Benjamin Kaiser

A generalised interface for multi-level coupling of beam unit cell meso-models to macro finite elements in draping simulation


Front	Back

ISBN:

978-3-8440-7571-7

Series:

Schriftenreihe des Fachgebiets für Computational Mechanics
Herausgeber: Prof. Dr.-Ing. Fabian Duddeck
München

Volume:

Keywords:

Textile composites; Woven fabrics; Draping simulation; Fibre interaction; Non-orthogonal unit cells; Beam based unit cells; Coupled multi-scale models; FE²; Auxetic bistable material; Non-linear homogenisation; Multi-level simulation

Type of publication:

Thesis

Language:

English

Pages:

194 pages

Figures:

96 figures

Weight:

288 g

Format:

21 x 14,8 cm

Bindung:

Paperback

Price:

48,80 € / 61,10 SFr

Published:

September 2020

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Abstract:

A generalized interface for coupling a unit cell model to a macroscopic finite element is presented in this work enabling macro-scale predictions of mechanical behavior of materials with inner structure like woven fabrics. The unit cell represents the inner structure of the real fabric via 1D finite elements (beams / bars). The coupled unit cell model can improve the macro finite element simulation in terms of calculation time and modeling effort, because the major characteristics are described in detail by the unit cell without using full-scale models.

Diese Arbeit stellt eine verallgemeinerte Schnittstelle für die Kopplung von Einheitszellen zu einem makroskopischen Finiten Element vor, um das mechanische Verhalten von Werkstoffen mit innerer Struktur, wie Geweben, auf der Makroskala vorherzusagen. Die Einheitszelle repräsentiert die innere Struktur mit 1D Finiten Elementen (Balken / Stäbe). Mit dieser Einheitszelle kann die Rechenzeit der Makro Finite Element Simulation und der Modellierungsaufwand verringert werden, da Hauptcharakteristiken des Gewebes abgebildet werden, ohne ein komplettes Modell zu erstellen.