Simulation accuracy analysis and optimization based on the new roof crush regulation

doi:10.16731/j.cnki.1671-3133.2018.04.006

Modern Manufacturing Engineering ›› 2018, Vol. 451 ›› Issue (4): 28-33.doi: 10.16731/j.cnki.1671-3133.2018.04.006

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Simulation accuracy analysis and optimization based on the new roof crush regulation

Li Jian¹, Fang Xiangdong², Chen Ziming¹, Xu Xiaoxu², Liu Zhiwen¹, Li Luoxing¹

1 State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, China;
2 Commercial Vehicle Institute of Changan Automotive Co.Ltd., Chongqing 400020, China

Received:2017-02-28 Online:2018-04-20 Published:2018-07-18

Abstract

Abstract: It is widely accepted that the poor simulation accuracy of the roof crush is failed to guide the new car exploitation and to deal with the problems in satisfying the modified regulation.Focused on the simulation accuracy of roof crush and optimization, firstly, it was proposed to concern the rupture failure of the windshield to precisely simulate the deformation mode of the roof under crush.Then, the effect of loading velocity on the accuracy of the simulation has been studied, meanwhile, the proper speed was decided according to the minimum modal frequency, which resulted in an excellent progress in the efficiency of the simulation.Finally, the structure of the main bearing components was optimized by the way of load transfer path, with consideration of materials choice and materials distribution of the main components, the modified scheme satisfied the requirements of the latest regulation with a minor weight increase of 3.16 kg.

Key words: roof crush, simulation accuracy, windshield failure, loading velocity, structure optimization

CLC Number:

U463.82

Li Jian, Fang Xiangdong, Chen Ziming, Xu Xiaoxu, Liu Zhiwen, Li Luoxing. Simulation accuracy analysis and optimization based on the new roof crush regulation[J]. Modern Manufacturing Engineering, 2018, 451(4): 28-33.

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Simulation accuracy analysis and optimization based on the new roof crush regulation

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