某客車新型復(fù)合式空氣懸架設(shè)計及其性能優(yōu)化研究
[Abstract]:With the accumulation of automobile industry technology, more and more attention has been paid to the maneuverability and ride comfort of automobile. In the process of vehicle development, a variety of virtual prototyping technologies are also introduced to improve the performance of the vehicle development. However, the reality is that China still maintains a large number of traditional suspension structures in the field of passenger cars. Due to the obsolete suspension technology and weak capability of performance development, the ride comfort of traditional passenger cars cannot meet the needs of people. In view of a passenger car in the customer use process reflects the rear seat vibration shock is bigger, has the discomfort. The results are consistent with the customer's description. After investigating the same type of passenger cars at home and abroad, the solutions are as follows: after reforming the suspension, the inherent frequency deviation of the rear suspension is reduced, and the ride comfort of the vehicle is improved by using the variable stiffness characteristics of the compound air suspension. The main contents of this paper are as follows: according to the design parameters of the performance target vehicle suspension, the design process of the composite air suspension is described, and the stiffness characteristics of the air spring used in this paper are studied. In this paper, the expression of stiffness characteristics is derived, and the piston shape is pointed out, which has a great influence on the stiffness of membrane air spring, and the suspension design goal is satisfied by modifying the piston to make the air spring. The characteristics of air spring and shock absorber are designed and tested. The virtual prototyping technology is applied in the implementation of the scheme, and the suspension and vehicle simulation models of the reformed passenger car are established, and the suspension simulation and the vehicle operation stability simulation are carried out on the basis of the model. The veracity of the model is verified by comparing the test data and the simulation data. The feasibility of the scheme is verified by comparing the simulation results of ride comfort with the test results of the original vehicle.
【學(xué)位授予單位】:西華大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2016
【分類號】:U463.33
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