Measurements of Nonlinear Wheelset Forces in Flange Contact Using Dynamically Scaled Models

Item

Title
Measurements of Nonlinear Wheelset Forces in Flange Contact Using Dynamically Scaled Models
Creator
Sweet, Larry M.
Sivak, Joseph A.
Putnam, William F.
Date
1980
Identifier
PB80190747
Abstract
This report presents new experimental methods for the study of rail vehicle dynamics through the use of scaled models on tangent track, and the application of these techniques to the measurement of nonlinear wheelset force/displacement relations in steady state. These relations are important to the analysis of wheelset response to track inputs, curving performance of trucks, and wheelclimb derailment. A on-fifth scale model instrumented wheelset with new wheel profiles is used, with similitude scaling of the contact forces achieved through use of a polycarbonate resin for the contact surfaces. Data are presented for wheelset lateral force and yaw moment for the nonlinear range of wheelset lateral displacements and yaw angles, including flange contact. The measured data validate the analytical model presented in a companion report, base on nonlinear wheel/rail contact geometry, creep forces with adhesion limits, and wheelset kinematics. A criterion for wheelclimb derailment is presented and verified experimentally.
Date Issued
1980-03
Extent
99
Corporate Author
Department of Mechanical & Aerospace Engineering, Princeton University
Laboratory
Office of University Research
Corporate Report Number
MAE Technical Report 1406
Report Number
DOT-RSPA-DPB-50/80/6
PB Number
PB80190747
Contract
DOT-OS-60147
NTRL Accession Number
PB80190747
Distribution Conflict
No
Access Rights
Document is available to the U.S. Public through The National Technical Information Service, Springfield, Virginia 22161
Photo Quality
Incomplete
Distribution Classification
1
DTIC Record Exists
No
Report Availability
Full text available by request
Provenance
S. Kumar
Type
report
Format
99 pages ; 28 cm.