摘要
针对目前工程上采用经验和试验方法确定轮轨外形匹配的问题,提出了轮轨接触的几何外形匹配优化及其可视化算法。算法用三次样条曲线拟合轮轨外形,差分法确定插值边界条件;采用二分法迭代求解轮对侧滚角解算出轮轨接触点位置,进而得到轮轨接触几何参数;利用MATLAB及Visual C++动态地将计算结果可视化。该算法实现了轮对等效锥度与横移量的定量分析,为轮轨匹配优化提供了新的方法,仿真结果表明,该算法具有较强的鲁棒性和通用性。
For the problem of using the experience and experiment method to match the wheel-rail shape in engineering,an optimization and visualization algorithm is presented for the geometrical shape matching in the wheel-rail contact system.The algorithm of the subsection cubic spline interpolation is adopted to fit the wheel-rail profiles curves, and curve boundary is got by the finite difference method;furthermore, the wheel-rail contact positions are figured out by computing the roll angles of wheelset iteratively with the dichotomy. Based on MATLAB and Visual C++, the wheel-rail contact geometrical parameters are calculated and visualized dynamically. The method achieves a quantitative analysis between equivalent conicity and lateral displacement of wheelset, then, it provides a new optimization method for the wheel-rail match. The simulation results show the algorithm is of the strong robustness and generality.
出处
《计算机工程与应用》
CSCD
2014年第19期267-270,共4页
Computer Engineering and Applications
基金
湘潭大学博士科研基金(No.10QDZ31)
湘潭大学校级项目(No.09XZX15)
湘教通[2012]401号
关键词
轮轨匹配
轮轨接触
可视化
样条插值
混合编程
wheel-rail match
wheel-rail contact
visualization
spline interpolation
hybrid programming