铁道车辆空气弹簧模型的研究

Research on the Model of Air Springs for Rolling Stock

首先建立了3种空气弹簧模型,即等效模型、线性模型及非线性模型,然后对比分析了3种空气弹簧模型的计算精度和计算速度。结果表明,等效模型的计算精度较差;非线性模型的计算速度较慢;线性模型既可保证较快的计算速度,又可保证较高的计算精度。因此,在工程应用中,建议采用空气弹簧线性模型来进行计算分析。

Three models of air springs are established, i.e., the equivalent model, the linear model and the non-linear model. The calculation precisions and calculation speeds of the three models of air springs are compared and analyzed. The result shows that the calculation precision of the equivalent model is relatively poor, the calculation speed of the non-linear model is relatively slow, and the linear model can not only ensure the relatively fast calculation speed, but can also ensure the relatively high calculation precision. Therefore, in the engineering application, it is suggested to use the linear model of air springs to make the calculation analysis.