Chang G L, Hung T K, Feng W W
Department of Civil Engineering, University of Pittsburgh 15261.
J Biomech Eng. 1988 May;110(2):115-22. doi: 10.1115/1.3108415.
An in-vivo experimental technique was employed to determine the linear and nonlinear characteristics of viscoelastic properties of the spinal cord of anesthetized cats. The stress relaxation and recovery curves were reproducible in a group of cat experiments. The data of linear viscoelastic properties were used to develop a power law model with Boltzmann's convolution integral. The model was capable of predicting a prolonged stress relaxation and recovery curve. For larger deformation, the results were quantified using a nonlinear analysis of viscoelastic response of the spinal cord under the uniaxial experiment.
采用体内实验技术来确定麻醉猫脊髓粘弹性特性的线性和非线性特征。在一组猫实验中，应力松弛和恢复曲线具有可重复性。利用线性粘弹性特性数据，通过玻尔兹曼卷积积分建立了幂律模型。该模型能够预测延长的应力松弛和恢复曲线。对于较大变形，在单轴实验下，通过对脊髓粘弹性响应进行非线性分析来量化结果。
