Int J Performability Eng ›› 2019, Vol. 15 ›› Issue (8): 2019-2030.doi: 10.23940/ijpe.19.08.p1.20192030

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Reliability based Maintenance Model to Assess the Condition of Rotor using XLrotor

Murgayya S Ba,*, H N Suresha, Madhusudhan Nb, and Sarvanabavan Bc   

  1. a Department of Automobile Engineering, Dayananda Sagar College of Engineering, Bengaluru, 560078, India
    b ISO CAT-2 Vibration Analyst, Diagnostic Engineers, Bengaluru, 560078, India
    c School of Mechanical Engineering, Dayananda Sagar University, Bengaluru, 560078, India
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Abstract: The work carried out is focused on study and behavior of rotors and to check the reliability at the design stage using the advanced XLrotor tool. For the selected rotor, the failures are controlled by shifting critical speeds above the maximum speed in which it is designed for. The rotor is balanced with safe limits of vibration severity criteria as per ISO standards for an optimized model. Sensitivity analysis is carried out on the rotor model by varying factors such as the diameter of shaft, disk configuration, disk offset, and load on rotor model. The results obtained show good agreement with the FEM results. The results obtained are undamped & damped critical speeds, as well as velocity & dynamic load on bearings due to imbalance using XLrotor. The rotor model is balanced for a steel shaft with a steel disk as well as a steel shaft with an aluminum disk (optimized rotor model) as part of the corrective method. The work clearly emphasizes XLrotor for designing a highly reliable rotor that is safe for operating conditions.

Key words: reliability, sensitivity analysis, rotor dynamics &, XLrotor