Front Wheel Drive Half Shaft Angle Optimization Using 12 Degree of Freedom Analytical Model

Paper #:
  • 2017-01-1770

Published:
  • 2017-06-05
Abstract:
This paper describes a method used to assess and optimize half shaft joint angles to avoid excessive 3rd order vibrations during WOT and light drive away events. The objective was to develop a test based analytical model used to assess and optimize driveline-working angles during the early planning phases of a new program when packaging tradeoffs are decided. The 12 degree of freedom system model comprehends half shaft dynamic angle change, axle torque, P/T mount rate progression and axial forces in the tripot joints. The analytical model results enable fact-based decisions during architectural planning phases for driveline working angles, powertrain mount designs and locations relative to P/T center of gravity. There were several challenges encountered and addressed during the correlation process including half shaft dynamic angle, P/T lateral rigid body mode frequency and subjective rating predictions.
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