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首页> 外文期刊>Combustion, Explosion, and Shock Waves >Experimental Study on the Dynamic Strain of a Thin-Walled Pipe in the Gas Cloud Explosion with Ignition Energy
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Experimental Study on the Dynamic Strain of a Thin-Walled Pipe in the Gas Cloud Explosion with Ignition Energy

机译：燃气云爆炸带点火能量薄壁管动态应变的实验研究

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This paper describes an experimental study of the flame propagation mechanism for the combustible gas explosion in a closed pipe with a length of 12 m and an internal diameter of 0.125 m, which is carried out for different values of the ignition energy. The results show that an increase in the ignition energy results in greater explosive intensity, maximum peak pressure, and dynamic strain of the thin wall in the whole process. Moreover, the dynamic strain of the thin-walled pipe increases suddenly owing to arrival of a precursor shock wave and then vibrates for a long time, which is induced by the wave reflected back and forth. In addition, there is good agreement between the dynamic strain signals and pressure wave signals. These research results can provide a theoretical basis for industrial explosion accident assessments as well as explosion and shock resistance designs, which provides guidance not only for industrial safety, but also for prevention and mitigation of explosion accidents.
机译：本文介绍了一种封闭管中可燃气体爆炸的火焰传播机构的实验研究，该封闭管的长度为12μm，内径为0.125μm，这是针对点火能量的不同值进行的。结果表明，点火能量的增加导致整个过程中薄壁的更大的爆炸强度，最大峰值压力和动态应变。此外，由于前体冲击波的到达，薄壁管的动态应变突然增加，然后长时间振动，这是由来回反射的波引起的。此外，动态应变信号和压力波信号之间存在良好的一致性。这些研究结果可以为工业爆炸事故评估以及爆炸和抗冲击设计提供理论依据，这提供了不仅用于工业安全的指导，而且为防止和减轻爆炸事故提供了指导。

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