System Of Parameter Design And Construction Of Conical Rubber Spring For Rolling-Stock

Complex mechanical vibration will be generating when rolling-Stock is running on the railway. To control the vibration , the rolling-stock must have spring suspension device to limit the mechanical vibration and insure the rolling-stock running safety and improve the travel comfort especially in high speed and heavy load transportation case. There are many kinds of spring such as metal spring, air spring and rubber spring have been used in spring suspension devices. Rubber spring has bigger volume per unit than metal spring, and rubber spring can remove high frequency vibration to improve the capabilities of vibration. Because rubber spring has the characteristic of non-linearity stiffness and different vertical and horizontal stiffness could be obtained if rubber spring is used in the suspension device , So it is possible that rubber spring will be used more and more for railway vehicles in the future.But the design of rubber spring for railway vehicles is not enough mature in China. And it is touch and hard job to design the conical rubber spring by manual. So it is urgent necessary to develop a special CAD software.In this paper, based on SolidWorks software platform, the design thought and flowchart of special railway conical rubber spring suspension CAD software has been deeply described and some resource codes and instances have been inserted. The CAD software have functions as follow:1) According to the load and constraints of conical rubber spring, parameter computation of spring suspension has been carry out in the visual Basic environment.2) The 3D parameterize model of conical rubber spring suspension has been constructed by Solidworks platform which parameters come from the data we obtained in the first step. It really provides convenience to visualize and optimize the design result.3) Vibration analysis has been fulfilled by calling some math libraries and graphic libraries in MATLAB to plot graphics such as step response, impulse response, gain-frequency andphase-frequency. We can know the capabilities of the rubber spring system from the graphics.