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Title: 半径方向の剛性変化に注目した岩石の構成方程式
Other Titles: Constitutive Equations for Rocks, Based on Radial Stiffness Decrease
Authors: 藤井, 義明1 Browse this author →KAKEN DB
石島, 洋二2 Browse this author
Authors(alt): Yoshiaki, Fujii1
Yoji, Ishijima2
Keywords: 岩石
Constitutive Equations
Radial Direction
Issue Date: 1998
Publisher: 資源・素材学会
Journal Title: 資源と素材
Volume: 114
Issue: 3
Start Page: 169
End Page: 174
Publisher DOI: 10.2473/shigentosozai.114.169
Abstract: A linear equation between axial strain, circumferential strain and axial stress was found while performing compression tests on several kinds of rock. This equation means that in such laboratory tests the trace of axial strain, circumferential strain and axial stress is located on a plane in the three-dimensional space defined by these quantities. New constitutive equations were derived combining the above-mentioned equation with another equation which derived assuming that the stiffness in the radial direction decreases with radial expansion. Using the set of the newly-deduced constitutive equations, the effect of confining pressure on strength and strain-softening behavior including Class? can be simulated. Numerical results also show the decrease in radial stiffness due to crack existence.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藤井 義明

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