Tilt testing of two heavy vehicles and related performance issues

Recent tilt testing of two heavy vehicles has brought to the fore a number of performance issues that serve to highlight the complex and competing influences central to achieving acceptable heavy vehicle design. The paper presents the results of the tilt tests that were performed largely in accordance with recommended practice SAE J2180. For the two vehicles tilt tested, the as-measured rollover performance was found to be acceptable. To support the tilt test results, and to assess other aspects of vehicle performance, further supplementary investigations were conducted using numerical modelling, also described in the paper. For one of the test vehicles, the rollover performance was achieved in a vehicle design that features a sprung mass with a low centre-of-gravity and steer and drive axle suspensions with high auxiliary roll stiffness. The second of these two features led to concerns about suspension load sharing, and initial numerical modelling (later confirmed by physical testing) indicated the vehicle would not meet either the 5 per cent load sharing requirement for road friendly suspensions or the general 10 per cent load sharing requirement stipulated in the Australian Vehicle Standards Rules. The implications of these results and how they can be addressed are presented in the paper.

Language

  • English

Media Info

  • Pagination: 12p
  • Monograph Title: 9th International Symposium on Heavy Vehicle Weights and Dimensions, June 18-22, 2006, Pennsylvania State University, State College, Pennsylvania

Subject/Index Terms

Filing Info

  • Accession Number: 01388847
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 23 2012 1:20AM