Stone J L, Beaupre G S, Hayes W C
J Biomech. 1983;16(9):743-52. doi: 10.1016/0021-9290(83)90083-0.
Bovine trabecular bone specimens were tested in multiaxial stress, including pure shear, in a special test device. Shear strength was proportional to apparent density to the exponent 1.65, in approximate agreement with theoretical and experimental studies on the shear strengths of porous foams. The mean shear strength was 6.60 +/- 1.66 MPa, after normalizing for apparent density. This compares well with normalized shear strengths from Saha and Gorman's (1981) study on human femora. A scanning electron microscope study indicated random trabecular architecture and a complex fracture mechanism at the level of the individual trabecular struts. Hoffmann's (1967) 3-D isotropic failure criterion was applied to the multiaxial test data, along with data from uniaxial compression tests, indicating a compressive strength approximately three times the tensile strength.
牛松质骨标本在一种特殊的测试装置中进行多轴应力测试，包括纯剪切测试。剪切强度与表观密度的1.65次方成正比，这与关于多孔泡沫材料剪切强度的理论和实验研究大致相符。在对表观密度进行归一化处理后，平均剪切强度为6.60±1.66兆帕。这与萨哈和戈尔曼（1981年）对人类股骨的归一化剪切强度研究结果相当。扫描电子显微镜研究表明，小梁结构随机，且在单个小梁支柱水平上存在复杂的断裂机制。霍夫曼（1967年）的三维各向同性失效准则被应用于多轴测试数据以及单轴压缩测试数据，结果表明抗压强度约为抗拉强度的三倍。
