| 单轴压缩下岩石材料体积效应的数值模拟 |
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| 引用本文： | 倪红梅,朱运华.单轴压缩下岩石材料体积效应的数值模拟[J].辽宁工程技术大学学报(自然科学版),2006,25(1):45-47. |
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| 作者姓名： | 倪红梅 朱运华 |
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| 作者单位： | 1. 平顶山工学院,土木工程系,河南,平顶山,467000
2. 河南理工大学,测量工程系,河南,焦作,454159 |
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| 基金项目： | 河南省自然科学基金资助项目(0511013100) |
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| 摘 要： | 为了探讨体积对岩石材料强度和变形及其破坏形式的影响规律，从岩石材料的非均质性出发，应用岩石破裂过程分析系统RFPA^2D对同长径比不同体积的岩石进行了单轴压缩下的数值模拟研究，模拟结果表明随着体积的增大，岩石的强度呈衰减趋势，但在体积增大某个值以后时，岩石强度便基本趋于稳定，模拟结果和实验结果相吻合。对一组不同均质度系数下岩石材料体积效应的数值模拟结果表明，岩石强度的体积效应根源于材料的非均质性。
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| 关 键 词： | 体积效应 岩石材料 非均质性 强度 数值模拟 |
| 文章编号： | 1008-0562(2006)01-0045-03 |
| 修稿时间： | 2003年10月4日 |
Numerical simulation on volume effect of rock specimens under uniaxial compression |
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| NI Hong-mei,ZHU Yun-hua.Numerical simulation on volume effect of rock specimens under uniaxial compression[J].Journal of Liaoning Technical University (Natural Science Edition),2006,25(1):45-47. |
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| Authors: | NI Hong-mei ZHU Yun-hua |
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| Abstract: | In order to discuss the effect of volume on the strength,deformation and failure forms of rock material,based on the heterogeneity of rock material,rock specimens of the same ratio of length to diameter but of different volumes were simulated numerically by RFPA2D,which shows that strength of rock will decrease with the increase of volume,but the strength will tend to be stable after the volume reaches a certain value.The simulation results tally well with experimental results.The results of numerical simulation on volume effect of rock material at a group of different homogeneity indexes show that the volume of rock strength results in the heterogeneity of rock material. |
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| Keywords: | volume effect rock material heterogeneity strength numerical simulation |
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