Characteristics of space and time-frequency distribution of the vibration in full-scale trunk gas pipeline explosion

MA Huayuan; LONG Yuan; LI Xinghua; ZHONG Mingshou; ZHOU Hui; WU Jianyuan

doi:10.11883/bzycj-2018-0123

Volume 39 Issue 4

Mar. 2019

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MA Huayuan, LONG Yuan, LI Xinghua, ZHONG Mingshou, ZHOU Hui, WU Jianyuan. Characteristics of space and time-frequency distribution of the vibration in full-scale trunk gas pipeline explosion[J]. Explosion And Shock Waves, 2019, 39(4): 042201. doi: 10.11883/bzycj-2018-0123

Citation:

MA Huayuan, LONG Yuan, LI Xinghua, ZHONG Mingshou, ZHOU Hui, WU Jianyuan. Characteristics of space and time-frequency distribution of the vibration in full-scale trunk gas pipeline explosion[J]. Explosion And Shock Waves, 2019, 39(4): 042201. doi: 10.11883/bzycj-2018-0123

Citation:

MA Huayuan, LONG Yuan, LI Xinghua, ZHONG Mingshou, ZHOU Hui, WU Jianyuan. Characteristics of space and time-frequency distribution of the vibration in full-scale trunk gas pipeline explosion[J]. Explosion And Shock Waves, 2019, 39(4): 042201. doi: 10.11883/bzycj-2018-0123

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Characteristics of space and time-frequency distribution of the vibration in full-scale trunk gas pipeline explosion

doi: 10.11883/bzycj-2018-0123

1.
Army Engineering University of PLA, Nanjing 210007, Jiangsu, China
2.
Baicheng Ordnance Test Center, Baicheng 137000, Jilin, China
3.
75833 Army of the PLA, Guangdong 510000, Guangzhou, China

Received Date: 2018-04-13
Rev Recd Date: 2018-06-01

Available Online: 2019-04-25

Publish Date: 2019-04-01

Abstract

Abstract

In this paper we investigated the damaging effect resulting from the vibration of pipeline gas explosion using a full-scale pipeline gas explosion test and, after data analysis, found that the attenuation of the pipeline vibration was more in line with the exponential distribution than with the classical power law distribution, and that the vibration intensity was not evenly distributed in the space, with a vibration enhancement in a specific direction. Adopting the improved MP-WVD algorithm, we also analyzed the time-frequency characteristics of the vibration in pipeline explosion and found that the main frequency range of vibration was 10−20 Hz, with a duration of 0.1−0.2 s as well as a multiple loading. Finally, we observed that the Rayleigh wave was stronger than the Love wave. These results can serve as reference for pipeline construction and accident investigation.
- pipeline explosion,
- exponential decay,
- time frequency characteristics of vibration,
- safety design

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References(14)

References

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