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Integrating Peridynamics with Material Point Method for Elastoplastic Material Modeling

  • Yao LyuEmail author
  • Jinglu Zhang
  • Jian Chang
  • Shihui Guo
  • Jian Jun Zhang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11542)

Abstract

We present a novel integral-based Material Point Method (MPM) using state based peridynamics structure for modeling elastoplastic material and fracture animation. Previous partial derivative based MPM studies face challenges of underlying instability issues of particle distribution and the complexity of modeling discontinuities. To alleviate these problems, we integrate the strain metric in the basic elastic constitutive model by using material point truss structure, which outweighs differential-based methods in both accuracy and stability. To model plasticity, we incorporate our constitutive model with deviatoric flow theory and a simple yield function. It is straightforward to handle the problem of cracking in our hybrid framework. Our method adopts two time integration ways to update crack interface and fracture inner parts, which overcome the unnecessary grid duplication. Our work can create a wide range of material phenomenon including elasticity, plasticity, and fracture. Our framework provides an attractive method for producing elastoplastic materials and fracture with visual realism and high stability.

Keywords

Material Point Method Peridynamics Elastoplastic modeling 

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Yao Lyu
    • 1
    Email author
  • Jinglu Zhang
    • 1
  • Jian Chang
    • 1
  • Shihui Guo
    • 2
  • Jian Jun Zhang
    • 1
  1. 1.National Centre for Computer AnimationBournemouth UniversityPooleUK
  2. 2.School of SoftwareXiamen UniversityXiamenChina

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