Research on Lightweight Rail Vehicle Body Based on Sensitivity Analysis

Jian Yin; Qingchao Zhang; Xianglong Li; Yaoyao Zhu; Ziyuan Liu; Yu Liu; Zhihua Sha

doi:10.5614/j.eng.technol.sci.2024.56.3.4

Authors

Jian Yin School of Mechanical Engineering, Dalian Jiaotong University, No. 794 Huanghe Road, Shahekou, Dalian and 116028, China , China
Qingchao Zhang School of Mechanical Engineering, Dalian Jiaotong University, No. 794 Huanghe Road, Shahekou, Dalian and 116028, China , China
Xianglong Li School of Mechanical Engineering, Dalian Jiaotong University, No. 794 Huanghe Road, Shahekou, Dalian and 116028, China , China
Yaoyao Zhu Nanjing Metro, No.228 Zhongshan Road, Xuanwu, Nanjing and 210018, China, China
Ziyuan Liu School of Mechanical Engineering, Dalian Jiaotong University, No. 794 Huanghe Road, Shahekou, Dalian and 116028, China , China
Yu Liu
liuyu_ly12@126.com
School of Mechanical Engineering, Dalian Jiaotong University, No. 794 Huanghe Road, Shahekou, Dalian and 116028, China , China
Zhihua Sha School of Mechanical Engineering, Dalian Jiaotong University, No. 794 Huanghe Road, Shahekou, Dalian and 116028, China , China

Vol. 56 No. 3 (2024)

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Published June 19, 2024

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In view of the development trend of rail vehicles towards higher operating speed and low power consumption, a scheme for a lightweight rail vehicle body is proposed, based on sensitivity analysis. Using topology optimization of the vehicle body section structure, finite element models of the vehicle body section structure under single working conditions and multiple working conditions were established, respectively, and the force transmission path of the vehicle body structure under different working conditions was obtained under different working conditions. The topology of the cross-sectional structure of the vehicle body was optimized by the compromise planning method with weights. Then, a reconstruction and performance analysis of the car body section was carried out based on the optimization results and finally the finite difference method was used to analyze the sensitivity of the vehicle body structure and the vehicle body size was optimized based on the sensitivity analysis results. The results showed that the weight reduction rate of the railway vehicle body section stiffened plate was 4.47% compared to the optimization period and the modal performance analysis results of the optimized structure met the requirements. The weight reduction ratio of the optimized body structure was 21.6%

Yin, J., Zhang, Q., Li, X., Zhu, Y., Liu, Z., Liu, Y., & Sha, Z. (2024). Research on Lightweight Rail Vehicle Body Based on Sensitivity Analysis. Journal of Engineering and Technological Sciences, 56(3), 353–366. https://doi.org/10.5614/j.eng.technol.sci.2024.56.3.4

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