Simulation Design Of Anti-vibration Performance Of High-speed Test Stand For New Energy Vehicle Reducer

This paper researches and designs the high-speed tester for new energy vehicle reducer,which is designed and developed for the comprehensive test of high-speed reducer.Aiming at the vibration problems of the high-speed test bench,this paper analyzes and studies the overall design of the test bench,rotor dynamics,structural dynamics,and modal tests.In order to do a sufficient force theoretical analysis in the early stage of the test bench’s work,it is used for subsequent tests The foundation of the normal work of Taiwan is laid.The main research work of this paper is as follows:Firstly,by comparing different structure test benches,analyze the advantages and disadvantages of different structure test benches,then determine the structure of the test bench,at the same time,perform dynamic modeling of the test bench,analyze the vibration source of the test bench,and reduce the vibration of the test bench It is found that reducing the excitation force and avoiding the natural frequency of the test bench,in addition to using a passive vibration isolation system for the test bench,minimize the vibration of the test bench.The dynamic analysis of the rotor of the important parts of the test bench,the dynamic modeling of the rotor’s wobble,and the use of ROMAX software to analyze the dynamic imbalance of the high-speed spindle on the high-speed spindle,verify that the rotor dynamic imbalance level G2.5 meets the high speed The spindle design requirements,and the finite element analysis software was used to determine the highspeed spindle as a rigid rotor and the critical speed of the rotor.In addition,torsional vibration modeling of the entire drive shaft system of the test bench was performed to verify the inertia matching of the test bench Does not produce large torsional vibration.The experimental platform was modeled in three dimensions.The finite element analysis software was used to perform a modal analysis on the high-speed drive end and the test platform as a whole.According to the modal analysis results,the natural frequency is within the excitation frequency,so it is determined according to the dynamic imbalance level.The magnitude of the excitation force is then analyzed for the harmonic response of the test bench.According to the results of the harmonic response analysis,it can be obtained that although the natural frequency is within the excitation frequency,it meets the requirements of the test bench for the use of vibration speed.Finally,the experimental platform is constructed in kind.Before running the test bench,in order to verify the accuracy of the finite element analysis results,the test modal was performed on the test bench.According to the comparison between the test modal and the finite element analysis modal results,the natural frequencies were close and the mode shapes were the same.Therefore,the finite element analysis results have certain credibility.