Friction-induced vibration of artificial hip joints

Journal
GAMM-Mitteilungen  
Volume
32
Issue
2
Start Page
193
End Page
204
Citation
GAMM Mitteilungen 32 (2): 193-204 (2009)
Publisher DOI
10.1002/gamm.200910016
Scopus ID
2-s2.0-73849109870
Publisher
Wiley
A hip replacement system is analysed with respect to its susceptibility to friction induced vibrations under laboratory conditions and in a pseudo-in vivo setup. The method of complex eigenvalue extraction within the framework of finite-element modelling and analysis is used to identify the geometric properties and system parameters that might lead to unstable sliding states. The approach presented reveals negatively damped eigenmodes for both the pseudo-in vivo setup and the not-implanted system under laboratory conditions without boundary conditions. © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Subjects
Complex eigenvalue
Hip replacement
Radial dynamics
Sliding instability
Squeaking
DDC Class
610: Medicine, Health
620: Engineering