George Matsoukas, a Master's student working under the direction of Dr. Kim is applying Multi-Objective Optimization to the design of a total hip replacement prosthesis considering volumetric wear and bone remodeling.
In the first phase of George's research, experimental validation of the proposed mathematical model for volumetric wear is being performed at the Human Mobility Research Centre (HMRC) at Kingston General Hospital. The objective function for volumetric wear is a form of Archard's wear law, and validation is being performed on an AMTI Force 5 wear testing machine using ISO standard kinematic and loading profiles. A three-dimensional transient finite element analysis of the experimental setup has been constructed in order to draw direct comparisons between the computational model and experimental results.
In the second phase of George's research, optimization is being performed on a parametric model of a total hip replacement prosthesis using the validated wear model and bone remodelling as objective functions. The trade-off between these two objective functions will be investigated. Preliminary optimization results for volumetric wear were presented at the AIAA Multi-disciplinary Analysis and Optimization conference in September 2006 in Portsmouth, VA.
Publications:
[1] George Matsoukas, Il Yong Kim, "Design Optimization of Un-cemented Total Hip Replacement Components Considering Wear and Bone-Implant Interface Relative Displacement," CSME Conference, May 22, 2006, Kananaskis, Alberta.
[2] George Matsoukas, Il Yong Kim, "Shape Optimization of an Un-cemented Total Hip Replacement Prosthesis Considering Volumetric Wear," AIAA Multi-disciplinary Analysis and Optimization Conference, September 5-8, 2006, Portsmouth, VA.