Cowin S C, Hart R T
Department of Mechanical Engineering, City College, City University of New York, NY 10031.
J Biomech. 1990;23(4):349-52. doi: 10.1016/0021-9290(90)90063-9.
The error in the prediction of the orientation of the principal axes of stress in bone tissue is determined in the case when the tissue is modeled as elastically isotropic rather than as orthotropic, the probable symmetry of bone tissue. Results are two-dimensional and assume the same underlying strain state for both the orthotropic and isotropic cases. The maximum error is 45 degrees, and the typical error is generally significant.
在将骨组织建模为弹性各向同性而非正交各向异性（骨组织可能的对称性）的情况下，确定了骨组织主应力轴方向预测中的误差。结果是二维的，并且假设正交各向异性和各向同性情况具有相同的基础应变状态。最大误差为45度，并且典型误差通常很大。
