Min Y B, Titze I R, Alipour-Haghighi F
Department of Otolaryngology-Head and Neck Surgery, University of Iowa, Iowa City 52242, USA.
Ann Otol Rhinol Laryngol. 1995 Jul;104(7):563-9. doi: 10.1177/000348949510400711.
The longitudinal elastic properties of the human vocal ligament were quantified by stress-strain measurements and by modeling the response mathematically. Human ligaments were obtained from surgery and autopsy cases. They were dissected, mounted, and stretched with a dual-servo ergometer to measure force versus elongation and to convert the results into stress and strain. To calculate a longitudinal Young's modulus, the stress-strain curves were fitted with polynomial and exponential functions and differentiated. Young's modulus was separately defined in the low- and high-strain regions. The mean Young's modulus for the low-strain region was 33.1 +/- 10.4 kilopascals. In the high-strain region, A and B parameters for an exponential fit were 1.4 +/- 1.0 and 9.6 +/- 1.2 kilopascals, respectively. The stress-strain and Young's modulus curves showed the typical hysteresis and nonlinearity seen previously in other vocal fold tissues (muscle and mucosa), but the nonlinearity was most profound for the vocal ligament.
通过应力-应变测量以及对响应进行数学建模，对人声带韧带的纵向弹性特性进行了量化。人韧带取自手术和尸检病例。将它们进行解剖、安装，并使用双伺服测力计进行拉伸，以测量力与伸长量的关系，并将结果转换为应力和应变。为了计算纵向杨氏模量，对应力-应变曲线进行多项式和指数函数拟合并求导。杨氏模量在低应变和高应变区域分别定义。低应变区域的平均杨氏模量为33.1±10.4千帕斯卡。在高应变区域，指数拟合的A和B参数分别为1.4±1.0和9.6±1.2千帕斯卡。应力-应变曲线和杨氏模量曲线显示出先前在其他声带组织（肌肉和黏膜）中所见的典型滞后和非线性，但声带韧带的非线性最为显著。
