重庆理工大学学报2025，Vol.39Issue(11)：167-174,8.DOI:10.3969/j.issn.1674-8425(z).2025.06.020
使用柔性转向架的曲线啸叫研究及复合材料改进
Research on curve squeal with flexible bogies mechanism and improvement in composite materials
摘要
Abstract
To reduce the impact of squealing noise,a train dynamics model with flexible bogies is built.The elastic contact between wheels and rails is simulated by a three-dimensional rolling contact method.Considering the friction mechanism during the drop,the tangential force and friction coefficient between wheels and rails are calculated,and the contact force results are imported into the boundary element method to obtain the vibration response and acoustic radiation response.In the simulation,three working conditions are set according to the actual situation:a train speed of 70 km/h and a curve radius of 200 m,250 m,and 300 m.By using rigid bogies,steel bogies,and carbon fiber composite bogies,the influence of bogies on curve squealing noise is obtained.Results show treating the bogie as flexible enables a higher oscillation peak of wheel-rail contact force.Thus,it makes more sense to use flexible bogies.Compared with steel bogies,the wheel-rail contact force decreases and the oscillation weakens when carbon fiber composite bogies are used.The carbon fiber composite steering knuckle reduces the oscillation of wheel-rail forces.With a curve radius of 200 m,the train squealing sound pressure level with carbon fiber composite bogies is down by about 10％compared with that using steel bogies.关键词
啸叫噪声/复合材料/轮轨接触/转向架/降噪Key words
squealing noise/composites/wheel-rail contact/bogie/noise reduction分类
交通工程引用本文复制引用
王鸿宇,江晓禹..使用柔性转向架的曲线啸叫研究及复合材料改进[J].重庆理工大学学报,2025,39(11):167-174,8.基金项目
国家自然科学基金项目(12393782) （12393782）
