Hyperelastic analysis based on a polygonal finite element method

Rajagopal A, Kraus M, Steinmann P (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Mechanics of Advanced Materials and Structures Taylor & Francis

Book Volume: 25

Pages Range: 930-942

Journal Issue: 11

DOI: 10.1080/15376494.2017.1329463

Abstract

In this contribution, we present a novel polygonal finite element method applied to hyperelastic analysis. For generating polygonal meshes in a bounded period of time, we use the adaptive Delaunay tessellation (ADT) proposed by Constantinu et al. [1]. ADT is an unstructured hybrid tessellation of a scattered point set that minimally covers the proximal space around each point. In this work, we have extended the ADT to nonconvex domains using concepts from constrained Delaunay triangulation (CDT). The proposed method is thus based on a constrained adaptive Delaunay tessellation (CADT) for the discretization of domains into polygonal regions. We involve the metric coordinate (Malsch) method for obtaining the interpolation over convex and nonconvex domains. For the numerical integration of the Galerkin weak form, we resort to classical Gaussian quadrature based on triangles. Numerical examples of two-dimensional hyperelasticity are considered to demonstrate the advantages of the polygonal finite element method.

Authors with CRIS profile

Paul Steinmann Lehrstuhl für Technische Mechanik (LTM)

Involved external institutions

Indian Institute of Technology Hyderabad IN India (IN)

How to cite

APA:

Rajagopal, A., Kraus, M., & Steinmann, P. (2018). Hyperelastic analysis based on a polygonal finite element method. Mechanics of Advanced Materials and Structures, 25(11), 930-942. https://doi.org/10.1080/15376494.2017.1329463

MLA:

Rajagopal, Amirtham, Markus Kraus, and Paul Steinmann. "Hyperelastic analysis based on a polygonal finite element method." Mechanics of Advanced Materials and Structures 25.11 (2018): 930-942.

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