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首页> 外文期刊>Advanced Experimental Mechanics >Mechanical Behavior of Bovine Cortical Bone Tissue under Tension, Compression and Shear Loading
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Mechanical Behavior of Bovine Cortical Bone Tissue under Tension, Compression and Shear Loading

机译：拉伸，压缩和剪切载荷作用下牛皮质骨组织的力学行为

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摘要

Bone fracture injury frequently occurs in various accidents. During an accident, bone may be subjected to a single load or combination of multiple loads, e.g. tension, compression and shear. In this study, we conducted tension, compression and shear tests on bone tissue specimens in order to obtain the mechanical and failure characteristics of cortical bone tissue. Bone specimens were obtained from bovine femur. Haversian bone part of the femur was utilized to manufacture three kinds of specimens for tested in tension, compression and shear tests. The tests were conducted using a table-top universal testing machine equipped with custom-made jigs under a displacement rate of 1 mm/min. From the test result, load-displacement curves and stress-strain curves could be derived. Variations in the curves were confirmed. There were also notable differences in the elastic moduli and failure points. The failure strength of bone tissue was considered to be dependent on the loading modes. Collagen fiber was considered to have a strong resistance against tension, whereas hydroxyapatite was considered to have a strong resistance against compression. In addition, the direction of load against femoral axis was also found to have influences on the elastic modulus and failure point. The orientation of collagen fibers in the specimens was considered to be a factor that caused the differences.
机译：在各种事故中经常发生骨骨折损伤。在事故期间，骨头可能会承受单个载荷或多个载荷的组合，例如拉伸，压缩和剪切。在这项研究中，我们对骨组织标本进行了拉伸，压缩和剪切测试，以获得皮质骨组织的力学和破坏特性。骨标本取自牛股骨。股骨的Haversian骨部分用于制造三种标本，以进行拉伸，压缩和剪切测试。使用配备有定制夹具的台式通用测试机进行测试，位移速率为1 mm / min。从测试结果可以得出载荷-位移曲线和应力-应变曲线。确认曲线的变化。弹性模量和破坏点也存在显着差异。骨组织的破坏强度被认为取决于载荷模式。胶原蛋白纤维被认为具有很强的抗拉伸性，而羟基磷灰石被认为具有很强的抗压缩性。此外，还发现沿股骨轴的载荷方向对弹性模量和破坏点有影响。标本中胶原纤维的取向被认为是引起差异的因素。

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