|Table of Contents|

Application of Pareto optimality in crashworthiness of honeycomb structure crash box

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2016年05期
Page:
599-
Research Field:
Publishing date:

Info

Title:
Application of Pareto optimality in crashworthiness of honeycomb structure crash box
Author(s):
Wang Zongqian1Qian Mingjun2Zhou Yunbo1Tian Dali3Zhang Xinlei1
1.School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China; 2.The 63969 Troops of the Chinese People's Liberation Army,Nanjing 210028,China; 3.Tianjin Automotive Test Center,China Automotive Technology and Resea
Keywords:
low-speed collision honeycomb structures Pareto optimality multi-objective genetic algorithm normal-boundary intersection method
PACS:
U463
DOI:
10.14177/j.cnki.32-1397n.2016.40.05.016
Abstract:
In order to improve the vehicle crashworthiness under low-speed(usually less than 15 km/h)collision conditions,a new crash box with the aluminum honeycomb structure is proposed here.A finite element model for the low-speed collision analysisis is set up and the analysis is carried out by using the LS-DYNA.By choosing the thickness and the shape of the aluminum honeycomb crash box structure as design parameters,the mathematical optimization model is established.The multi-objective genetic algorithm and the Pareto optimality theory are applied to obtain the Pareto solution set,then the normal-boundary intersection method is used to find the optimal design scheme.Compared with the traditional structure,the new structure can improve the performance of the vehicle under the low-speed impact condition without gaining much more weight.

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Last Update: 2016-10-30