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1
Sep
1983
Technical Reports
Analysis of Lateral Rail Restraint
Subject
Track
Keywords: Rail Restraint, Gauge Widening, Rail Deflection
Abstract: Rail restraint failure is one of the most prevalent derailment modes in railroad operation. Analytical and experimental investigations of track gauge widening have been undertaken...
Report Number
DOT/FRA/ORD-83/15
Office
RRD
1
Sep
1983
Technical Reports
Analytic Studies of the Relationship Between Track Geometry Variations and Derailment Potential at Low Speeds
Subject
Track/Train Interactions
Keywords: Computer Simulation, Mathematical Dynamic Curving, Hunting, Wheel Rail Forces, Profiles, Track Safety Standards
Abstract: This report describes analytical studies carried out to define the relationship between track parameters and safety from derailment. Problematic track scenarios are identified...
Report Number
FRA/ORD-83/16
Office
RRD
31
Aug
1983
Technical Reports
Optimization of the Design of Electric Traction Motors for Railroad and Other Applications
Subject
Evaluation
Keywords: Polyphase, Three-Phase, Induction, Synchronous, Power Conditioner, Rectifier, Inverter
Abstract: This report summarizes the results of an effort aimed at the optimization of the design of electric traction motors for railroad and other applications. Earlier extensive studies...
Office
RRD
1
Jun
1983
Technical Reports
Ballast and Subgrade Requirements Study: Railroad Track Substructure – Materials Evaluation and Stabilization Practices
Keywords: Railroad Track; Ballast; Subgrade; Sub-ballast; Substructure; Field Tests; Laboratory Tests; Performance
Abstract: Earth materials--i.e., soil and rock--form the substructure of all railroad track. In this report, the functions and performance characteristics of each of the substructure...
Report Number
DOT/FRA/ORD-83/04.1
Office
RDI-20
1
Jun
1983
Technical Reports
Ballast and Subgrade Requirements Study: Railroad Track Substructure – Design and Performance Evaluation Practices
Keywords: Railroad Track; Ballast; Subgrade; Subballast; Substructure; Design; Analysis; Performance and Evaluation; Analytical Models; Permanent Deformation; Lateral Loads
Abstract: Earth Materials- i.e., soil and rock- form the substructure (ballast, subballast, and subgrade) of all railroad track. In this report, the most suitable technology and design...
Report Number
DOT/FRA/ORD-83/04.2
Office
RDI-20