Nishi Toshiaki, Ueno Kyohei, Nomoto Tomohiro, Sugisawa Shinya, Shin Daiki, Yamaguchi Ken, Kuwayama Isao, Yamaguchi Takeshi
Graduate School of Engineering, Tohoku University, 6-6-01, Aoba, Aramaki-Aza, Aoba-ku, Sendai, Miyagi, 980-8579, Japan.
Bridgestone Corporation, Tokyo, Japan.
Sci Rep. 2024 Jun 12;14(1):13530. doi: 10.1038/s41598-024-64271-6.
This study employed a digital image correlation method (DICM) to experimentally quantify horizontal strain distribution in silicone rubber bulk during horizontal displacement against a stainless-steel sphere with/without glycerol. The strain distribution at different depth levels was measured by capturing the position of white powders in transparent rubber bulk. The experimental results indicated that each point in the rubber bulk moved while describing a horizontal loop during horizontal displacement depending on the position and lubrication conditions. This caused changes in the horizontal strain during horizontal displacement. These results suggest that the hysteresis term could be caused by changes in the vertical and horizontal strains.
本研究采用数字图像相关方法（DICM），通过对带有/不带有甘油的硅橡胶块体与不锈钢球体进行水平位移实验，来定量测定其水平应变分布。通过捕捉透明橡胶块体中白色粉末的位置，测量不同深度水平处的应变分布。实验结果表明，橡胶块体中的每个点在水平位移过程中都会移动，并根据位置和润滑条件描绘出一个水平环。这导致了水平位移过程中水平应变的变化。这些结果表明，滞后项可能是由垂直和水平应变的变化引起的。
