Hourglassing‐ and locking‐free mesh distortion insensitive Petrov–Galerkin EAS element for large deformation solid mechanics

We present a novel geometrically nonlinear EAS element with several desirable features. First, a Petrov–Galerkin ansatz significantly improves the element's performance in distorted meshes without loosing the simple strain‐driven format. Second, the recently proposed mixed integration point str...

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Veröffentlicht in:	International journal for numerical methods in engineering 2023-03, Vol.124 (6), p.1307-1343
Hauptverfasser:	Pfefferkorn, Robin, Betsch, Peter
Format:	Artikel
Sprache:	eng
Schlagworte:	Deformation Distortion enhanced assumed strain (EAS) Galerkin method hourglassing instabilities Locking mixed finite elements mixed integration point Petrov–Galerkin Robustness (mathematics) Solid mechanics unsymmetric finite element method
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