During phonation, human vocal fold tissues are subjected to combined tension, compression and shear loading modes from small to large finite strains. Their mechanical behaviour is however still not well understood. Herein, we complete the existing mechanical database of these soft tissues, by characterising, for the first time, the cyclic and finite strains behaviour of the lamina propria and vocalis layers under these loading modes. To minimise the inter or intra-individual variability, particular attention was paid to subject each tissue sample successively to the three loadings. A non-linear mechanical behaviour is observed for all loading modes: a J-shape strain stiffening in longitudinal tension and transverse compression, albeit far less pronounced in shear, stress accommodation and stress hysteresis whatever the loading mode. In addition, recorded stress levels during longitudinal tension are much higher for the lamina propria than for the vocalis. Conversely, the responses of the lamina propria and the vocalis in transverse compression as well as transverse and longitudinal shears are of the same orders of magnitude. We also highlight the strain rate sensitivity of the tissues, as well as their anisotropic properties.

在发声期间，人声带组织受到从小到大的有限应变的组合拉伸，压缩和剪切加载模式。然而，它们的机械性能仍未得到很好的理解。在这里，我们通过首次表征固有层和声带的周期性和有限应变行为，完成了这些软组织的现有力学数据库。这些加载模式下的层。为了使个体间或个体内的变异性最小化，要特别注意使每个组织样本先后经受三个载荷。在所有加载模式下都观察到了非线性机械行为：在纵向拉伸和横向压缩中呈J形应变变硬，尽管在任何加载模式下，在剪切，应力适应和应力滞后方面都没有那么明显。另外，固有张力所记录的应力水平对于固有层比对声带要高得多。相反，固有层和声带的反应横向压缩以及横向和纵向剪切力的大小相同。我们还强调了组织的应变率敏感性及其各向异性特性。