Technical Reports

Truck Design Optimization Project (TDOP) Phase II: Performance Specification for Type II Freight Car Trucks

  • 01
  • Aug
  • 1981
AUTHOR: P. V. RamaChandran, M. M. ElMadany
OFFICE: RPD
REPORT NUMBER: FRA/ORD-81/36-I
SUBJECT: Freight Operations
KEYWORDS: Performance Regimes, Performance Characteristics, Lateral Stability, Trackability, Ride Quality, Steady State Curve Negotiation
ABSTRACT: One of the important goals of the Truck Design Optimization Project (TDOP) Phase II is to provide the railroad industry with a basis for performance specifications for the new generation (Type II) freight car trucks. This report sets forth such a quantitative basis as supported by available field test data. The quantified performance characterizations and recommended guideline specifications have been arrived at through field testing several representative Type II trucks, reducing and analyzing the field test data, and interpreting them in the light of physical reasoning. The performance characterizations and guideline specifications are provided in four distinct regimes of performance including lateral stability, trackability, steady-state curve negotiation, and ride quality.

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