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Structural and Multidisciplinary Optimization

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23.08.2017 | RESEARCH PAPER

Crashworthiness analysis and multi-objective design optimization of a novel lotus root filled tube (LFT)

verfasst von: Zhuo Li, Libin Duan, Tao Chen, Zhaohui Hu

Erschienen in: Structural and Multidisciplinary Optimization | Ausgabe 2/2018

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Abstract

The purpose of this paper is to propose a novel lotus root filled tube (LFT) for improving the energy absorption capability of crash box under axial impact loading. The LFT consists of a lotus root like core and a basic tube (BT). Firstly, a finite element (FE) model of the LFT is established. Secondly, the FE model is used to study the energy absorption capability of LFT with variations in the thickness of square tube (t ₁), the thickness of lotus root like core (t ₂), the height of the cell structure (h), as well as the length of the cell structure (l ₁ , l ₂). Finally, to determine the optimal geometric parameters, multiobjective design optimization (MDO) is performed by integrating optimal Latin hypercube sampling (OLHD), response surface method (RSM) and non-dominated sorting genetic algorithm-II (NSGA-II). The results have demonstrated that the proposed LFT has great energy absorption efficiency and is able to improve vehicle crash performance under frontal impact loading.

Vorheriger Artikel Porous structure design through Blinn transformation-based level set method

Nächster Artikel A modified rotation strategy for directed search domain algorithm in multiobjective engineering optimization

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Titel: Crashworthiness analysis and multi-objective design optimization of a novel lotus root filled tube (LFT)
verfasst von: Zhuo Li
Libin Duan
Tao Chen
Zhaohui Hu
Publikationsdatum: 23.08.2017
Verlag: Springer Berlin Heidelberg
Erschienen in: Structural and Multidisciplinary Optimization / Ausgabe 2/2018
Print ISSN: 1615-147X
Elektronische ISSN: 1615-1488
DOI: https://doi.org/10.1007/s00158-017-1782-5

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