中南大学学报（自然科学版）2026，Vol.57Issue(5)：2055-2063,9.DOI:10.11817/j.issn.1672-7207.2026.05.013
考虑闸瓦-轮对-轨道耦合的瞬态接触黏滑特性分析
Transient contact stick-slip characteristics analysis considering brake shoe-wheelset-track coupling
摘要
Abstract
In order to elucidate the formation mechanism of structural damage on the contact surface,the contact characteristics of the brake shoe-wheelset-track system were investigated from the level of stick-slip vibration.According to the typical line situation,a finite element model of the brake shoe-wheelset-track coupling system was established.By executing transient calculations,the stick-slip vibration features of contact surfaces were analyzed,and the causes of surface damages of relevant structures were explored.The structural parameter of the system model was analyzed,serving as a basis for the matching optimization of dynamic parameters.The results show that,for the brake shoe-wheel contact system,the wheelset vibration acceleration is gradually transitioned from longitudinal vibration acceleration dominance to vertical vibration acceleration dominance,the main eigenfrequencies of the longitudinal vibration acceleration are 540 Hz and 616 Hz,and the main eigenfrequencies of the vertical vibration acceleration are 398-426 Hz.The wear areas of the contact surface of the brake shoe are mainly concentrated in the upper top,middle and lower bottom.For the wheel-rail contact system,in the interval of drastic variation of vibration acceleration,the rail vertical vibration acceleration occupies the main part.In the frequency range of 0-1 000 Hz,none of the three directions of the rail vibration acceleration shows obvious eigenfrequency.The rail surface shows significant longitudinal and transverse slips in the initial interval of wheelset operation,with the maximum longitudinal slip amounting to 0.119 mm and the maximum transverse slip amounting to 8.022 mm,which indicates that the braking effect leads to larger slips at the wheel-rail interface.When the parameter is changed,the variation trend of the maximum value of the contact surface slip of brake shoe and rail remains consistent.Increasing the wheelset running speed,brake shoe pressure,coefficient of friction of shoe-wheel and wheel-rail,primary suspension vertical force,and three-direction stiffness of the fastener can contribute to an increase in the maximum value of the contact surface slip,whereas increasing the three-direction damping of the fastener can decrease the maximum value of the contact surface slip.The wheelset running speed,brake shoe pressure,and coefficient of friction of shoe-wheel and wheel-rail have a large effect on the maximum value of the contact surface slip,while the rest of the parameters have a small effect on the maximum value of the contact surface slip.关键词
接触黏滑/闸瓦-轮对-轨道耦合/有限元方法/振动加速度/参数分析Key words
contact stick-slip/brake shoe-wheelset-track coupling/finite element method/vibration acceleration/parameter analysis分类
机械制造引用本文复制引用
王志强,仝凤壮,刘鹏飞,罗雁云..考虑闸瓦-轮对-轨道耦合的瞬态接触黏滑特性分析[J].中南大学学报（自然科学版）,2026,57(5):2055-2063,9.基金项目
国家自然科学基金资助项目(52422218) （52422218）
河北省自然科学基金资助项目(A2025210049) （A2025210049）
轨道交通运载系统全国重点实验室开放课题资助项目(RVL2507) （RVL2507）
上海市轨道交通结构耐久与系统安全重点实验室开放基金资助项目(R202405)(Project(52422218)supported by the National Natural Science Foundation of China （R202405）
Project(A2025210049)supported by the Natural Science Foundation of Hebei Province （A2025210049）
Project(RVL2507)supported by the Open Project of State Key Laboratory of Rail Transit Vehicle System （RVL2507）
Project(R202405)supported by the Open Project of Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety) （R202405）
