摘要
提出了一种改进的基于多项式拟合的轮轨接触几何计算方法,通过分段多项式拟合得到轮轨踏面的函数,并应用于轮轨滚动接触几何的计算。计算结果表明,与实时迹线法相比,该方法的计算效率可提高40%,同时又能保证精度要求。
An improved geometrical calculation method for wheel-rail rolling contact based on polynomial fitting is put forward.The function of wheelrail tread is obtained through piecewise polynomial fitting,and is applied in the geometrical calculation for wheel-rail rolling contact.The calculation result shows that,comparing with the real-time trace method,the calculation efficiency of the method can be improved by 40%,in the mean time,the accuracy requirement can be ensured.
出处
《铁道车辆》
北大核心
2014年第8期1-5,7,共5页
Rolling Stock
基金
江西省自然科学基金(20132BAB216026)
华东交通大学校立科研基金资助(10JD01)
关键词
轮轨滚动接触几何
多项式拟合
迹线法
wheel-rail rolling contact geometry
polynomial fitting
trace line method
