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The bond-based peridynamic system with Dirichlet-type volume constraint

Published online by Cambridge University Press:  30 January 2014

Tadele Mengesha
Affiliation:
Department of Mathematics, Pennsylvania State University, University Park, PA 16802, USA (mengesha@math.psu.edu; qdu@math.psu.edu)
Qiang Du
Affiliation:
Department of Mathematics, Pennsylvania State University, University Park, PA 16802, USA (mengesha@math.psu.edu; qdu@math.psu.edu)

Abstract

In this paper, the bond-based peridynamic system is analysed as a non-local boundary-value problem with volume constraint. The study extends earlier works in the literature on non-local diffusion and non-local peridynamic models, to include non-positive definite kernels. We prove the well-posedness of both linear and nonlinear variational problems with volume constraints. The analysis is based on some non-local Poincaré-type inequalities and the compactness of the associated non-local operators. It also offers careful characterizations of the associated solution spaces, such as compact embedding, separability and completeness. In the limit of vanishing non-locality, the convergence of the peridynamic system to the classical Navier equations of elasticity with Poisson ratio ¼ is demonstrated.

Type
Research Article
Copyright
Copyright © Royal Society of Edinburgh 2014 

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