PROCEDURE FOR TESTING BRAKING ON BENDS

TESTVERFAHREN FUER DAS BREMSEN IN DER KURVE

Tests undertaken without a driver and direct comparison of tests with and without drivers pointed to various conclusions. The differences in the handling of the individual vehicle types are the greater, the greater the radius of curvature, the greater the initial transverse acceleration, and the smaller the adhesion to the road. Variable loading affects the handling of the vehicle basically in accordance with the changing braking force distribution. The sideslip angle and the yaw angle rate indicate to the driver earlier and more strongly a rotation of the vehicle about its vertical axis, and the transverse acceleration does this in the same way for the radius of curvature driven. The evaluation of vehicle handling during braking on a bend in relation to the deceleration attained or the braking distance extends to two factors - stability and steerability. The tests with drivers showed a good correlation between the stability criteria and factors still to be defined, derived from frequency analysis, and a good correlation between steerability and average steering angle. (TRRL)

• Corporate Authors:

  Franckhlsche Verlagshandlung

  Pfizerstrasse 5, Postfach 640
  7000 Stuttgart 1,   Germany 
• Authors:
  • ROMPE, K
  • Grunow, D
• Publication Date: 1979-3

Language

• German

Media Info

• Features: Figures; References;
• Pagination: p. 93-98
• Serial:
  • ATZ - Automobil Technische Zeitschrift
  • Volume: 81
  • Issue Number: 3
  • Publisher: Franckhlsche Verlagshandlung

Subject/Index Terms

• TRT Terms: Acceleration (Mechanics); Adhesion; Braking; Braking performance; Curvature; Curves (Geometry); Deceleration; Driving; Handling characteristics; Highway curves; Loads; Rolling contact; Stability (Mechanics); Steering; Test procedures; Tests; Vehicle dynamics; Yaw
• Uncontrolled Terms: Handling; Loading
• Old TRIS Terms: Braking force coefficient; Sideslip; Steering control; Vehicle responses
• ITRD Terms: 5405: Acceleration; 2872: Bend (road); 1874: Braking; 1695: Braking distance; 5416: Deceleration; 2870: Degree of curvature; 1855: Driving (veh); 1834: Steering (process); 6255: Test; 1646: Vehicle handling
• Subject Areas: Highways; Vehicles and Equipment; I91: Vehicle Design and Safety;

Filing Info

• Accession Number: 00317117
• Record Type: Publication
• Source Agency: Bundesanstalt für Straßenwesen (BASt)
• Files: ITRD, TRIS
• Created Date: Apr 15 1981 12:00AM