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User's Manual: 2, 3, & 4 Axle Rigid Truck Curve Negotiation Model

  • 01
  • Jan
  • 2001
AUTHOR: K. R. Smith, R. D. MacMillan, G. C. Martin
OFFICE: RPD
SUBJECT: Track/Train Interactions
KEYWORDS: Computer Environment, Control Cards, Load
ABSTRACT: [From the Introduction] The rigid truck curve negotiation model calculates the lateral wheel-rail forces associated with the negotiation of a section of curved track by a rigid framed locomotive truck for a variety of normal operating conditions. The model itself is of a quasi-static nature modeling the truck in static equilibrium for each set of input data. Each truck of the locomotive is modeled individually and is assumed to have a conventional center bearing connection from the bolster to the locomotive, which does not impart any rotational stiffness, (this is a valid assumption under the static context of the model.) The model simulates two, three and four axle trucks. The model will also compute the curving forces under various external conditions that exist which include: Operation at over or under balance speed; Train operation forces which may result in buff force components acting at the truck center bearing; Any combination of individual axle loads; Any combination of individual wheel loads consistent with axle loads; Development of a tractive or braking effort; Any combination of individual wheel radii.
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