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Formulation, analysis and computation of an optimization-based local-to-nonlocal coupling method

Journal Article · · Results in Applied Mathematics
 [1];  [2]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States). Computational Science and Analysis
  2. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States). Center for Computing Research

In this paper, we present an optimization-based coupling method for local and nonlocal continuum models. Our approach couches the coupling of the models into a control problem where the states are the solutions of the nonlocal and local equations, the objective is to minimize their mismatch on the overlap of the local and nonlocal problem domains, and the virtual controls are the nonlocal volume constraint and the local boundary condition. We present the method in the context of Local-to-Nonlocal di usion coupling. Numerical examples illustrate the theoretical properties of the approach.

Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR); Collaboratory on Mathematics for Mesoscopic Modeling of Materials (CM4)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1429632
Alternate ID(s):
OSTI ID: 1686215
Report Number(s):
SAND--2017-1029J; 650860
Journal Information:
Results in Applied Mathematics, Journal Name: Results in Applied Mathematics Journal Issue: C Vol. 9; ISSN 2590-0374
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (1)

A space-time discretization of a nonlinear peridynamic model on a 2D lamina journal June 2022