Zhang Zhaoyan, Samajder Himadri, Long Jennifer L
Department of Head and Neck Surgery, University of California, Los Angeles, 31-24 Rehab Center, 1000 Veteran Avenue, Los Angeles, California 90095-1794, USA
J Acoust Soc Am. 2017 Oct;142(4):EL356. doi: 10.1121/1.5006205.
Mechanical properties of the human vocal fold cover layer were experimentally investigated in uniaxial and biaxial tensile tests. The results showed a coupling effect between the stress conditions along the anterior-posterior and transverse directions, with vocal fold elongation increasing vocal fold stiffness along both directions, thus allowing more efficient control of the fundamental frequency of voice through vocal fold elongation. This study also shows that vocal folds were nearly isotropic at resting conditions, thus a tendency to vibrate with incomplete glottal closure, but became increasingly anisotropic with increasing vocal fold elongation.
通过单轴和双轴拉伸试验对人声带覆盖层的力学性能进行了实验研究。结果表明,前后方向和横向的应力条件之间存在耦合效应,声带伸长会增加两个方向上的声带刚度,从而通过声带伸长更有效地控制基频。该研究还表明,声带在静止状态下几乎是各向同性的,因此有不完全声门闭合振动的趋势,但随着声带伸长增加,各向异性越来越明显。