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International Journal of Automotive Technology > Volume 24(4); 2023 > Article
International Journal of Automotive Technology 2023;24(4): 1163-1174.
doi: https://doi.org/10.1007/s12239-023-0095-5
SIMULATION STUDY ON VEHICLE RIDE COMFORT BASED ON FINITE ELEMENT MODEL AND PSEUDO-EXCITATION METHOD
Wenzhu Wang 1, Jie Li 2, Gang Liu 1, Jun Wei 3, Zhenwei Zhang 4
1School of Mechatronics Engineering, Shenyang Aerospace University
2State Key Laboratory of Automotive Simulation and Control, Jilin University
3Project Management Department, Geely Automotive R&D Technology Center
4Chongqing Changan Automobile Co., Ltd.
PDF Links Corresponding Author.  Jie Li  , Email. lj@jlu.edu.cn
ABSTRACT
This research aims to develop a new vehicle ride comfort simulation technology. The basic principle of pseudo-excitation method (PEM) is summarized, and the specific method of PEM is proposed to solve the finite element model (FEM) of vehicle. Taking a simple 7-degree-of-freedom (DOF) car spatial model as an example, the traditional and new methods are compared. Simulation results show that they are completely consistent, thereby verifying the effectiveness of the new method. At the same time, through the simulation process, the new method is simpler and more efficient without deducing complex mathematical formulas and software programming. Finally, the ride comfort simulation of a car’s complex FEM is performed. FEM can consider the parts of the vehicle as elastic bodies and closer to the real vehicle. The PEM transforms random vibration analysis into simple harmonic vibration analysis, which improves the efficiency of the solution greatly. Therefore, the combination of the FEM and the PEM cannot only solve the problem of model accuracy but also the problem of solving efficiency, which has strong practical engineering application value.
Key Words: Ride comfort, Finite element model, Pseudo-excitation method, Harmonic response analysis
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