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Proceedings Paper

Global sensitivity analysis for a quantum informed ferroelectric phase field model
Author(s): Lider S. Leon; Ralph C. Smith; Wiiliam S. Oates; Paul Miles
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Paper Abstract

We consider global sensitivity analysis (GSA) for correlated parameters in a continuum phase-field model for ferroelectric materials. The model was previously calibrated using density functional theory (DFT) simulations. For single domain ferroelectric lead titanate crystals, GSA is employed to rank the sensitivity of phenomenological parameters governing the Landau energy surface. The sensitivity analysis is based on Sobol’s variance-based decomposition in which the component functions of the high-dimensional representation (HDMR) of the model are computed analytically. For the subset of parameters that are most correlated, high-order component functions and sensitivity indices are found to be significant.

Paper Details

Date Published: 11 April 2017
PDF: 9 pages
Proc. SPIE 10165, Behavior and Mechanics of Multifunctional Materials and Composites 2017, 1016508 (11 April 2017); doi: 10.1117/12.2259945
Show Author Affiliations
Lider S. Leon, North Carolina State Univ. (United States)
Ralph C. Smith, North Carolina State Univ. (United States)
Wiiliam S. Oates, Florida A&M Univ. (United States)
Florida State Univ. (United States)
Paul Miles, Florida A&M Univ. (United States)
Florida State Univ. (United States)


Published in SPIE Proceedings Vol. 10165:
Behavior and Mechanics of Multifunctional Materials and Composites 2017
Nakhiah C. Goulbourne, Editor(s)

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