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Axial Crushing of Thin-Walled Columns with Octagonal Section: Modeling and Design

Liu, Yucheng / Day, Michael L.

This chapter focus on numerical crashworthiness analysis of straight thinwalled columns with octagonal cross sections. Two important issues in this analysis are demonstrated here: computer modeling and crashworthiness design. In the first part, this chapter introduces a method of developing simplified finite element (FE) models for the straight thin-walled octagonal columns, which can be used for the numerical crashworthiness analysis. Next, this chapter performs a crashworthiness design for such thin-walled columns in order to maximize their energy absorption capability. Specific energy absorption (SEA) is set as the design objective, side length of the octagonal cross section and wall thickness are selected as design variables, and maximum crushing force (P_m ) occurs during crashes is set as design constraint. Response surface method (RSM) is employed to formulate functions for both SEA and P_m .

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Axial Crushing of Thin-Walled Columns with Octagonal Section: Modeling and Design

Liu, Yucheng / Day, Michael L.

This chapter focus on numerical crashworthiness analysis of straight thinwalled columns with octagonal cross sections. Two important issues in this analysis are demonstrated here: computer modeling and crashworthiness design. In the first part, this chapter introduces a method of developing simplified finite element (FE) models for the straight thin-walled octagonal columns, which can be used for the numerical crashworthiness analysis. Next, this chapter performs a crashworthiness design for such thin-walled columns in order to maximize their energy absorption capability. Specific energy absorption (SEA) is set as the design objective, side length of the octagonal cross section and wall thickness are selected as design variables, and maximum crushing force (P_m ) occurs during crashes is set as design constraint. Response surface method (RSM) is employed to formulate functions for both SEA and P_m .

Axial Crushing of Thin-Walled Columns with Octagonal Section: Modeling and Design

Liu, Yucheng / Day, Michael L.

This chapter focus on numerical crashworthiness analysis of straight thinwalled columns with octagonal cross sections. Two important issues in this analysis are demonstrated here: computer modeling and crashworthiness design. In the first part, this chapter introduces a method of developing simplified finite element (FE) models for the straight thin-walled octagonal columns, which can be used for the numerical crashworthiness analysis. Next, this chapter performs a crashworthiness design for such thin-walled columns in order to maximize their energy absorption capability. Specific energy absorption (SEA) is set as the design objective, side length of the octagonal cross section and wall thickness are selected as design variables, and maximum crushing force (P_m ) occurs during crashes is set as design constraint. Response surface method (RSM) is employed to formulate functions for both SEA and P_m .

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Title:

Axial Crushing of Thin-Walled Columns with Octagonal Section: Modeling and Design

Contributors:

Liu, Yucheng (author) / Day, Michael L. (author)

Published in:

Advances in Computational Algorithms and Data Analysis ; 365-379

Lecture Notes in Electrical Engineering ; 14

Publication date:

2009

Size:

15 Seiten

ISBN:

978-1-4020-8919-0 , 978-1-4020-8918-3

ISSN:

DOI:

https://doi.org/10.1007/978-1-4020-8919-0_25

Type of media:

Article/Chapter (Book)

Type of material:

Print

Language:

English

Keywords:

Energieabsorption , Oberflächentechnik , Teilstück , Finite-Elemente-Methode , Wanddicke , Computer-Modell , Design-Bedingung , Variable , Response-Surface-Methode

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