| 冲击荷载下岩石动态损伤演化研究 |
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| 引用本文： | 张华,高富强,陈龙伟.冲击荷载下岩石动态损伤演化研究[J].昆明理工大学学报(理工版),2011,36(2):1-5. |
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| 作者姓名： | 张华 高富强 陈龙伟 |
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| 作者单位： | 1. 昆明理工大学,国土资源工程学院,云南昆明,650093
2. 洛阳理工学院土木工程系,河南洛阳,471003 |
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| 基金项目： | 国家自然科学基金，云南省自然科学基金 |
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| 摘 要： | I型裂纹破坏为岩石材料在冲击荷载作用下的主要破坏方式.通过假设岩石材料宏观上是一个均匀连续体,而细观上其内部则包含了大量随机分布的微裂纹等损伤缺陷;研究了岩石材料在冲击荷载下裂纹的成核、发展以及内部损伤演化规律;借助于宏细观相结合的理论建立了表征岩石材料细观结构及其损伤演化过程中的某种特征参量与宏观力学参数之间的关系方程.
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| 关 键 词： | 冲击荷载 微裂纹 动态损伤 |
Dynamic Damage Evolution Research of Rock in Impact Loading |
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| ZHANG Hua,GAO Fu-qiang,CHEN Long-wei.Dynamic Damage Evolution Research of Rock in Impact Loading[J].Journal of Kunming University of Science and Technology(Natural Science Edition),2011,36(2):1-5. |
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| Authors: | ZHANG Hua GAO Fu-qiang CHEN Long-wei |
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| Affiliation: | 1.Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;2.Department of Civil Engineering,Luoyang Institute of Science and Technology,Luoyang,Henan 471003,China) |
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| Abstract: | Mode I crack failure is a failure mode of rock material in impact loading.Based on the hypothesis that rock material is homogeneous continuum in macro sense but in fact there are a large number of randomly distributed micro cracks,the nucleation,development,and internal damage evolution of rock material cracks in impact loading are studied in this paper.The dynamic damage equation of the rock material with micro-macro theory of the combination of some characteristic parameters and mechanics parameters is established to describe material microstructure and its damage evolution. |
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| Keywords: | impact loading micro crack dynamic damage |
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