Simulation Research Of 160km/h Pantograph-catenary Based On The Finite Element Method

With the rapid development of our country's economy,the pressure of urban traffic is increasing.The traditional public transport has been unable to meet the needs of modern cities.In order to alleviate the travel pressure of residents,many cities in China pay more and more attention to the construction and planning of urban rail transit projects.Urban rail transit mostly uses pantograph to draw electricity from traction power grid and provide power for trains.Therefore,good current collection quality is a necessary condition to ensure the smooth and safe operation of urban rail trains.Studying the dynamics between pantograph and catenary can provide reference for the structural design and fault management of urban rail pantograph and catenary system,and has important research significance.The equivalent mass model is a classical model for studying pantograph-catenary contact dynamics,among which the three-mass equivalent model is widely used.This paper establishes a method based on finite element theory to calculate and optimize the three-lumped-mass model parameters of the pantograph through ANSYS and other software.In order to verify the feasibility of the simulation method,the parameters of pantograph's three-mass equivalent model are tested by experiment,and the data obtained are compared with the simulation data.Establishing a finite element equivalent model of flexible catenary and rigid catenary of urban rail transit and combining them with three-mass equivalent model of CED160 Pantograph,the dynamic characteristics of pantograph-catenary system at different speed levels are simulated by transient dynamics method.In order to improve the operation condition of pantograph under high speed condition and make it meet the requirement of higher speed,the parameters of CED160 pantograph are optimized under the operating conditions of rigid catenary.By changing the parameters of pantograph head mass,suspension stiffness,equivalent mass of upper frame,equivalent stiffness of upper frame and equivalent mass of lower frame,the dynamic contact analysis of pantograph-catenary system is carried out.And the optimal values of each group of parameters are obtained,which provides guidance for improving the design of CED160 pantograph.