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  4. Squeak in hip endoprosthesis systems : an experimental study and a numerical technique to analyze design variants
 
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Squeak in hip endoprosthesis systems : an experimental study and a numerical technique to analyze design variants

Publikationstyp
Journal Article
Date Issued
2010-07-01
Sprache
English
Author(s)
Weiß, Cornelius  
Mechanik und Meerestechnik M-13  
Gdaniec , Przemyslaw  
Biomechanik M-3  
Hoffmann, Norbert  orcid-logo
Strukturdynamik M-14  
Hothan, Arne  
Biomechanik M-3  
Huber, Gerd  
Biomechanik M-3  
Morlock, Michael  
Biomechanik M-3  
TORE-URI
https://hdl.handle.net/11420/46422
Journal
Medical engineering & physics  
Volume
32
Issue
6
Start Page
604
End Page
609
Citation
Medical Engineering and Physics 32 (6): 604-609 (2010)
Publisher DOI
10.1016/j.medengphy.2010.02.006
Scopus ID
2-s2.0-77954027530
Publisher
Elsevier
Hip endoprosthesis systems are analyzed with respect to their susceptibility to self-excited vibrations and sound or noise generation. Experimental studies reveal that certain configurations can become unstable causing exponentially growing regular high-frequency oscillations that asymptotically approach a limit-cycle with considerable amplitude. Ultimately the vibrations do also lead to the emission of sound that is perceived as squeaking or squeal. To identify dominant influence factors and critical parameters, stability analyses were conducted on the basis of finite-element modeling. The resulting numerical approach, based on the determination of complex eigenvalues and eigenvectors, is shown to be an effective tool to analyze and show differences between endoprosthesis designs with respect to their susceptibility to develop squeaking phenomenons. © 2010 IPEM.
Subjects
Complex eigenvalue
Hip endoprosthesis
Sliding instability
Squeaking
DDC Class
610: Medicine, Health
620: Engineering
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