ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Stresses due to resonant vibrations induce fatigue damage in turbomachinery bladesjeopardizing their structural integrity. Damping plays a fundamental role in passive control ofresonant stresses. In the present work the effect of ‘crowning’ of dovetail joints on blade-rootfriction damping is for the first time investigated. In detail, the damping of a simplified blade ismeasured under varying centrifugal load for two different joint geometries: a customary dovetailattachment and a ‘crowned’ one. A theoretical model is developed to quantify the dampinggenerated at the contact surfaces. Experimental results and analytical predictions are compared
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.347.317.pdf
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