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標題: 人工髖關節之接觸力學現象研究–有限元素法之應用
The finite element study of contact behavior of the artificial hip joint
作者: 郭存恩
Kuo, Tsun-En
關鍵字: artificial hip joint;人工髖關節;bone cement;cortical bone;Hertz contact theorem;骨水泥;皮質骨;赫茲接觸理論
出版社: 機械工程學系所
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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.
其他識別: U0005-0108200811170100
Appears in Collections:機械工程學系所

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