标题： 力链结构转变的机械光谱观测 显示英文标题

标题： Structural transition of force chains observed by mechanical spectroscopy

摘要： 通过低频机械光谱法研究了细砂系统的耗散特性。 实验显示了相对能量耗散的许多有趣轮廓，这表明密集颗粒介质中的力链结构发生了某种转变。 以下数据和讨论表明，力链的转变会导致颗粒系统中排列的小变形，这是造成历史效应的原因。 我们希望这项研究能增进我们对颗粒材料微观结构的认识。 显示英文摘要

摘要： The dissipation properties of a fine sand system are investigated by a low-frequency mechanical spectroscopy. The experiments show many interesting profiles of the relative energy dissipation, which imply that some structural transition of force chains in dense granular media has occurred. The following data and discussion indicate that the transition of force chains will lead to the small deformation of arrangement in the granular system, which is responsible for the historical effects. We hope this research can improve our knowledge of the microstructure of the granular materials.