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Paper detail

The Hellan-Herrmann-Johnson Method for Nonlinear Shells

In this paper we derive a new finite element method for nonlinear shells. The Hellan-Herrmann-Johnson (HHJ) method is a mixed finite element method for fourth order Kirchhoff plates. It uses convenient Lagrangian finite elements for the vertical deflection, and introduces sophisticated finite elements for the moment tensor. In this work we present a generalization of this method to nonlinear shells, where we allow finite strains and large rotations. The geometric interpretation of degrees of freedom allows a straight forward discretization of structures with kinks. The performance of the proposed elements is demonstrated by means of several established benchmark examples.

preprint2019arXivOpen access
Michael NeunteufelJoachim Schöberl
math.NA
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Michael NeunteufelJoachim Schöberl

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