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Modeling and Simulation Study for Failure Prevention of Shredder Rotor Bearing System Used for Synthetic Elastic Material Applications

Abstract

This research presented the modeling and simulation approach, as a failure prevention and design optimization tool for determining the dynamic optimal performance of a rotor bearing system, in respect to stability at specified speed range, through selection of appropriate bearing damping coefficient, at the conceptual design stage. The mathematical model of the system was developed, followed by the design of the Simulink model from the mathematical model equations. The model was then linearized before the simulation to obtain the step response plots. Varying values of damping coefficient for the system model were simulated and result showed the underdamped, critically damped, and overdamped working conditions of the system. The critical damping, which represents the optimal operational state for the system state, was established at the point where the least value of settling time, rise time of and zero overshoot was recorded. The model performance was confirmed/validated using bode diagrams and pole-zero map. The research showed that a proper design and selection of damping coefficient of bearing are important as a means of reducing the amplitude of vibration, which could result in mechanical failure of any designed shredder rotor bearing system when in operation.

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Correspondence to Peter Chikelu.

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Chikelu, P., Nwigbo, S., Azaka, O. et al. Modeling and Simulation Study for Failure Prevention of Shredder Rotor Bearing System Used for Synthetic Elastic Material Applications. J Fail. Anal. and Preven. 22, 1566–1577 (2022). https://doi.org/10.1007/s11668-022-01446-1

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  • DOI: https://doi.org/10.1007/s11668-022-01446-1

Keywords

  • Modeling
  • Simulation
  • MATLAB/Simulink
  • Transfer function
  • Pole-zero map
  • Bode diagram
  • Rotor
  • Bearing
  • Shredder
  • Failure prevention
  • Dynamic response
  • Design methodology