Vibration Analysis And Simulation Optimization Of 5MTT155 Gearbox

The gearbox is the transmission hub of the whole car,which is responsible for transferring the power of the engine to four wheels so that the car can drive normally.Therefore,the performance of the gearbox directly affects the smoothness and comfort of driving.With the development of economy and the improvement of living standards,people pay more and more attention to the car driving comfort,therefore,in view of the gearbox vibration analysis and simulation optimization has very important practical significance.In this paper,the vibration analysis and simulation optimization of gearboxes are taken as the research direction,and a large number of literatures on the development status and trends of gearbox research at home and abroad have been read out,and the 5MTT155 gearbox has been briefly introduced.At first,this paper analyzes the causes of vibration and gear system is mainly studied the unique internal incentives,on this basis,the model of gearbox vibration model is established,a mathematical formula to model is obtained,the dynamics equations of list them.Using ANSYS to perform modal analysis on the finite element models of gears and shells and their response.Based on vibration analysis,establish its overall simulation model and optimize design.MASTA software is used to establish the geometric model of the transmission part,and the parameter file of the transmission housing is extracted from ANSYS and imported into MASTA to complete the overall modeling of the gearbox;Define the power flow of the system and analyze the model to see if it is working properly;Defining the load spectrum,analyzing the deformation of the model,and obtaining the reference standards for the strength of shafts and gears;Dynamic simulation of the model is carried out to analyze the system's modal and gear noise,and its inherent characteristics and vibration response are obtained.On this basis,the model is optimized from both macro and micro aspects,which reduces the dynamic excitation of gears and reduces vibration and noise.