The Changes of Stress Distribution Influenced by The Medial Curves of Femoral Stem:Finite Element Analysis
碩士 === 國立成功大學 === 機械工程學系 === 85 === In this paper, a three dimensional, linearly elastic, 8-nodes isoparametric element model has been used to analyze the effects of medial curves and thickness of stem on the stress distribution in human femur. Cancellous bone and stem are simulated as the isot...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
1997
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| Online Access: | http://ndltd.ncl.edu.tw/handle/27510104441090180586 |
| Summary: | 碩士 === 國立成功大學 === 機械工程學系 === 85 ===
In this paper, a three dimensional, linearly elastic, 8-nodes isoparametric element model has been used to analyze the effects of medial curves and thickness of stem on the stress distribution in human femur. Cancellous bone and stem are simulated as the isotropic material, while cortical bone is approximately considered as a linearly elastic and transversely isotropic. Both of the Von Mises criterion and the strain energy density criterion are applied to analyze the failure behavior of the integrity total hip system.
After performing the finite element analysis for four cases with different medial curves, the peaks of the stresses always occur at the proximal region of the cancellous bone and femoral stem. However, larger curvature of the medial curve will induce higher stress concentration at proximal region of the cancellous.
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