Effect of the fifth–wheel placement on the stability of articulated vehicles

Dynamic stability is crucial for vehicle safety, not least for heavy commercial vehicle safety. An articulated vehicle such as a tractor–semitrailer may, if not correctly designed, handled or rebuilt, fall into instability when driving. This is affected by several factors of which the geometric location of the fifth wheel is one. The effect on stability of the fifth wheel location along the longitudinal axis is therefore analysed using a simplified model and a more detailed Multi-Body Systems (MBS) model. Results indicate that the tractor–semitrailer becomes unstable if the fifth wheel is located in a too far rearward position.


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  • Accession Number: 01484152
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 29 2013 11:10AM