JUMPS AND BUMPS ON RANDOM ROADS

When a car travels on a randomly profiled road at a moderate speed the wheels follow the road, but with increasing speed it can happen that a wheel leaves the ground for a short while - it jumps and bumps. A switching stochastic differential equation is presented for simulation and probabilistic analysis of the movements of the car, in particular after a jump. A simulation study illustrates the effects on the vertical accelerations of the non-linearity induced by the jumps. The conditional distributions of the road and wheel elevations after a jump are described by means of a slepian model process, giving, e.g., the average behaviour after a jump.(a) (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0022460X
• Corporate Authors:

  Academic Press Incorporated

  24-28 Oval Road
  London NW1 7DX,   England 
• Authors:
  • Lindgren, G
• Publication Date: 1981-10-8

Media Info

• Features: Figures; References;
• Pagination: p. 383-395
• Serial:
  • Journal of Sound and Vibration
  • Volume: 78
  • Issue Number: 3
  • Publisher: Elsevier
  • ISSN: 0022-460X
  • EISSN: 1095-8568
  • Serial URL: http://www.sciencedirect.com/science/journal/0022460X

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Alignment; Automobiles; Comfort; Damping (Physics); Defects; Difference equations; Mathematical models; Motion; Motor vehicles; Nonlinear systems; Probability theory; Roads; Roughness; Simulation; Smoothness; Speed; Stochastic processes; Surfacing; Traffic speed; Wheels
• Uncontrolled Terms: Bumps; Nonlinearity; Road profile; Vertical; Vertical alignment
• ITRD Terms: 5405: Acceleration; 1243: Car; 9138: Comfort; 5559: Damping; 5238: Defect (tech); 3071: Evenness; 6473: Mathematical model; 5483: Movement; 5408: Speed; 2972: Surfacing; 9087: Vertical
• Subject Areas: Data and Information Technology; Highways; Pavements; Vehicles and Equipment; I23: Properties of Road Surfaces; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00348186
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Mar 30 1982 12:00AM