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Reliability Modeling of Rotary Systems Subjected to Imbalance

Volume 9, Number 4, July 2013 - Paper 7 - pp. 423-432


Reliability Engineering Centre, Indian Institute of Technology, Kharagpur-721302, West Bengal, INDIA.

(Received on October 31, 2012, revised on April 26, 2013)


The focus of this paper is on reliability computation of rotary systems. Rotary systems reliability depends not only on the static design stresses but also on dynamic forces generated during operation. These systems are subjected to many sources of dynamic forces such as imbalance, misalignment, oil whirl, bend shaft, mechanical looseness and so on. The major source of problem of a rotary system, viz, the imbalance is considered in this paper. A model is proposed to incorporate the effect of imbalance mass on the reliability of rotary systems. The effect of rotating speed on reliability can also be assessed by this model. A stress-strength interference approach together with a simulation-based methodology is used for modeling and analysis of this complex relationship. Illustrative examples are provided for demonstrating the practical utility of the approach.


References: 27

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