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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。
The core of virtual prototype technology is parametric, visual design and comprehensive performance analysis. Combined with the design of 250km / h high-speed pantograph in our country, the virtual prototyping technology is applied to study the railway catenary-pantograph system systematically. Based on the pantograph visualization three-dimensional solid design, the multi-body system dynamics software SIMPACK and the finite element calculation software ANSYS were used to conduct the pantograph geometry analysis and the strength and stiffness verification of the pantograph. The vibration modes and natural frequencies of the catenary are obtained. The pantograph-catenary coupled system model is established by using the structural sub-structure method. The vibration responses of the bow mesh and the contact pressure under different simulated operating velocities are calculated. Affected by the flow; Finally, in order to assess the fatigue reliability of the catenary, the dynamic stress of the catenary under operating conditions was studied.