Title :
Representing Railway Wheel Profile Using Quadratic NURBS
Author :
Liu, Xiaofang ; He, Qingfu ; Liu, Yongjun
Author_Institution :
Sch. of Mech., Electron. & Control Eng., Beijing Jiaotong Univ., Beijing, China
Abstract :
In order to solve the description of the profile curve in railway wheel profile optimization, quadratic Non-Uniform Rational Basis-spline (NURBS) was used to represent the wheel profile in this paper. By introducing the quadratic NURBS forms of straight lines and circular arcs and method of composing segments, the railway wheel profile was represented by one common quadratic NURBS form. For illustration, LM railway wheel profile used in China was utilized to show the parameter determination process of quadratic NURBS expression. NURBS can effectively solve the description of wheel profile in railway wheel profile optimization. Weights in NURBS curve can be taken as design variables and wheel profile will be changed easily by modifying weights.
Keywords :
Control engineering; Electronic mail; Helium; Land vehicles; Rail transportation; Shape control; Spline; Surface reconstruction; Surface topography; Wheels; circular arc; optimization; quadratic NURBS; railway wheel profile;
Conference_Titel :
Computational Science and Optimization (CSO), 2010 Third International Joint Conference on
Conference_Location :
Huangshan, Anhui, China
Print_ISBN :
978-1-4244-6812-6
Electronic_ISBN :
978-1-4244-6813-3
DOI :
10.1109/CSO.2010.46
