Damage constitutive model of rock under medium and low strain rates

CAI Can; WU Kai-song; YUAN Xiao-hong; CHENG Shao-jie

doi:10.16285/j.rsm.2015.03.025

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Damage constitutive model of rock under medium and low strain rates

更新时间：2026-06-25

- Damage constitutive model of rock under medium and low strain rates
- Vol. 36, Issue 3, Pages: 795-802(2015)
- 作者机构：
  
  1. 西南石油大学机电工程学院,四川,成都,610500
  2. 西南石油大学现代油气装备教育部重点实验室,四川,成都,610500
  3. 宝鸡石油机械责任有限公司,陕西,宝鸡,721000
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.03.025
  CLC： P634.1
- Online First：13 June 2018，
  
  Published：2015
- 稿件说明：
移动端阅览
CAI Can, WU Kai-song, YUAN Xiao-hong, et al. Damage constitutive model of rock under medium and low strain rates[J]. 2015, 36(3): 795-802.
DOI：

CAI Can, WU Kai-song, YUAN Xiao-hong, et al. Damage constitutive model of rock under medium and low strain rates[J]. 2015, 36(3): 795-802. DOI： 10.16285/j.rsm.2015.03.025.

摘要

深部岩石的破碎与钻探中，岩石主要处在中低应变率的载荷作用下，而目前的研究还沿用中高应变率推导的动态损伤本构关系。从工程背景和试验角度分析了中低应变率下的岩石动力学特性，提出Maxwell体、Bingham体和损伤体的并联模型，借助拉普拉斯变换，引入基于岩石孔隙、裂隙劣化的损伤变量，导出了中低应变率下的岩石动态损伤本构模型。利用该模型对泥质砂岩和花岗岩在应变率为87 s-1、382 s-1、673 s-1时的应力-应变试验数据进行拟合，并将拟合结果与实测数值、原文献拟合曲线对比，结果表明该理论模型适用性较好。分析拟合参数可知，该动态损伤本构模型能够主动适应中低应变率两类情况，本构曲线和损伤变量的变化符合实际情况。

Abstract

When drilling is executed in the deep rock mass

rock is mainly subjected to loads with medium and low strain rates. However the medium and high strain rates damage constitutive model is still used instead

which doesn’t adapt to the real situation. The dynamic characteristics of rock under medium and low strain rates are analyzed from engineering background and practical experiments. A parallel model of rock

which is made up of Maxwell element

Bingham element and damage element

is proposed. The damage parameter based on degradation of pore and fissure is introduced with Laplace transformation. A new dynamic damage constitutive model of rock is derived. The proposed model is used to fit the stress-strain curves of argillaceous sandstone and granite at strain rates of 87 s-1

382 s-1 and 673 s-1. By comparing fitting results with the experimental data and literature results

it is shown that the proposed model is suitable for the behavior of rock under medium and low strain rates. With analyzing the fitting parameters

the proposed model can actively adapt to medium and low strain rates. The variations of constitutive curves and damage parameters are in agreement with the practical situation.

关键词

Keywords

references

Views

850

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Study of thermo-mechano-damage coupling behavior of surrounding rock of deep tunnel

Numerical simulation of mesomechanical characteristics of creep demage evolution for Jingping marble

Constitutive model of slate under compression with micromechanics

Constitutive model and seepage model of anisotropic rock in compression with micromechanics (Ⅱ)：models of rock under triaxial compression and an example of the models

Constitutive model and seepage model of anisotropic rock in compression with micromechanics(I): Theoretical models

Related Author

JIA Shan-po

WU Bo

CHEN Wei-zhong

WU Guo-jun

GAO Min

GONG Jun

SUN Jin-shan

CHEN Ming

Related Institution

School of Urban Construction, Yangtze University

State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

Faculty of Engineering, China University of Geosciences

Engineering Faculty, China University of Geosciences (Wuhan)

State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University

AI问答

⁰