DYNALIST II, A COMPUTER PROGRAM FOR STABILITY AND DYNAMIC RESPONSE ANALYSIS OF RAIL VEHICLE SYSTEMS. VOLUME I. TECHNICAL REPORT

A methodology and a computer program, DYNALIST II, have been developed for computing the response of rail vehicle systems to sinusoidal or stationary random rail irregularities. The computer program represents an extension of the earlier DYNALIST program. A modal synthesis procedure is used which permits the modeling of subsystems or components by partial modal representation using complex eigenvectors. Complex eigenvectors represent the amplitude and phase characteristics of rail vehicle systems which occur as a result of wheel-rail interaction, heavy damping in the suspension system and rotating machinery. Both vertical and lateral motion are handled by the program which allows up to twenty-five component and fifty system degrees of freedom.

• Record URL:
  https://railroads.dot.gov/elibrary/dynalist-ii-computer-program-stability-and-dynamic-response-analysis-rail-vehicle-0
• 
• Supplemental Notes:
  • Prepared by Wiggins (J. H.) Co., Redondo Beach, Calif.
• Corporate Authors:

  Transportation Systems Center

  55 Broadway, Kendall Square
  Cambridge, MA  United States  02142

  Wiggins (JH) Company

  1650 South Pacific Coast Highway
  Redondo Beach, CA  United States  90277

  Federal Railroad Administration

  Office of Research and Development, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Hasselman, T K
  • Bronowicki, A
  • Hart, G C
• Publication Date: 1975-2

Media Info

• Media Type: Digital/other
• Pagination: 118 p.

Subject/Index Terms

• TRT Terms: Computer programming; Computer programs; Damping (Physics); Defects; Dynamic loads; Dynamic tests; Dynamics; Equations of motion; Human factors engineering; Mathematical models; Rail (Railroads); Railroad cars; Railroad tracks; Stability (Mechanics); Suspensions; Systems analysis; Train track dynamics; Vehicle design; Vibration; Wheels
• Uncontrolled Terms: Dynamic analysis; Dynamic response; Lateral dynamics; Models; Vertical dynamics
• Old TRIS Terms: Car design; Dynalist; Track irregularities
• Subject Areas: Design; Railroads; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00143041
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: DOT-TSC-FRA-74-14.I Final Rpt., FRA/ORD-75/22.I
• Contract Numbers: DOT-TSC-760-1
• Files: NTIS, TRIS, USDOT
• Created Date: Oct 6 1977 12:00AM