00179350

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http://onlinepubs.trb.org...s/trr/1977/646/646-002.pdf

https://scholar.google.co...aley&publication_year=1977

The acquisition and analysis of ride-vibration data for the AIRTRANS automated-guideway-transit system at the Dallas-Forth Worth Regional Airport are discussed. The ride vibrations are measured as translational components of the vehicle floorboard accelerations in the three principal directions. The total record for a complete loop around the network was subdivided into sections of straight, gently curved, and sharply curved zones, and ensemble-averaged spectra for each type of zone were compared. The spectral-response characteristics between straight and gently curved zones are not very different, but the sharp turns increase the frequency, particularly in the 10 to 30-Hz range. The low-frequency behavior gives a multipeaked spectrum arising from the body and wheel modes as modified by kinematic resonances at frequencies corresponding to travel wavelengths that are multiples of the steering and main wheel bases. The ride quality was compared to a recent International Organization for Standardization standard, to a comfort criterion based on passenger satisfaction as found in small aircraft, and to ride ratings in a sedan automobile. All three predicted adequate ride satisfaction; the second method showed a 70 percent satisfaction level 94 percent of the time.

Publication of this paper sponsored by Task Force on Ride Quality. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.

01411489

pp 7-12

1977

Transportation Research Record

030902675X

Print

Figures (8) ; Photos; References (9)

Airports; Automated guideway transit; Instrumentation; Intelligent transportation systems; Passenger comfort; Ride quality

Dallas-Fort Worth International Airport

Aviation; Highways; Operations and Traffic Management; Railroads; Terminals and Facilities; Vehicles and Equipment

TRIS, TRB

Oct 12 1978 12:00AM

• COMPARISON OF PASSENGER-COMFORT MODELS IN BUSES, TRAINS, AND AIRPLANES
• EFFECTS OF DECELERATION AND RATE OF DECELERATION ON LIVE SEATED HUMAN SUBJECTS
• PASSENGER PERCEPTIONS OF THE HELICOPTER: RIDE-QUALITY CONSIDERATIONS