Backlash effect on dynamic analysis of a two-stage spur gear system

  • L. Walha
  • T. Fakhfakh
  • M. Haddar
Peer Reviewed Articles


Gearbox dynamics are characterized by a periodically changing stiffness due to multiple teeth contacts. In real gear systems, a backlash also exists that can lead to a loss in contact between the teeth. Due to this loss of contact, the gear has piecewise linear stiffness characteristics. This paper examines the effect of backlash in the two-stage gear system. A purely torsional gear system is formed by three shafts connected to each other by two spur gear pairs. Using standard methods for nonlinear systems (Newton-Raphson algorithm), the dynamic behavior of a gear system with backlash is examined. Amplitude jumps in systems due to backlash are observed.


backlash gearmesh stiffness fluctuation two-stage gear system 


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Copyright information

© ASM International 2006

Authors and Affiliations

  • L. Walha
    • 1
  • T. Fakhfakh
    • 1
  • M. Haddar
    • 1
  1. 1.Mechanics Modelling and Production Research Unit (U2MP), Mechanical Engineering DepartmentNational School of EngineersSfaxTunisia

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