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原文传递 Generic Wheel/Rail Profiles for Commuter Railroads. Research Results.

题名：	Generic Wheel/Rail Profiles for Commuter Railroads. Research Results.
关键词：	Railroads-; Commuter-railroads.;Wheel-profiles; Commuter-systems; Wheel-flange-angle; Wheel-climb-derailment.
摘要：	The Office of Research and Development of the Federal Railroad Administration (FRA) sponsored a program to develop improved wheel and rail profiles specifically for commuter systems. The National Research Council Canadas (NRCC) designed wheel profiles improve on the existing profiles of many railroads by: Implementing a 75-degree wheel flange angle to minimize the potential for wheel-climb derailment. Adopting a shape similar to that generated by averaging the thousands of worn wheels analyzed in this program. Both 1:40 and 1:20 thread taper variants are provided. A set of five generic rail templates have also been designed for good compatibility with the NRCC-COM40 wheel. A key goal of these rail profiles is to spread out wear on the wheel to help it retain its favorable shape, at the same time controlling contact stress and wear.
报告类型：	科技报告