基于FASTSIM和TRIAL算法的轮轨切向接触模型研究  

A Study on Tangential Wheel-rail Contact Model Based on FASTSIM and TRIAL Algorithms

作　　者：陈爽 陈雨[2,3] 潘自立[4] 莫宏愿 安博洋[2,3] 王平[2,3] CHEN Shuang;CHEN Yu;PAN Zili;MO Hongyuan;AN Boyang;WANG Ping(Chengdu Vocational&Technical College of Industry,Chengdu 610213,China;MOE Key Laboratory of High-speed Railway Engineering,Southwest Jiaotong University,Chengdu 610031,China;Southwest Jiaotong University,Chengdu 610031,China;China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]成都工业职业技术学院,成都610213 [2]西南交通大学高速铁路线路工程教育部重点实验室,成都610031 [3]西南交通大学,成都610031 [4]中铁二院工程集团有限责任公司,成都610031

出　　处：《高速铁路技术》2023年第6期62-67,共6页High Speed Railway Technology

基　　金：中铁二院工程集团有限责任公司科技开发计划(KNSQ202054)。

摘　　要：为简化轮轨接触切向计算,基于FASTSIM算法和TRIAL算法提出了一种新的非赫兹切向算法。考虑到FASTSIM算法中不真实的抛物线边界,提出的算法采用椭圆接触边界,显著提高了切应力的计算精度,解决了非赫兹接触条件下蠕滑力不饱和的问题。以CONTACT模型为参考,通过大量轮轨接触工况,验证了提出模型的计算精度、效率与稳健性。该模型可以被进一步应用于车辆-轨道动力学与轮轨损伤计算中。To simplify the tangential calculation of wheel-rail contact,a new non-Hertzian tangential algorithm was proposed based on the FASTSIM and TRIAL algorithms.Considering the unrealistic parabolic boundary in the FASTSIM algorithm,the proposed algorithm adopted an elliptic contact boundary,significantly improving the computational accuracy of the shear stress and solving the non-saturation of creep force under non-Hertzian contact conditions.By using the CONTACT model as a reference and through numerous wheel-rail contact scenarios,the computational accuracy,efficiency,and robustness of the proposed model were validated.This model can be further applied in vehicletrack dynamics calculations and wheel-rail damage computations.

关 键 词：轮轨切向接触 FASTSIM 非赫兹算法 计算精度 计算稳定性 

分 类 号：U211.5[交通运输工程—道路与铁道工程]