基于虚拟样机技术的高速弓网系统研究

虚拟样机技术的核心是参数化、可视化设计和综合性能分析。本文结合我国250km/h高速受电弓设计,应用虚拟样机技术,对铁路接触网-受电弓系统进行系统研究。在进行受电弓可视化三维实体设计的基础上,应用多体系统动力学软件SIMPACK和有限元计算软件ANSYS,进行了受电弓的几何分析及受电弓零部件的强度和刚度校核,计算了接触网振动模态和自振频率;运用结构子结构方法,建立了受电弓-接触网耦合系统模型,计算了不同模拟运行速度下的弓网振动和接触压力响应,以及机车运行振动对受流的影响;最后为了考核接触网的疲劳可靠性,进行了在运行条件下的接触网动应力研究。

Study on Pantograph-catenary System Based on Virtual Prototyping

The core of virtual prototyping is three dimensions design and integrated analysis of performance. By using virtual prototyping, a study on the pantograph-catenary system, which is for design of the 250 km/h high-speed pantograph, has been done. Based on three dimensions design of the pantograph and using SIMPACK(dynamics analysis software of the multi-body system) and ANSYS (a code of the finite elements method), the geometry relationship of the pantograph has been analyzed and the modes and natural frequencies of the pantograph and catenary have been calculated. By applying the sub-structure method, a model of the pantograph-catenary system has been set up. The response of contact force and vibration of the pantograph-catenary system under different running speeds have been calculated, and the influence of motion of locomotive running is analyzed. In order to check the reliability of the catenary, the response of stress of the catenary under pantograph passing has been studied.