Assessment of the influence of the elastic properties of rail vehicle suspensions on safety, ride quality and track fatigue

A sensitivity analysis has been performed to assess the influence of the elastic properties of railway vehicle suspensions on the vehicle dynamic behaviour. To do this, 144 dynamic simulations were performed modifying, one at a time, the stiffness and damping coefficients, of the primary and secondary suspensions. Three values were assigned to each parameter, corresponding to the percentiles 10, 50 and 90 of a data set stored in a database of railway vehicles.After processing the results of these simulations, the analyzed parameters were sorted by increasing influence. It was also found which of these parameters could be estimated with a lesser degree of accuracy in future simulations without appreciably affecting the simulation results. In general terms, it was concluded that the highest influences were found for the longitudinal stiffness and the lateral stiffness of the primary suspension, and the lowest influences for the vertical stiffness and the vertical damping of the primary suspension, with the parameters of the secondary suspension showing intermediate influences between them.

Chinese Central Asia; a ride to Little Tibet,

Appendices: A. Some of the specimens of fauna collected by Dr. Lansdell in Central Asia. B. Bibliography of Chinese Central Asia.

Pavement roughness evaluations using a Mays ride meter. Final report.

Mode of access: Internet.

The location and design of safe and convenient park and ride lots. Final report.

California Department of Transportation, Sacramento

Significant factors in truck ride quality. Volume III: data compendium. Final report.

Federal Highway Administration, Structures and Applied Mechanics Division, Washington, D.C.

Workshop on Vehicle Ride Quality, Williamsburg, Virginia, August 13-15, 1975 : Summary report /

Includes bibliographies.

Significant factors in truck ride quality. Volume I. Summary report. Final report.

Federal Highway Administration, Structures and Applied Mechanics Division, Washington, D.C.

Significant factors in truck ride quality. Volume II: comprehensive report. Final report.

Federal Highway Administration, Structures and Applied Mechanics Division, Washington, D.C.

Assessment of year-round and holiday ride service programs. Final report.

National Highway Traffic Safety Administration, Washington, D.C.

Development of techniques and data for evaluating ride quality. Volume III: guidelines for development of ride quality models and their applications. Final report.

Transportation Department, Research and Special Programs Directorate, Washington, D.C.

Development of techniques and data for evaluating ride quality. Volume II: ride-quality research. Final report.

Transportation Department, Research and Special Programs Directorate, Washington, D.C.

Experimental designs and psychometric techniques for the study of ride quality. Final report.

Transportation Systems Center, Cambridge, Mass.

Implications of fuel-efficient vehicles on ride quality and passenger acceptance : workshop proceedings, Woods Hole, Massachusetts, September 6-8, 1978 : final report /

Includes bibliographical references.

A directory of ride service programs. Interim report.

National Highway Traffic Safety Administration, Washington, D.C.

A users' guide to ride service programs. Final report.

National Highway Traffic Safety Administration, Washington, D.C.