Vibration and noise characteristics of a cylinder body caused by the explosion in an explosion tank under negative pressure
WANG Quan1,2，LIN Chaojian1，LI Zhimin3，LU Junwei1，LI Rui1,2
1.School of Chemical Engineering, Anhui University of Science & Technology, Huainan 232001, China;
2.Engineering Laboratory of Explosive Materials and Technology of Anhui Province, Huainan 232001, China;
3.School of Civil Engineering and Architecture, Anhui University of Science & Technology, Huainan 232001, China
In order to study the vibration and noise characteristics caused by the explosion inside a vessel under negative pressure, a set of 34.8 L vacuum-pumped explosive vessel devices was developed.A single industrial detonator No.8 was used as the explosion source in the experiments, and the vibration velocity and the sound pressure level of explosion noise were measured by a NuBox8016 blasting vibration tester and a SZ4A noise vibration tester respectively.The vibration signal was analyzed by the fast Fourier transform(FFT) and empirical mode decomposition(EMD) method.The results show that with the increase of vacuum degree, the peak vibration speed of the cylinder and the sound pressure level of explosion noise all show a downward trend.When the vacuum pressure in the cylinder is -99 kPa, the harmful effects of explosions are effectively attenuated.Compared with the normal pressure condition, the peak vibration speed is attenuated by 70%, and the maximum noise sound pressure level is reduced by 18.3%.According to the FFT and EMD results, the main vibration frequency of the cylinder increases with the increase of vacuum degree, and the number of IMF components with high contribution rate increases.The test and analysis results have guiding significance for exploring the explosion vibration and attenuating its noise signal under negative pressure, as well as for extending the engineering the application of vacuum explosions.
汪泉1,2，林朝键1，李志敏3，陆军伟1，李瑞1，2. 负压条件下爆炸罐内爆炸引起筒体振动及噪声特性[J]. 振动与冲击, 2021, 40(6): 135-139.
WANG Quan1,2，LIN Chaojian1，LI Zhimin3，LU Junwei1，LI Rui1,2. Vibration and noise characteristics of a cylinder body caused by the explosion in an explosion tank under negative pressure. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(6): 135-139.
［1］ZAMANI E , LIAGHAT G H .Explosive welding of stainless steel-carbon steel coaxial pipes［J］.Journal of Materials Science, 2012, 47(2):685-695.
［2］ARAB A , GUO Y S , ZHOU Q , et al.Joining AlCoCrFeNi high entropy alloys and Al-6061 by explosive welding method［J］.Vacuum, 2020,174:109221.
［3］AKBARI-MOUSAVI S A A , BARRETT L M , AL-HASSANI S T S .Explosive welding of metal plates［J］.Journal of Materials Processing Tech, 2008, 202(1/2/3):224-239.
［4］FINDIK F .Recent developments in explosive welding［J］.Materials & Design, 2011, 32(3):1081-1093.
［5］史长根, 洪津, 蒋国良, 等.爆炸焊接危害机理分析［J］.爆破器材, 2009, 38(3):28-30.
SHI Changgen, HONG Jin, JIANG Guoliang, et al.Harm mechanism analysis of explosive welding ［J］.Explosive Materials, 2009, 38 (3): 28-30.
［6］LI H, LI X, LI J, et al.Application of coupled analysis methods for prediction of blast-induced dominant vibration frequency［J］.Earthquake Engineering and Engineering Vibration, 2016, 15(1):153-162.
［7］张立国, 龚敏, 于亚伦.爆破振动频率预测及其回归分析［J］.辽宁工程技术大学学报, 2005(2):187-189.
ZHANG Liguo, GONG Min, YU Yalun.Forecast and regression analysis of blasting vibration frequency ［J］.Journal of Liaoning Technical University, 2005 (2): 187-189.
［8］谢全民, 龙源, 钟明寿, 等.小波与分形组合分析技术在爆破振动信号分析中的应用［J］.振动与冲击, 2011, 30(12):120-124.
XIE Quanmin, LONG Yuan, ZHONG Mingshou, et al.Blasting vibration signal analysis with wavelet and fractal portfolio analysis technique ［J］.Journal of Vibration and Shock, 2011, 30 (12): 120-124.
［9］WANG Q , GONG J , LI Z M , et al.Vibration characteristics analysis of composite double-layer explosive vessel shell subjected to explosion loading［J］.Shock and Vibration, 2018, 2018:3714798.
［10］汤有富, 汪泉, 朱恺波, 等.基于HHT变换的小水池水下爆炸振动分析［J］.工程爆破, 2017(1):32-36.
TANG Youfu, WANG Quan, ZHU Kaibo, et al.Underwater explosion vibration analysis based on HHT transform in small pond ［J］.Engineering Blasting, 2017 (1): 32-36.
［11］张立国, 于亚伦.爆破振动主振频率与质点速度峰值关系的研究［J］.有色金属（矿山部分）,2005,57(4):32-34.
ZHANG Liguo, YU Yalun.Study on the relationship between main vibration frequency of blasting vibration and peak particle velocity ［J］.Nonferrous Metals(Mining Section), 2005,57 (4): 32-34.
［12］纪冲, 龙源, 刘建青.爆破冲击性低频噪声特性及其控制研究［J］.爆破, 2005(1):97-100.
JI Chong, LONG Yuan, LIU Jianqing.Study on the property and control methods of low frequency blasting noise ［J］.Blasting, 2005 (1): 97-100.
［13］WANG I T.Field experiments and numerical analysis of the ground vibration isolation of shock wave propagation under explosion shock loading［J］.Vibration, 2019, 2(4): 300-310.
［14］PARKD , JEON B , JEON S .A numerical study on the screening of blast-induced waves for reducing ground vibration［J］.Rock Mechanics & Rock Engineering, 2009, 42(3):449-473.
［15］李晓杰, 闫鸿浩, 王小红, 等.局部真空爆炸焊接方法:ZL200810190904.X.［P］.2009-06-24.
［16］牛爱红.金属复合材料真空爆炸焊接实践与研究［J］.工程爆破, 2018(4):67-70.NIU Aihong.Research and practice of vacuum explosion welding for metal cladding product ［J］.Engineering blasting, 2018 (4): 67-70.
［17］李夕兵, 张义平, 刘志祥, 等.爆破震动信号的小波分析与HHT变换［J］.爆炸与冲击, 2005, 25(6):528-535.
LI Xibing, ZHANG Yiping, LIU Zhixiang, et al.Wavelet analysis and Hilbert-Huang transform of blasting vibration signal ［J］.Explosion and Shock Waves , 2005, 25 (6): 528-535.
［18］胡八一, 肖智强, 谷岩, 等.40 kg TNT当量爆炸塔的振动监测及分析［J］.爆炸与冲击, 2018(4):918-924.
HU Bayi, XIAO Zhiqiang, GU Yan, et al.Vibration monitoring and analysis of the 40 kg TNT equivalent blast containment chamber ［J］.Explosion and Shock Waves , 2018 (4): 918-924.
［19］国家安全生产监督管理总局．爆破安全规程：GB 6722—2014［S］.北京：中国标准出版社，2014.
［20］林大超, 张奇, 白春华.近地表爆炸地震的地面竖向振动速度的随机特性［J］.爆炸与冲击, 2000, 20(3):235-240.
LIN Dachao, ZHANG Qi, BAI Chunhua.Random property of ground vertical vibration velocity induced by near ground explosion seismic effect ［J］.Explosion and Shock Waves , 2000, 20 (3): 235-240.
［21］宫婕.爆炸载荷作用下爆炸容器动态力学响应及其爆炸有害效应控制研究［D］.安徽：安徽理工大学, 2018.
