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Review copy

45,80 €
ISBN 978-3-8440-6736-1
Softcover
152 pages
60 figures
224 g
21 x 14,8 cm
English
Thesis

June 2019

Duo Zeng

Enhanced Hybrid Cellular Automata Method for Crashworthiness Topology Optimization of Thin-walled Structures

The optimization of structures is of great importance for automotive crashworthiness because lightweight design leads to energy savings and reduction of emissions together with assured safety levels. Hybrid Cellular Automata (HCA) is an attractive candidate solution due to their gradient-free design update, fast development of the structure, and ability to handle a large number of design variables without significant increase in numerical effort. This thesis proposes an improved HCA for crash optimization regarding each thin wall as a single cell in contrast to most of the existing approaches where each finite element is considered as cell. Besides algorithmic developments improving convergence and efficiency, adaptations are realized to analyze the influence of more realistic material models (plasticity and failure) and first steps towards crash topology optimization for additive manufacturing structures are shown.

Keywords: Topology optimization; Crashworthiness; Thin-walled structures; Hybrid cellular automata

Schriftenreihe des Fachgebiets für Computational Mechanics

Edited by Prof. Dr.-Ing. Fabian Duddeck, München

Volume 9

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