DYNAMIC INTERACTIONS BETWEEN VEHICLES AND ELEVATED, FLEXIBLE RANDOMLY IRREGULAR GUIDEWAYS

A dynamic interaction model is formulated for the heave-pitch motion of vehicles crossing elevated flexible, randomly irregular spans. Span dynamic motion due to a vehicle passage is modeled using a Bernoulli-Euler beam model and modal analysis techniques. Four types of random irregularities characteristic of elevated guideways are modeled numerically including vertical span offset, pier misalignment, camber, and surface roughness. Analytical expressions for each irregularity power spectral density are derived and the relative contributions of irregularities to vehicle excitation are examined. The limitations to vehicle passenger comfort levels posed by guideway deflection and irregularity are illustrated for personal and rapid transit types of vehicles.

• Supplemental Notes:
  • Contributed by the Automatic Control Division for presentation at the Winter Annual Meeting, New York, N.Y., December 5-10, 1976, of the American Society of Mechanical Engineers.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Snyder III, J E
  • Wormley, D N
• Publication Date: 1976-12-5

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 11 p.

Subject/Index Terms

• TRT Terms: Automated guideway transit; Dynamic tests; Dynamics; Elevated guideways; Guideways; Mathematical models; Roughness; Vehicle dynamics
• Uncontrolled Terms: Dynamic analysis
• Old TRIS Terms: Guideway roughness
• Subject Areas: Operations and Traffic Management; Public Transportation; Railroads; Terminals and Facilities;

Filing Info

• Accession Number: 00145153
• Record Type: Publication
• Source Agency: American Society of Mechanical Engineers
• Report/Paper Numbers: 76-WA/AUT-2 Conf Paper
• Files: TRIS
• Created Date: Feb 1 1982 12:00AM