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本文旨在通过五个长骨试样在五个不同载荷等级(2KN,3KN,4KN,5KN和6KN)的抗压试验,观察哈氏系统(Haversian System)——哈氏骨板和哈氏管——的变化情况。由一组显微照片可以十分清晰地看出:(1)在载荷等级低的情况(2KN),哈氏管几乎与未受力时一样,哈氏骨板亦然;(2)在载荷等级高的情况,哈氏骨板最弱的部分最先变形;(3)随着载荷的增加,哈氏系统破坏的形式十分复杂,断裂总是发生在骨的结合缘处。 同时,测量了变形后的哈氏骨板和哈氏管的有关尺寸。对试验中所观察到的现象,用线性粘弹性力学的理论予以解释。最后提出了骨单位为纤维增强的厚壁筒模型。
The purpose of this paper is to observe Haversystem - Hastelloy and Hastelloy tubes by compressive tests of five long bone specimens at five different load levels (2KN, 3KN, 4KN, 5KN and 6KN) - the changes. From a set of micrographs it can be clearly seen that: (1) in the case of low load level (2KN), the Ham’s tube is almost the same as the unstressed Hastelloy plate; (2) at the load level In the high condition, the weakest portion of Hastelloy plate first deforms. (3) With the increase of load, the form of Hastell system destruction is very complicated, and the fracture always occurs at the junction of bone. At the same time, the relevant dimensions of the deformed Hastelloy and Hastelloy tubes were measured. The phenomena observed in the experiment are explained by the theory of linear viscoelasticity. Finally, a model of thick-walled cylinder with a bone reinforced by fiber is proposed.