Abstract
[Truncated] This thesis presents a study of wear mechanisms for total hip replacements (THRs) utilizing both the finite element method (FEM) and laboratory experiment. The hip prosthesis studied consists of an ultra-high molecular weight polyethylene (UHMWPE) acetabular cup articulating against a cobalt-chromium (CoCr) alloy femoral head. According to the geometrical scale, the FEM models developed can be divided into two categories, the first deals with a macro-scale whilst the second treats a micro-scale (asperity) geometry model.
The macro-scale FEM model aims to analyse various aspects of the prosthesis, for instance, bulk material, surface stress and temperature rise under variable conditions of elastic modulus, friction coefficient, sliding speed and radial clearance. In this analysis, apart from the CoCr alloy head, an alumina femoral head model is also included in the FEM analysis. The results obtained from the model are useful in understanding the operating conditions and the causes of wear within THRs.
The macro-scale FEM model aims to analyse various aspects of the prosthesis, for instance, bulk material, surface stress and temperature rise under variable conditions of elastic modulus, friction coefficient, sliding speed and radial clearance. In this analysis, apart from the CoCr alloy head, an alumina femoral head model is also included in the FEM analysis. The results obtained from the model are useful in understanding the operating conditions and the causes of wear within THRs.
| Original language | English |
|---|---|
| Qualification | Doctor of Philosophy |
| Awarding Institution |
|
| DOIs | |
| Publication status | Unpublished - 2005 |
Take-down notice
- This thesis has been made available in the UWA Profiles and Research Repository as part of a UWA Library project to digitise and make available theses completed before 2003. If you are the author of this thesis and would like it removed from the UWA Profiles and Research Repository, please contact [email protected]