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A Nonlocal Lattice Particle Framework for Modeling of Solids

[+] Author Affiliations
Hailong Chen

Idaho National Laboratory, Idaho Falls, ID

Yongming Liu

Arizona State University, Tempe, AZ

Paper No. IMECE2016-65557, pp. V001T03A001; 5 pages
doi:10.1115/IMECE2016-65557
From:
  • ASME 2016 International Mechanical Engineering Congress and Exposition
  • Volume 1: Advances in Aerospace Technology
  • Phoenix, Arizona, USA, November 11–17, 2016
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5051-0
  • Copyright © 2016 by ASME

abstract

In this paper, we present a nonlocal lattice particle framework for modeling the brittle behaviors of both isotropic and anisotropic solid materials. Different from other continuum based models, the formulation of this lattice particle model is discrete and there is no spatial derivative involved. This avoids the singularity issues of discontinuous problems, which commonly exists in continuum based models. The model is also nonlocal that a discrete element can interacts with its neighbors up to certain distance. This nonlocality better solves some issues in other discrete models, such as fixed range of Poisson’s ratio. The modeling capability and accuracy are demonstrated using numerical examples.

Copyright © 2016 by ASME

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