Repeatability Testing of a Dynamic Rollover Test Fixture

A new dynamic rollover test fixture, the Jordan Rollover System or JRS, has been developed. This fixture has the ability of testing vehicles or bucks in a controlled manner with preset initial conditions including roll rate, drop height, roadway speed, contact yaw, pitch and roll, etc. The test vehicle is held between drop towers and dropped and rolled at a predetermined time to interact with a moving roadway. The vehicle can contact the roadway on either one or both sides of the roof. As the vehicle interacts with the roadway, the vehicle is supported laterally, in the direction of the moving roadway, and longitudinally and is free to rotate and move vertically without support. After contact with the roadway, the test specimen rotates to rest without any additional contacts. In order to examine the repeatability of the test fixture, a test buck was prepared. The test buck incorporates a replaceable roof structure approximating a production vehicle roof structure. The repeatable roof buck was tested with set parameters. During the tests, the crash pulse was measured utilizing on board instrumentation and load cells in the roadway. After each test, the roof was replaced. Examining the crash pulse between the tests and the initial conditions allowed the repeatability of the JRS to be determined. The JRS fixture was found to be highly repeatable.


  • English

Media Info

  • Media Type: Web
  • Features: Figures; Photos; References; Tables;
  • Pagination: 7p
  • Monograph Title: Proceedings - 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV), Washington, D.C., June 6-9, 2005

Subject/Index Terms

Filing Info

  • Accession Number: 01066409
  • Record Type: Publication
  • Report/Paper Numbers: 05-0362
  • Files: TRIS, USDOT
  • Created Date: May 29 2007 10:54AM