[1]贾善坡林建品刘团辉.温度作用下岩石热弹性模型及数值模拟[J].郑州大学学报(工学版),2015,36(02):52-56.[doi:10.3969/ j.issn.1671 -6833.2015.02.012]
　JIA Shan-po,LIN Jian-pin,LlU Tuan-hui,et al.A Thermo-elasto-plastic Constitutive Model of the Rock underthe Temperature Effect and Its Numerical Implementation[J].Journal of Zhengzhou University (Engineering Science),2015,36(02):52-56.[doi:10.3969/ j.issn.1671 -6833.2015.02.012]
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温度作用下岩石热弹性模型及数值模拟()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
36
期数:
2015年02期
页码:
52-56
栏目:
出版日期:
2015-04-30

文章信息/Info

Title:
A Thermo-elasto-plastic Constitutive Model of the Rock underthe Temperature Effect and Its Numerical Implementation
作者:
贾善坡1林建品2刘团辉3
1.长江大学城市建设学院,湖北荆州434023;2.华北油田勘探开发研究院,河北任丘062552
Author(s):
JIA Shan-po1; 2; LIN Jian-pin2; LlU Tuan-hui2; CUI Li-hua2; TANG Xiao-qi2; JIANG Su-ping2
1.School of Urban Construction , langtze University,Jlingzhou 434023,China; 2.Exploration and Development Research Instituteof Huabei Oilfield,Renqiu 062552,China
关键词:
岩石力学; 热弹塑性; 应变软化; 修正 Mohr-Coulomb准则
Keywords:
rock mechanics; thermo-elasto-plastic; strain-softening;  modified Mohr-Coulomb criterion
分类号:
TU457
DOI:
10.3969/ j.issn.1671 -6833.2015.02.012
文献标志码:
A
摘要:
深入研究温度影响下的岩石受力、变形破坏机制及力学模型,对于保证岩石地下工程的安全和稳定具有十分重要的意义.从温度对岩石材料力学性质的影响出发,以修正Mohr-Coulomb 准则为基础，建立了温度作用下的岩石热–弹塑性耦合本构模型,探讨了模拟岩石应变软化行为的方法;论述了隐式本构积分算法的主要内容,以ABAQUS软件为平台,编制了材料本构计算子程序.对三轴压缩试验进行了一系列数值模拟,其应力–应变曲线与已有实验规律表现出较好的一致性,所建立的模型能够较好地反映出岩石由于温度影响所表现的脆–塑性过渡,证明了模型的有效性.
Abstract:
Further study of the mechanism and law of rock deformation and breakage under the temperatureeffect has great significance to the safety and stability of the underground rock engineering. Based on the evo-lution characteristics of rock mechanics parameters under the temperature effect,a new thermo-elasto-plasticconstitutive model with improved Mohr-Coulomb criterion is presented,which can depict the temperature effectand softening behaviours of the rock. The main contents of the implicit constitutive integration algorithm arediscussed systematically; and the consistent stiffness matrix is deduced. Based on the implicit Euler stress in-tegration algorithm,the UMAT subroutine of the model is developed in ABAQUS. The numerical simulationunder various stress states and temperatures shows that the numerical simulations agree with the experimentalrules and the proposed model is able to depict effectively the main features of brittle-plastic transition of rock.
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