铁路提速货车非线性动力学仿真模型研究

Reach on the Full Nonlinear Dynamic Model of Speed-up Railway Freight

围绕铁路提速货车非线性多刚体动力学仿真模型展开研究,通过对二维摩擦副模型的研究,建立了货车非线性元件的仿真模块,利用这些模块对货车线性动力学仿真模型进行修改,得到非线性动力学仿真模型。并且对非线性模型和线性模型的仿真结果进行了对比。

This paper mainly deals with the development of the nonlinear dynamic model for the speed- up freight truck in railway. In this paper a new two - dimension stick - slip friction model was developed and used in the freight truck model. On the basis of this model, we build many nonlinear component models, including bearing panel of the axle box, side bearing and pivot. Conseuently a new nonlinear freight truck was developed on those component simulation models. Meanwhile a linear dynamic model for the freight truck was built and compared with the nonlinear model.