| 中应变率下动静组合加载岩石的本构模型 |
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| 引用本文： | 李夕兵,左宇军,马春德.中应变率下动静组合加载岩石的本构模型[J].岩石力学与工程学报,2006,25(5):865-874. |
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| 作者姓名： | 李夕兵 左宇军 马春德 |
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| 作者单位： | 中南大学,资源与安全工程学院,湖南,长沙,410083 |
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| 基金项目： | 中国科学院资助项目;湖南省重点实验室基金 |
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| 摘 要： | 阐述动静组合加载岩石的本构模型研究意义，并对国内外关于岩石动态本构模犁的研究方法进行分类。采用组合模型研究方法，将统计损伤模型和黏弹性模型相结合，分别建立中应变率下二维和三维受静载荷作用岩行在动载荷作用下的本构模型（动静组合加载本构模型）。对一维动静组合加载本构模掣用不同静应力的相关试验进行验证，其结果表明，利用该模型计算得到的本构曲线与试验结果具有较好的一致性。对于三维动静组合加载本构模型，采用动力三轴试验机加围压时对应的岩石动载本构关系进行验证。
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| 关 键 词： | 岩石力学 动载荷 动静组合加载 中应变率 本构模型 损伤 黏弹性 |
| 文章编号： | 1000-6915（2006）05-0865-10 |
| 收稿时间： | 2004-12-02 |
| 修稿时间： | 2004-12-022005-04-17 |
CONSTITUTIVE MODEL OF ROCK UNDER COUPLED STATIC-DYNAMIC LOADING WITH INTERMEDIATE STRAIN RATE |
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| LI Xibing,ZUO Yujun,MA Chunde.CONSTITUTIVE MODEL OF ROCK UNDER COUPLED STATIC-DYNAMIC LOADING WITH INTERMEDIATE STRAIN RATE[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(5):865-874. |
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| Authors: | LI Xibing ZUO Yujun MA Chunde |
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| Affiliation: | School of Resources and Safety Engineering, Central South University, Changsha, Hunan 410083, China |
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| Abstract: | The importance of study on constitutive model of statically loaded rock under dynamic loading is expounded,and the methods of dynamic constitutive model are classified according to the current studying.By way of combining statistic damage model and viscoelastic model,uniaxial and triaxial constitutive models of statically loaded rock under dynamic loading(coupled static-dynamic constitutive model) with intermediate strain rate are established.The verification experiment on 1D coupled static-dynamic constitutive model under different static loadings is designed and performed.It is found that there is a good agreement between experimental stress-strain curves and theoretical stress-strain curves.The 3D theoretical stress-strain curves under different strain rates are verified by test data. |
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| Keywords: | rock mechanics dynamic loading coupled static-dynamic loading intermediate strain rate constitutive model damage viscoelasticity |
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