego
Period1/7/191/11/19

ASJC Scopus subject areas

  • Aerospace Engineering

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  • Cite this

    Wei, H., & Liu, Y. (2019). Simulation of elastoplastic deformation of isotropic material using a nonlocal yield criterion and lattice particle model. In AIAA Scitech 2019 Forum (AIAA Scitech 2019 Forum). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2019-0964