DYNAMIC RESPONSE OF TRACTOR-SEMITRAILER VEHICLE TO RANDOM INPUT

This paper is concerned with the dynamic analysis of vehicle-road using the theory of stochastic processes. The tractor-semitrailer vehicle is treated as a discrete, linear, time-invariant dynamic system subjected to a stationary random input from the road surface. The vehicle model, including primary and secondary suspension systems, and subject to both heave and pitch motions, has six degrees of freedom. A representation of random roughness of the road is given, frequency domain analysis is applied, and a parametric study is presented. The theoretical investigation described in this paper represents an attempt to obtain a better understanding of the significant parameters of vehicle construction and road characteristics involved in (a) the vibrations transmitted from the roadbed to the tractor-semitrailer vehicle, (b) the dynamic forces at the tyre-road interface. The results of the computer analysis of vehicle and road are presented in two forms; the amplitude spectra and the root mean square amplitudes which are used to predict vehicle ride quality and evaluate the design concepts. (Author/TRRL)

• Supplemental Notes:
  • Paper appeared in the book, The Dynamics of Vehicles on Roads and on Tracks.
• Corporate Authors:

  Swets Publishing Service

  347 B, Heereweg
  Lisse,   Netherlands 
• Authors:
  • Dokainish, M A
  • Elmadany, M M
• Publication Date: 1978

Media Info

• Features: Figures; References;
• Pagination: p. 237-255
• Serial:
  • Publication of: Swets Publishing Service
  • Publisher: Swets Publishing Service

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Comfort; Conferences; Damping (Physics); Degrees of freedom; Digital computers; Dynamics; Forecasting; Mathematical models; Rolling contact; Smoothness; Stochastic processes; Subgrade (Pavements); Surfacing; Suspension systems; Tractor trailer combinations; Trailers; Truck tractors; Vehicle dynamics; Vehicles; Vibration; Wheels
• Uncontrolled Terms: Articulated vehicles
• ITRD Terms: 5405: Acceleration; 1225: Articulated vehicle; 9138: Comfort; 8525: Conference; 5440: Contact (tyre road); 5559: Damping; 8673: Digital computer; 5473: Dynamics; 3071: Evenness; 132: Forecast; 6473: Mathematical model; 6574: Stochastic process; 2972: Surfacing; 1329: Suspension (veh); 1255: Vehicle; 5558: Vibration; 1372: Wheel
• Subject Areas: Data and Information Technology; Highways; Motor Carriers; Pavements; Vehicles and Equipment; I92: Vehicle Comfort;

Filing Info

• Accession Number: 00309580
• Record Type: Publication
• Source Agency: Institute for Road Safety Research, SWOV
• Files: ITRD, TRIS
• Created Date: Jun 9 1980 12:00AM