Journal
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
Volume 24, Issue 8, Pages 2777-2791Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2010.06.006
Keywords
Robust design; Bladed discs; Mistuning; Parameter design
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Small unavoidable differences (e.g. 5%) between blades on a bladed disc, called mistuning, can lead to a huge variation of forced vibration response levels, and some of them are extremely high (e g. 500% of the level experienced on every blade is all blades are identical). In this first half of a two-part article, a novel approach of designing a bladed disc with a lower chance of encountering high vibration response levels is evaluated A robust design concept is applied to manage the variability of the vibration response levels, and the new approach resembles parameter design in Taguchi method of robust design. A robustness map is created using simulations results of a 6-degree-of-freedom (6-DOF) system, and such a map is validated by two more complicated models The robustness map is used to explain the behaviour of bladed discs investigated in previous studies and to give possible methods of delivering more robust bladed disc designs. (C) 2010 Elsevier Ltd. All rights reserved.
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