Abstract
The Properties of Singing sands such as particle shape, size distribution, material and so forth have been investigated widely in many fields. We believe that the mechanism of sound generation is the same Stick-Slip phenomena as scrooping sound of silk.
We have devised a particular trial apparatus, the purpose of which is to explain the growth mechanism of sand singing.
This apparatus continually measues and records Stick-Slip phenomena. We measured a few singing sands and silent sand with this apparatus. S-S characteristics of singing sands under slow press in process are as follows.
(a) General compressibility was large in comparison with envelope curve.
(b) But, every subsidence of sands surface with stick stage was rather small.
(c) Each slip length and slip energy was promoted from position to position.
