The Research of Vibration Analysis and Optimal Design on Electric Vehicle Drive System
Date Issued
2015
Date
2015
Author(s)
Ho, Cheng-Han
Abstract
This thesis studies the vibration influences on the whole drive system of vehicle for HAITEC/CECTEC’s EV car and proposes an optimal design which can reduce vibration. From literature review, this study summarizes the sources of vibration. Then this thesis uses finite element software: Abaqus to create whole model of the electric vehicle drive system. The accuracy of the finite element model is confirmed by the experiment of modal testing. The model is created by both solid and shell elements which is well meshed, so it has better quality and lower quantity of mesh elements, which can not only keep the precision of analysis but also decrease software simulation time. This thesis investigates and simulates two main sources of vibrations: rotor’s unbalance rotating mass and gear meshing during vibration analysis, then explores the importance between each reason and vibration of the whole drive system. At last, this thesis proposes a new optimal design which can lower 19.9% of vibration displacement by improving vibration sources and enhancing the stiffness of structure.
Subjects
vibration
finite element
EV car
gearbox
gear meshing
rotor unbalance
Type
thesis
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