Abstract
The correspondence approach is a powerful technique that permits the usage of standard constitutive models from local theory within a peridynamic formulation. However, the conventional correspondence formulation suffers from material instability, ie, zero-energy modes, which must be controlled for it to be applied in practice. The recently-introduced correspondence reformulation based on the use of a bond-associated deformation gradient can inherently remove the material instability. In this paper, we show how the bond-associated correspondence model satisfies the requirement for material stability. The convergence behavior is also examined. The accuracy of this approach is further demonstrated by comparing model predictions against local reference solutions and results from the conventional correspondence model with penalty stabilization for both two-dimensional and three-dimensional problems.
Original language | English |
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Pages (from-to) | 713-727 |
Number of pages | 15 |
Journal | International Journal for Numerical Methods in Engineering |
Volume | 117 |
Issue number | 6 |
DOIs | |
State | Published - Feb 10 2019 |
Bibliographical note
Publisher Copyright:Published 2018. This article is a U.S. Government work and is in the public domain in the USA.
Keywords
- Peridynamics
- bond-associated deformation gradient
- correspondence model
- material instability
- zero-energy modes
ASJC Scopus subject areas
- Numerical Analysis
- General Engineering
- Applied Mathematics