Simulation material experiment on the dynamic mechanical properties of jointed rock affected by joint-filling material

被引：0
|
作者：
Yang R.-S. [1 ]
Wang M.-Y. [1 ]
Yang Y. [1 ]
Wang J.-G. [2 ]
机构：
[1] School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing
[2] College of Civil and Architectural Engineering, Yunnan Agricultural University, Kunming
来源：
| 1600年 / Chinese Vibration Engineering Society卷 / 35期
关键词：
Dynamic response; Energy analysis; Impact loading; Joint rock; Simulation experiment; Spilt Hopkinson pressure bar (SHPB);
D O I：
10.13465/j.cnki.jvs.2016.12.019
中图分类号：
学科分类号：
摘要：
Joint model specimens were made with similar materials that had the same properties as the real joint rock. The impact experiment was then carried out on the artificial jointed rock specimens with the help of an SHPB test apparatus (50 mm). Rock dynamic mechanics properties that are affected by the joint filling material were then acquired. It is found that with the strength of the filling material reduced, the joint specimen quantitative dynamic elastic modulus decreases and the dynamic compressive strength attenuates with an index form. The specimens filled with soft material showed plastic deformation and failure, the overall failure pattern of specimens associated with filling material properties. Reflection energy ratio showed an increased trend as the strength of the specimens decreased. Transmission energy ratio reduced. The energy dissipation ratio was associated with the filling material properties. The damage variable and the impact velocity met the function of d=-0.11v2+1.31v-3.01, with a damage value d of 0.458, when the test specimens failed. © 2016, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：125 / 131
页数：6
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