西南交通大学学报2025，Vol.60Issue(2)：434-444,11.DOI:10.3969/j.issn.0258-2724.20230206
刚性接触网-受电弓系统快速仿真方法
Fast Simulation Method for Pantograph and Overhead Conductor Rail System
摘要
Abstract
Finite element model simulation of the pantograph and overhead conductor rail(OCR)system is slow,and the time cost of calculation is high.Therefore,the simulation method and process of the pantograph and OCR system using three-dimensional contact formulation were improved.Firstly,the equation that needs to be calculated iteratively when solving the relative velocity of the contact pair between the pantograph and the OCR was replaced with an explicit equation that can be calculated directly based on the central difference method.Then,the OCR model was linearized at the static equilibrium state to avoid the time-consuming stiffness matrix assembly procedure and increase the efficiency when calculating the internal force of the OCR.Next,a lazy judgment strategy was used to estimate the contact state of the pantograph and the OCR to reduce the computational load.Finally,the computational efficiency and accuracy of the fast simulation method in different cases were analyzed.The results show that compared with the standard simulation method,the proposed fast simulation method can save 97.67%of computational time in the example of pantograph and OCR with 30 spans of 8 m,and the maximum error of contact force results is only 0.48%.With the increase in the model scale,the time saved by the fast simulation method increases sharply,and its computational efficiency advantage becomes more and more significant.Meanwhile,the errors of contact force results are all less than 1.00%.With the increase in the operation speed,the proportion of time saved by the fast simulation method remains stable,and the errors of contact force results increase slightly.At speeds under 230 km/h,the standard deviation errors of contact force are all less than 1.00%.关键词
刚性接触网/有限元方法/计算效率/绝对节点坐标法/三维接触Key words
overhead conductor rail/finite element method/computational efficiency/absolute nodal coordinate formulation/three-dimensional contact分类
交通运输引用本文复制引用
陈龙,刘志刚,段甫川,胡泽尧,徐钊,陈可..刚性接触网-受电弓系统快速仿真方法[J].西南交通大学学报,2025,60(2):434-444,11.基金项目
国家自然科学基金项目(52172408,52102478,U2468229) （52172408,52102478,U2468229）
