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Friction‐Induced Vibration of Artificial Hip Joints
Author(s) -
Weiss Cornelius,
Hothan Arne,
Morlock Michael,
Hoffmann Norbert
Publication year - 2009
Publication title -
gamm‐mitteilungen
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 18
eISSN - 1522-2608
pISSN - 0936-7195
DOI - 10.1002/gamm.200910016
Subject(s) - vibration , finite element method , eigenvalues and eigenvectors , structural engineering , boundary value problem , boundary (topology) , materials science , mechanics , mechanical engineering , engineering , physics , mathematical analysis , mathematics , acoustics , quantum mechanics
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 (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)