THE ANALYSIS AND COMPUTATION OF A WHOLE DEFORMATION CURVE OF ROCK UNDER UNIAXIAL PRESSURE

Liu Jun

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THE ANALYSIS AND COMPUTATION OF A WHOLE DEFORMATION CURVE OF ROCK UNDER UNIAXIAL PRESSURE

更新时间：2026-06-25

- THE ANALYSIS AND COMPUTATION OF A WHOLE DEFORMATION CURVE OF ROCK UNDER UNIAXIAL PRESSURE
- Vol. 2, Issue 3, (1980)
- 作者机构：
  
  中国科学院地质研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：21 November 2016，
  
  Published：1980
- 稿件说明：
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Liu Jun. THE ANALYSIS AND COMPUTATION OF A WHOLE DEFORMATION CURVE OF ROCK UNDER UNIAXIAL PRESSURE[J]. 1980, 2(3).
DOI：

Liu Jun. THE ANALYSIS AND COMPUTATION OF A WHOLE DEFORMATION CURVE OF ROCK UNDER UNIAXIAL PRESSURE[J]. 1980, 2(3). DOI：

摘要

一、问题的提出在实验室内

利用刚性加压设备对于岩石标本进行压缩试验

可以得到岩石标本的全变形曲线.该全变形曲线反映出岩石很多重要的力学属性

诸如压密过程、比例极限、应变强化、强度值、应变软化等等.这些力学属性无论是对于分析岩体的破坏机制

还是评价岩体的稳定性问题都是必需的第一手贫料.但实际上

直接用这些资料进行分析计算确不多.

Abstract

The whole deformation curve of rock represents important mechanical behaviour in the deformation and failure of rock .The problem has been deeply studied by numerous scientists .The author intends to deal with the whole deformation curve of rock .As the first step of study .the analogous calculation has been considered with the whole deformation curve of rock under uniaxial pressure in this paper .The mathematical expressions are developed piecewise

and the constitutive law is given .Then

the stress state of a rock specimen is computed for loading and unloading cycles step by step under the uniaxial pressure

using the finite element method .A satisfactory result is obtained .The author will consider the problem about the deformation and failure of rock under the different confining pressure in another related paper .

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