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Friction-Induced Vibration of Artificial Hip Joints

โœ Scribed by Cornelius Weiss; Arne Hothan; Michael Morlock; Norbert Hoffmann

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
256 KB
Volume
32
Category
Article
ISSN
0936-7195

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โœฆ Synopsis

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 pseudoin vivo setup and the not-implanted system under laboratory conditions without boundary conditions.

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