Abstract
Modern rotating machines are often required to operate with increasingly limited physical footprints and/or overall weights, necessitating that they utilize wide-ranging shaft speed to accomplish needed power levels. It is not uncommon then that the resulting speed envelope crosses or encompasses multiple critical speeds with the requirement that flexural vibrations be limited to safe and acceptable levels. Design optimization of this class of problem can be particularly difficult in that responses can exhibit high modality adding significant complexity and time to the optimization effort. This paper presents a design optimization methodology appropriate to an economic solution for this class of problem. A simplified rotordynamic example is used to challenge the proposed optimization method against other more “conventional” techniques with results of the proposed method extensible to more complicated, practical rotordynamic problems.
Published Version
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