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Mesh considerations for adaptive finite element analyses of cement failure in total hip replacement

Mesh considerations for adaptive finite element analyses of cement failure in total hip replacement
Mesh considerations for adaptive finite element analyses of cement failure in total hip replacement
Failure of the cement mantle has been identified as a possible mode of failure of the implanted femur in total hip replacement (THR) [1]. Finite element (FE) analyses have been used to investigate the stresses experienced in the cement mantle [2] and to predict the life of the cement mantle when taking different factors into account [3]. The number of elements used, or mesh density, is an important consideration when creating a FE model. A model with an insufficient mesh density will not be able to fully capture the stress state in the area of interest, but increasing the mesh density dramatically increases the computational cost of the analysis. The aim of this study is to determine the mesh density necessary to model creep and damage accumulation in the cement mantle of a cemented implanted femur. We compare the initial stress state and damage accumulation rate for different mesh densities and different element types.
729-730
The American Society of Mechanical Engineers
Jeffers, Jonathan R.T.
806cf62c-09d6-460e-a864-7c24ee5f1bf2
Taylor, Mark
e368bda3-6ca5-4178-80e9-41a689badeeb
Jeffers, Jonathan R.T.
806cf62c-09d6-460e-a864-7c24ee5f1bf2
Taylor, Mark
e368bda3-6ca5-4178-80e9-41a689badeeb

Jeffers, Jonathan R.T. and Taylor, Mark (2003) Mesh considerations for adaptive finite element analyses of cement failure in total hip replacement. In Proceedings of the 2003 Summer Bioengineering Conference. The American Society of Mechanical Engineers. pp. 729-730 .

Record type: Conference or Workshop Item (Paper)

Abstract

Failure of the cement mantle has been identified as a possible mode of failure of the implanted femur in total hip replacement (THR) [1]. Finite element (FE) analyses have been used to investigate the stresses experienced in the cement mantle [2] and to predict the life of the cement mantle when taking different factors into account [3]. The number of elements used, or mesh density, is an important consideration when creating a FE model. A model with an insufficient mesh density will not be able to fully capture the stress state in the area of interest, but increasing the mesh density dramatically increases the computational cost of the analysis. The aim of this study is to determine the mesh density necessary to model creep and damage accumulation in the cement mantle of a cemented implanted femur. We compare the initial stress state and damage accumulation rate for different mesh densities and different element types.

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Published date: 2003
Venue - Dates: 2003 Summer Bioengineering Conference, Key Biscayne, USA, 2003-06-25 - 2003-06-29

Identifiers

Local EPrints ID: 22651
URI: http://eprints.soton.ac.uk/id/eprint/22651
PURE UUID: c356228f-8ada-4e37-aea4-6d1ab6b1f563

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Date deposited: 09 Mar 2007
Last modified: 15 Mar 2024 06:39

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Contributors

Author: Jonathan R.T. Jeffers
Author: Mark Taylor

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