| 岩体损伤-弹塑性非线性有限元分析 |
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| 引用本文： | 李九红,杨菊生. 岩体损伤-弹塑性非线性有限元分析[J]. 岩石力学与工程学报, 2000, 19(6): 707-707 |
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| 作者姓名： | 李九红 杨菊生 |
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| 作者单位： | 西安理工大学水利水电学院西安 710048 |
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| 基金项目： | 清华大学结构工程与振动订开放试验室研究基金(9227)资助项目. |
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| 摘 要： | 根据岩体破坏的特点, 在不同三维应力水平上分别用正交各向异性非线弹性损伤、弹塑性及三轴破坏强度准则, 研究了在受拉区损伤2开裂、在受压区损伤2塑性、在拉压区损伤2塑性2开裂破坏, 以及开裂后的非线性破坏特性。为确定结构的潜在安全度提供了新的途径。
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| 关 键 词： | 开裂破坏 损伤 弹塑性 岩体 有限元分析 |
| 文章编号： | 1000-6915(2000)06-0707-05 |
| 收稿时间： | 2000-07-06 |
| 修稿时间： | 2000-07-06 |
THE ELASTO-PLASTICAL NONLINEAR FEM ANALYSIS ON ROCK DAMAGE |
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| Li Jiuhong,Yang Jusheng. THE ELASTO-PLASTICAL NONLINEAR FEM ANALYSIS ON ROCK DAMAGE[J]. Chinese Journal of Rock Mechanics and Engineering, 2000, 19(6): 707-707 |
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| Authors: | Li Jiuhong Yang Jusheng |
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| Abstract: | According to the mechanical characters of rock masses, the nonlinear failure features of the damage cracking in tension zone, the damage plasticity in compressive zone, the damage plasticity cracking in tension compressive zone, and after cracking, are studied under the different 3D stress level by means of orthotropic nonlinear elastic damage mechanics, elasto plasticity theory and triaxial failure criterion. The corresponding computation model of non linear FEM is provided. A new path is proposed to determine the latent safety degree of structure. |
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| Keywords: | cracking failure damage elasto plasticity latent safety degree |
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