冲击荷载下强度比对类复合岩样能量耗散影响的研究

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摘要利用直径为50mm的分离式霍布金森压杆试验装置对类复合岩样进行动态冲击试验，研究了不同应变率、入射波的不同入射顺序、不同强度比、不同入射角度对岩体能量耗散的影响。试验结果表明：类复合岩样的入射能、吸收能、能量利用率均随应变率的增大而增大；不同入射顺序对吸收能和能量利用率有不同影响，且随着强度比增大，不同入射顺序的影响逐渐减小；当应变率为270s-1左右时，不同强度比类复合岩样的能量利用率均随着入射角增大呈现先减小后增大的趋势，在入射角为30°时能量利用率最小，入射角90°时能量利用率最大。

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	温森1
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	吴斐1
	李胜1
	盛桂琳1
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关键词 ：分离式霍布金森压杆（SHPB）, 类复合岩样, 不同入射角, 强度比, 能量耗散

Abstract：The dynamic impact test of composite rock samples was carried out by using the split Hopkinson pressure bar test device with a diameter of 50 mm. The effects of different strain rates, different incident sequences of incident waves, different strength ratios and different incident angles on the energy dissipation of rock mass were studied. The test results show that the incident energy, absorption energy and energy utilization rate of composite rock samples increase with the increase of strain rate. Different incident order has different influence on absorption energy and energy utilization rate, and with the increase of intensity ratio, the influence of different incident order decreases gradually. When the strain rate is about 270s−1, the energy utilization rates of composite rocks samples with different strength ratios decrease first and then increase with the increase of incident angle. When the incident angle is 30°, the energy utilization rate is the smallest, and when the incident angle is 90°, the energy utilization rate is the largest.

Key words： split Hopkinson pressure bar (SHPB) composite rock samples different incidence angles strength ratios energy dissipation

收稿日期: 2022-05-11 出版日期: 2023-07-15

引用本文:

温森1,2，吴斐1，李胜1，盛桂琳1,2. 冲击荷载下强度比对类复合岩样能量耗散影响的研究[J]. 振动与冲击, 2023, 42(13): 111-118.
WEN Sen1,2, WU Fei1, LI Sheng1, SHENG Guilin1,2. Effects of strength ratio on energy dissipation of quasi-composite rock samples under impact load. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(13): 111-118.

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http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I13/111

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