کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9679530 | 1455083 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
An investigation into rail corrugation due to micro-slip under multiple wheel/rail interactions
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
The formation of short pitch corrugation on the railhead is studied by using an approach combining wheel/track dynamics, contact mechanics and wear. Multiple wheel/rail interactions are taken into account in the wheel/track dynamics. A quasi-static method based on a two-dimensional contact model is used to solve the unsteady rolling contact problem where the normal contact force and the surface curvature vary. The longitudinal slip due to traction is considered. Corrugation growth rate is calculated at different wavelengths and at two train speeds using parameters from a British Class 87 electric locomotive and typical track. It has been found that the corrugation growth rate becomes largest when the phase of the normal dynamic contact force is such that its peak occurs about 135° after the corresponding trough in the roughness. The wear is found to be heavier at shorter wavelength and proportional to the amplitude of the dynamic contact force. In addition corrugation is shown to develop more quickly using stiffer pads than softer pads, whereas growth occurs at several frequencies for softer pads.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Wear - Volume 258, Issues 7â8, March 2005, Pages 1115-1125
Journal: Wear - Volume 258, Issues 7â8, March 2005, Pages 1115-1125
نویسندگان
T.X. Wu, D.J. Thompson,