Design optimization of regular hexagonal thin-walled columns with crashworthiness criteria

Authors:
Shujuan Hou;Qing Li;Shuyao Long;Xujing Yang;Wei Li
Affiliations:
State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha, Hunan 410082, China;School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia;Department of Engineering Mechanics, Hunan University, Changsha, Hunan 410082, PR China;State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha, Hunan 410082, China;School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia
Venue:
Finite Elements in Analysis and Design
Year:
2007

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Abstract

New functional requirements stimulate a rapid development of novel structural members. This paper presents a crashworthiness design of the regular hexagonal thin-walled columns for different sectional profiles. To formulate the complex crashworthiness design problem, the surrogate model method, more specifically, the response surface method (RSM), is utilized. The design of experiments (DoE) of the factorial design and D-optimal criterion techniques is employed to construct the response surface (RS) for the objective of specific energy absorption (SEA) and the constraint of maximum peak load (Max PL), respectively. In this study, the singly celled and multiply celled hexagonal columns are taken into account with the different sectional configurations. A comparison is made between these different hexagonal profiles, and the crashworthiness merits of multiply connected (MC) sections of the singly celled configuration and the side-connected section of triply celled configuration are quantified.