Lightweight Bus Frame Based on Static Strength and Rollover Safety

被引：0

作者：

Li, Xiaoyan ^{[1
]}

Yu, Haiyan ^{[1
]}

Chu, Zunkang ^{[1
]}

机构：

[1] School of Automotive Studies, Tongji University, Shanghai

来源：

Qiche Gongcheng/Automotive Engineering | 2024年 / 46卷 / 12期

关键词：

contribution level; electric passenger cars; lightweight; sensitivity; size optimization;

D O I：

10.19562/j.chinasae.qcgc.2024.12.007

中图分类号：

学科分类号：

摘要：

In order to adapt to the development of urban electric buses and the needs of national energy conservation and environmental protection policies,a lightweight method for vehicle body structure is proposed in this paper based on sensitivity analysis of the static strength and rollover safety performance of electric buses. Firstly,a finite element model of a certain electric bus is established,and the static strength and rollover safety analysis of the body structure is conducted through the finite element method. Secondly,sensitivity analysis of the static strength and rollover safety of the vehicle body under bending and twisting conditions is conducted on the finite element model. Based on the sensitivity analysis results,the component plate thickness that is beneficial for lightweighting and has little impact on the static strength and rollover safety of the vehicle body is selected as the design variable. The size optimization is carried out with the goal of minimizing the mass of the vehicle body skeleton,and the constraint that the maximum von Mises stress of each material unit does not exceed its material yield strength. The optimization results indicate that the static strength and rollover safety performance of the vehicle body structure meet regulatory requirements,and the weight of the vehicle body frame is reduced by 3.8%. © 2024 SAE-China. All rights reserved.

引用

页码：2200 / 2208

页数：8

共 17 条

[1]

SONG H, DONG M, GU L., Research on efficient suspension vibration reduction configuration for effectively reducing energy consumption, Sustainability, 16, 10, (2024)

[2]

WANG T, DU Y Q, CHEN Y S, Et al., Life cycle assessment of city bus body based on structural lightweighting, Automotive Engineering, 44, 5, pp. 778-788, (2022)

[3]

Review on China’s automotive engineering research progress· 2023, China Journal of Highway and Transport, 36, 11, pp. 1-19, (2023)

[4]

WANG D F, LI S H, XIE C., Crashworthiness optimisation and lightweight for front-end safety parts of automobile body using a hybrid optimisation method[J], International Journal of Crashworthiness, 27, 4, pp. 1193-1204, (2022)

[5]

VIANA-FONS J D, PAYA J., HVAC system operation,consumption and compressor size optimization in urban buses of Mediterranean cities, Energy, 2024

[6]

WU S J, YUAN W, LIANG Z Q, Et al., Lightweight design of a hybrid electric bus frame, Modern Manufacturing Engineering, 2022, 3, pp. 48-53

[7]

YANG R, ZHANG W, LI S, Et al., Finite element analysis and optimization of hydrogen fuel cell city bus body frame structure [J], Applied Sciences, 13, 19, (2023)

[8]

WANG D F, MAO A H, NIU Y Y, Et al., Lightweight multi-objective optimization design for body frame of pure electric large bus based on topology optimization, China Journal of Highway and Transport, 30, 2, pp. 136-143, (2017)

[9]

WANG C, LI M, CHENG A G, Et al., Lightweight design of material-structure for steel-aluminum hybrid cab, Automotive Engineering, 46, 4, pp. 735-744, (2024)

[10]

WANG D, LI S., Lightweight design of a body-in-white structure using a hybrid optimisation approach[J], International Journal of Vehicle Design, 88, 2-3-4, pp. 121-147, (2022)

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