Bilayer Plates: Model Reduction, Γ-Convergent Finite Element Approximation and Discrete Gradient Flow

2015/06/10 by Söeren Bartels, Andrea Bonito, Bartels, Söeren +3 · 1 citation
Biochemistry, Genetics and Molecular Biology · Engineering · #65N12 #65N30 #Advanced Numerical Analysis Techniques #Cellular Mechanics and Interactions #Elasticity and Material Modeling #FOS: Mathematics #Numerical Analysis (math.NA)

paper · pdf · doi:10.48550/arxiv.1506.03335

openalex publication_date 2015/06/10 · openalex created_date 2022/09/11 · openalex updated_date 2026/07/28

Abstract

The bending of bilayer plates is a mechanism which allows for large deformations via small externally induced lattice mismatches of the underlying materials. Its mathematical modeling, discussed herein, consists of a nonlinear fourth order problem with a pointwise isometry constraint. A discretization based on Kirchhoff quadrilaterals is devised and its Γ-convergence is proved. An iterative method that decreases the energy is proposed and its convergence to stationary configurations is investigated. Its performance, as well as reduced model capabilities, are explored via several insightful numerical experiments involving large (geometrically nonlinear) deformations.

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