Lightweight design of automobile seat frame based on multiple working conditions
NI Wei-yu1, ZHANG Heng2, YAO Sheng-wei1
1.Public Experiment Center, University of Shanghai for Science and Technology, Shanghai 200093, China 2.School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
Abstract The static tension condition of safety belt and the dynamic collision condition of luggage compartment are two important conditions in the automobile seat safety regulations. On the premise of meeting the requirements of safety regulations, in order to realize the lightweight design for automobile seats, a lightweight design method of seat frame based on multiple working conditions was proposed. Taking the automobile seat safety regulations as the design criteria and taking the minimum mass of seat frame as the design objective, the size of key components of the seat frame was optimized by comprehensively considering the static and dynamic working conditions. Firstly, the finite element model of the seat frame was established, and the sensitivity analysis was carried out with the seat frame mass as the response, and the design variables for the size optimization of key components of the seat frame were determined; then, the mathematical model of size optimization of key components of the seat frame was established, and the lightweight design for the seat frame was realized; finally, the finite element simulation analysis and experimental research for the optimized seat under the static and dynamic conditions were carried out to verify the correctness of the optimization results. The results showed that compared with the original seat, the weight of the optimized seat was reduced by 7.89% on the premise of meeting the requirements of safety regulations, which verified the effectiveness of the proposed lightweight design method. The research results can provide reference for the safety analysis and lightweight design of automobile seats, which have important engineering practical value.
Received: 07 April 2021
Published: 28 December 2021
NI Wei-yu, ZHANG Heng, YAO Sheng-wei. Lightweight design of automobile seat frame based on multiple working conditions. Chinese Journal of Engineering Design, 2021, 28(6): 729-736.