夾炭層岩石のボアソン数と応カ-ヒズミ線図
1958 年 74 巻 835 号 p. 2-6
詳細
1958 年 74 巻 835 号 p. 2-6
This investigation was undertaken to measure the Poisson's number and to draw the stress-strain diagram of “Asagai” sandstone which brought from the Joban Colliery.
The strain of the specimen was measured by electric strain gauges.
The strain of the specimen was measured by electric strain gauges.
The Poisson's number decreased from about 6.5 to about 4 as the tensile stress increased.
Next, in addition to drawing stress-strain diagrams for tension and bending tests, the diagram for the simple compression was introduced by a calculation and from the comparison between these diagrams, and it was found that the “secant modulus of longitudinal elasticity” for compression was about 1.4-1.5 times that for tension.
