DYNAMIC MODELLING FOR AUTOMOBILE ACCELERATION RESPONSE AND RIDE QUALITY OVER ROUGH ROADWAYS

Current interest in dynamics and vibration of ground transportation vehicles arises from the fact that excessive levels can lead to unsafe operation and give an uncomfortable ride to passengers. Three different models of an intermediate sedan together with two different models for roadway roughness are compared. Roadway models compared are, first, a random input single track model with statistics governed by a power spectral density proportional to the square of the wavelength and, second, a model using a data sequence with a zero order hold where the data sequence is obtained from measured evaluation profiles of actual roadway sections. Frequency weighted rms acceleration responses are compared with serviceability indices of roadway test sections.

• Supplemental Notes:
  • Prepared in cooperation with Department of Transportation, Washington, D.C. Office of Univ. Research.
• Corporate Authors:

  University of Texas, Austin

  Council for Advanced Transportation Studies
  Austin, TX  United States  78712

  Department of Transportation

  Office of University Research, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Healey, A J
  • SMITH, C C
  • Stearman, R O
  • Nathman, E
• Publication Date: 1974-12

Media Info

• Pagination: 69 p.

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Automobiles; Dynamics; Ground transportation; Highways; Mathematical models; Passenger comfort; Power spectra; Riding qualities; Roughness; Vehicle dynamics; Vibration
• Uncontrolled Terms: Models
• Subject Areas: Highways; Pavements; Safety and Human Factors;

Filing Info

• Accession Number: 00147373
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: RR-14 Res. Rpt., DOT/TST-75/141
• Contract Numbers: DOT-OS-30093
• Files: NTIS, TRIS, ATRI, USDOT
• Created Date: Mar 15 1977 12:00AM