中南大学学报（自然科学版）2024，Vol.55Issue(5)：2036-2047,12.DOI:10.11817/j.issn.1672-7207.2024.05.033
升力翼高速列车曲线通过时的轮轨黏着性能研究
Wheel-rail adhesion performance of high-speed trains with lift wings passing through the curved track
摘要
Abstract
A vehicle system dynamic model considering factors such as wheel-rail relationship,lift wings,and fluid-solid coupling characteristics was established.The motion attitude and wheel-rail contact characteristics of a high-speed train with lift wings passing curves were analyzed,and the wheel-rail adhesion performance during curve operation was studied.The effects of track irregularities,curve radius,train speed,and wheel-rail contact conditions on the wheel-rail adhesion performance were investigated.The results show that aerodynamic lift redistributes the vertical and longitudinal creep forces of the inner and outer wheels by changing the dynamic response and wheel-rail contact characteristics of the train,causing the inner wheel more likely to lose adhesion.Increasing aerodynamic lift and train speed both degrades the wheel-rail adhesion performance,but increasing the curve radius significantly improves the adhesion level.Track irregularities weaken the wheel-rail adhesion performance,and the adhesion level under dry,wet,and oily conditions deteriorates accordingly.When the train is in traction operation,circumstances in dry,wet and oily conditions can meet the safe limit of traction force requirement,but during braking operation,those circumstances in wet and oily conditions cannot satisfy the safe limit of braking force requirement.The research results can provide technical support for the safe operation and energy-efficient design of ultra-high-speed trains.关键词
高速列车/升力翼/牵引/制动/曲线通过/轮轨黏着Key words
high-speed trains/lift wings/traction/braking/curve passing/wheel-rail adhesion分类
交通工程引用本文复制引用
黄初贤,王金能,陈旸,敬霖,王开云..升力翼高速列车曲线通过时的轮轨黏着性能研究[J].中南大学学报（自然科学版）,2024,55(5):2036-2047,12.基金项目
国家重点研发计划项目(2020YFA0710902) （2020YFA0710902）
国家自然科学基金资助项目(12122211)(Project(2020YFA0710902)supported by the National Key Research and Development Program of China （12122211）
Project(12122211)supported by the National Natural Science Foundation of China) （12122211）
