Spline‐ and hp‐basis functions of higher differentiability in the finite cell method

Stefan Kollmannsberger, Davide D’Angella, Ernst Rank, Alexander Düster, Simeon Hubrich, Paolo Di Stolfo, Andreas Schröder

Publikation: Beitrag in FachzeitschriftArtikel

Abstract

In this paper, the use of hp-basis functions with higher differentiability properties is discussed in the context of the finite cell method and numerical simulations on complex geometries. For this purpose, C k hp-basis functions based on classical B-splines and a new approach for the construction of C 1 hp-basis functions with minimal local support are introduced. Both approaches allow for hanging nodes, whereas the new C 1 approach also includes varying polynomial degrees. The properties of the hp-basis functions are studied in several numerical experiments, in which a linear elastic problem with some singularities is discretized with adaptive refinements. Furthermore, the application of the C k hp-basis functions based on B-splines is investigated in the context of nonlinear material models, namely hyperelasticity and elastoplasicity with finite strains.

OriginalspracheEnglisch
Aufsatznummere202000004
FachzeitschriftGAMM Mitteilungen
DOIs
PublikationsstatusVeröffentlicht - 1 Jan 2019

Systematik der Wissenschaftszweige 2012

  • 101 Mathematik

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