An analysis method for optimizing the vibration quantity of the intermediate support of a transmission shaft when an automobile starts

Abstract

The invention relates to the technical field of power transmission, in particular to an analysis method for optimizing the vibration quantity of the intermediate support of a transmission shaft when an automobile starts. The transmission shaft comprises a front axle tube, a rear axle tube, an intermediate support and a cross axle. The method comprises the steps of building parametric transmissionshaft many-body dynamic mode; performing natural frequency analysis of the transmission shaft model and benchmarking analysis. In the forced vibration analysis of the transmission shaft model, the design parameters of the transmission shaft are frozen if the vibration quantity of the intermediate support of the transmission shaft meets the requirements when the resonance occurs, otherwise the design parameters of the transmission shaft are optimized and matched until the vibration quantity of the intermediate support of the transmission shaft meets the requirements when the resonance occurs. As the key parameters such as the stiffness of the intermediate support of the transmission shaft, the phase angle of the cross shaft, the position of the cross shaft and the like are optimized and matched, the vibration of the intermediate support occurring when the automobile starts can be effectively reduced, the shortcomings of the traditional method of time-consuming and high cost are avoided,the development cycle is effectively shortened, and the development cost is reduced.

Description

technical field [0001] The invention relates to the technical field of power transmission, in particular to an analysis method for optimizing the vibration of the transmission shaft intermediate support when the vehicle starts. Background technique [0002] With the progress of society and the continuous improvement of people's living standards, people's requirements for the comfort of cars are getting higher and higher. Car ride comfort refers to the degree of adaptation of passengers to the vibration of the driving vehicle, which has become a more important evaluation index for the overall performance of modern cars. For a car with good comfort, drivers and members are not likely to feel fatigued, which contributes to driving safety and better performance of the car's dynamic performance; on the contrary, a car with poor comfort will generate a large dynamic load, which will accelerate the wear of parts , reducing the reliability and service life of the car. [0003] As ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art, and provide an analysis method for optimizing the vibration of the transmission shaft intermediate support when the car starts. The natural frequency analysis and forced vibration analysis are carried out. By optimizing and matching the key parameters such as the stiffness of the transmission shaft intermediate support, the phase angle of the cross shaft and the position of the cross shaft, the vibration of the intermediate support when the car starts can be effectively reduced, avoiding the traditional method of consumption. The shortcomings of high time and cost effectively shorten the development cycle and reduce development costs

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