Abstract: It is an important part of protective engineering to give full play to the wave-absorbing efficiency of the wave-absorbing layer. However, dry loose sand, a traditional wave-absorbing material used in the layered protective structure, cannot effectively exert wave-absorbing efficiency under the two extremely unfavorable conditions of saturated water and freezing. Improving the wave-absorbing reliability of the wave-absorbing layer in the extremely unfavorable environment is of great significance for the survivability of the protective structure in wartime. The wave-absor-bing efficiency of alumina thin-walled hollow particles under impact load was tested by split Hopkinson bar and compared with that of standard sand. The test results show that the alumina thin-walled hollow particles have obvious advantages over the traditional wave-absorbing materials both in the condition of saturated water and in the condition of freezing. Alumina thin-walled hollow particles can reflect more incident energy, thereby reducing the energy coupled into the material. At the same time, for the energy coupled into the material, its dissipation capacity is also stronger than that of standard sand. The efficient wave-absorbing ability of alumina thin-walled hollow particles under saturated water and freezing conditions is mainly due to the broken of a large amount of hollow particles under impact load, which releases the internal gas phase of the shell and increases the compressibility of the medium. Compared with dry loose sand, the dynamic stress-strain curve of the alumina thin-walled hollow particles is smoother, and its compression modulus and the peak stress are smaller, but its peak strain is greater. The large size of alumina thin-walled hollow particles can further improve the wave-absorbing efficiency of the material under extremely unfavorable conditions, and improve the efficiency and cost ratio in engineering applications. The work provides a low-cost and high-reliability solution to solve the problem of water damage and freezing damage in protection engineering.
通讯作者:
* 范鹏贤,陆军工程大学爆炸冲击防灾减灾国家重点实验室副教授、博士研究生导师,国土地下空间高效防护研究所副所长。2004年大连理工大学土木工程专业本科毕业,2007年解放军理工大学防灾减灾工程及防护工程专业硕士毕业,2011年解放军理工大学防灾减灾工程及防护工程专业博士毕业。目前主要从事岩石力学、地下工程安全与防护等方面的研究工作。发表论文100余篇,包括Rock Mecha-nics and Rock Engineering、Canadian Geotechnical Journal、Thin-walled Structures、《岩石力学与工程学报》等。fan-px@139.com
1 Zhao K. The Attenuation and dispersion effects on explosive wave of layered protective engineering. Ph. D. Thesis, University of Science and Technology of China, China, 2007 (in Chinese). 赵凯. 分层防护层对爆炸波的衰减和弥散作用研究. 博士学位论文, 中国科学技术大学, 2007. 2 Zhou H, Ren H Q, Wu X Y, et al. Explosion and Shock Waves, 2022, 42(11), 3 (in Chinese). 周辉, 任辉启, 吴祥云, 等. 爆炸与冲击, 2022, 42(11), 3. 3 Liu X, Xu H F, Fan P X, et al. Rock and Soil Mechanics, 2021, 42(8), 2099 (in Chinese). 刘鑫, 许宏发, 范鹏贤, 等. 岩土力学, 2021, 42(8), 2099. 4 Li S, Xiong Z M, Fan P X, et al. Applied Sciences-Basel, 2022, 12(18), 9140. 5 Huang X L, Qi S W, Xia K W, et al. Journal of Applied Geophysics, 2016, 130, 1. 6 Liu X, Xu H F, Fan P X, et al. KSCE Journal of Civil Engineering, 2023, 27, 3097. 7 Wang L J, Fan L F, Du X L. Rock Mechanics and Rock Engineering, 2022, 55(7), 3807. 8 Yu B Y, Chen Z Q, Dai Y W, et al. Journal of Mining and Safety Engineering, 2018, 35(1), 197 (in Chinese). 郁邦永, 陈占清, 戴玉伟, 等. 采矿与安全工程学报, 2018, 35(1), 197. 9 Qi Y, Huang J J, Chen M X. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(2), 252 (in Chinese). 祁原, 黄俊杰, 陈明祥. 力学学报, 2015, 47(2), 252. 10 Krivtsov V A. Journal of Applied Mechanics and Technical Physics, 1976, 15(4). 576. 11 Lyakhov G M, Okhitin V N, Chistov A G. Journal of Applied Mechanics and Technical Physics, 1974, 13(3), 390. 12 Qian Q H, Wang M Y. Shock explosion effect in rock and soil, Beijing National Defense Industry Publishing House, China, 2010, pp.247 (in Chinese). 钱七虎, 王明洋. 岩土中的冲击爆炸效应, 北京国防工业出版社, 2010, pp.247. 13 Li S, Xiong Z M, Fan P X, et al. Geofluids, 2022, 169, 1. 14 Liu G M, Zhang B, Wang L, et al. Earth Science, 2022, 21(4), 1. 15 Fu T T, Zhu Z W, Cao C X. Acta Mechanica, 2019, 230(5), 1869. 16 Barlas N A, Kravets V G, Lyakhov G M. Journal of Applied Mechanics and Technical Physics, 1979, 20(1), 113. 17 Huang J Y, Lu L, Fan D, et al. Scripta Materialia, 2016, 111, 114. 18 Ye Z B. New composite protective materials of the dynamic static mechanical properties and engineering application. Ph. D. Thesis, University of Science and Technology of China, China, 2018 (in Chinese). 叶中豹. 新型复合防护材料的动静态力学特性和工程应用研究. 博士学位论文, 中国科学技术大学, 2018. 19 Ye Z B, Li Y C, Zhao K, et al. Journal of Experimental Mechanics, 2017, 32(3), 377 (in Chinese). 叶中豹, 李永池, 赵凯, 等. 实验力学, 2017, 32(3), 377. 20 Sun X W, Li Y C, Ye Z B, et al. Explosion and Shock Waves, 2017, 37(4), 643 (in Chinese). 孙晓旺, 李永池, 叶中豹, 等. 爆炸与冲击, 2017, 37(4), 643. 21 Yan P Z, Li S, Fan P X, et al. Journal of Army Engineering University of PLA, 2023, 2(3), 41 (in Chinese). 严鹏志, 李胜, 范鹏贤, 等. 陆军工程大学学报, 2023, 2(3), 41. 22 Gray G, Classic Split-Hopkinson Pressure Bar Testing, American Society for Metals, America, 2000, pp.462. 23 Zhang D, Zhu Z W, Liu Z J. Shock and Vibration, 2016, 5, 1. 24 Ma Q Y, Ma D D, Yuan P, et al. Advances in Materials Science and Engineering, 2018, 34(2), 1. 25 Ma L J, Li Z, Wang M Y, et al. Powder Technology, DOI:10.1016/j.powtec.2018.10.037.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2024, Vol. 38 
