The finite element study of contact behavior of the artificial hip joint
| Autor: | Tsun-En Kuo, 郭存恩 |
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| Rok vydání: | 2008 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 96 In general, having used for some period, the gap between femoral head and the acetabular cup is increased and the gait analysis may loss its significance. This research mainly focuses on the application of the finite element analysis with Hertz contact theorem and discusses the destruction situation of artificial hip joint between stem and acetabular cup under the gravity loads. The stem with bone cement and cortical bone contact one another and contact elements are applied. It includes the derivation of gravity loads due to separation of stem and acetabular cup and comparison of mechanical behaviors in the stem, the bone cement and the cortical shell with and without contact elements. The results show that, the larger the separation between stem and acetabular cup is, the greater the impact load is and the nonlinear relation between them is present obviously. The larger the femoral head and acetabular cup are, the smaller the impact loads are. The stresses generated on the contact surface of the stem are much different from those calculated from the general finite element results and more physically significant. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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