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Data Driven Computing with noisy material data sets.

Authors :
Kirchdoerfer, T.
Ortiz, M.
Source :
Computer Methods in Applied Mechanics & Engineering. Nov2017, Vol. 326, p622-641. 20p.
Publication Year :
2017

Abstract

We formulate a Data Driven Computing paradigm, termed max-ent Data Driven Computing, that generalizes distance-minimizing Data Driven Computing and is robust with respect to outliers. Robustness is achieved by means of clustering analysis. Specifically, we assign data points a variable relevance depending on distance to the solution and on maximum-entropy estimation. The resulting scheme consists of the minimization of a suitably-defined free energy over phase space subject to compatibility and equilibrium constraints. Distance-minimizing Data Driven schemes are recovered in the limit of zero temperature. We present selected numerical tests that establish the convergence properties of the max-ent Data Driven solvers and solutions. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00457825
Volume :
326
Database :
Academic Search Index
Journal :
Computer Methods in Applied Mechanics & Engineering
Publication Type :
Academic Journal
Accession number :
125546210
Full Text :
https://doi.org/10.1016/j.cma.2017.07.039