The Application of Quasi-Linearization Techniques to Rail Vehicle Dynamic Analyses

Hedrick, J. Karl; Cooperrider, N. K.; Law, E. H.; Massachusetts Institute of Technology; Arizona State University; Clemson University

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The Application of Quasi-Linearization Techniques to Rail Vehicle Dynamic Analyses

1978-11-01
By Hedrick, J. Karl ; Cooperrider, N. K. ; Law, E. H.

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English

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Creators:

Hedrick, J. Karl ; Cooperrider, N. K. ; Law, E. H.

Hedrick, J. Karl ; Cooperrider, N. K. ; Law, E. H. Less -
Corporate Creators:

Massachusetts Institute of Technology ; Arizona State University ; Clemson University

Massachusetts Institute of Technology ; Arizona State University ; Clemson University Less -
Corporate Contributors:

John A. Volpe National Transportation Systems Center (U.S.) ; United States. Department of Transportation. Federal Railroad Administration

John A. Volpe National Transportation Systems Center (U.S.) ; United States. Department of Transportation. Federal Railroad Administration Less -
Subject/TRT Terms:

[+]

Defects Dynamic Analysis Dynamic Tests Freight Cars Hunting (Dynamics) Mathematical Models Railroad Tracks Suspension Systems Train Track Dynamics Trucks Vehicle Dynamics
Publication/ Report Number:

DOT-TSC-FRA-78-6 ; FRA/ORD-78/56

DOT-TSC-FRA-78-6 ; FRA/ORD-78/56 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Corporate Publisher:

United States. Department of Transportation. Federal Railroad Administration
Abstract:

The objective of the work reported here was to define methods for applying the describing function technique to realistic models of nonlinear rail cars. The describing function method offers a compromise between the accuracy of nonlinear digital simulation and the computational efficiency of linear methods. This work entailed the development of realistic describing function representations for nonlinearities such as the wheel/rail contact interaction and the development of algorithms for using these describing functions to predict the occurrence and stability of hunting and the forced response of rail vehicles to sinusoidal and statistical track irregularities. This report explains the describing function technique, demonstrates how it can be applied to nonlinear rail vehicle dynamics problems, describes algorithms that can be used for such problems, and presents results for typical nonlinear problems, including wheel profile and suspension nonlinearities.
Format:

PDF
Funding:

DOT-TSC-902
Collection(s):

Volpe Center
Main Document Checksum:

[+]

urn:sha256:9b235906417dbdb01779b4525facb7902f75f4a3c1fbbe37f2a29c03b8e74fdb
Download URL:

https://rosap.ntl.bts.gov/view/dot/10221/dot_10221_DS1.pdf
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The Application of Quasi-Linearization Techniques to Rail Vehicle Dynamic Analyses

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