Title: Strength analysis of vehicle body skeleton structure based on finite element model

Authors: Hui Wang; Cheng Yang

Addresses: School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China ' School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China

Abstract: In order to overcome the problems of low identification rate and accuracy, as well as long analysis time in traditional methods of automobile body structure strength analysis, a strength analysis method of vehicle body skeleton structure based on finite element model is proposed. Determine the vehicle coordinate system and build a vehicle dynamics model, and use the Kalman filtering method to identify the structural parameters of the vehicle body skeleton. Build a finite element model of the automotive body skeleton structure through discretisation and element analysis. Obtain the strength analysis results of the car body skeleton structure by calculating the yield limit of the car body skeleton structure. Experimental results show that the average identification rate of the proposed method for automobile body structure parameters is 97.74%, the maximum accuracy of the strength analysis of the automobile body structure is 97.3%, and the average analysis time is 65.28 ms.

Keywords: finite element model; vehicle body; skeleton structure strength; kinematic model of the vehicle; Kalman filter; yield limit.

DOI: 10.1504/IJMPT.2024.143245

International Journal of Materials and Product Technology, 2024 Vol.68 No.3/4, pp.215 - 229

Received: 21 Nov 2023
Accepted: 28 Feb 2024
Published online: 11 Dec 2024 *

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