Explosive blast overpressure space-time field reconstruction method

An explosion shock wave, shock wave technology, applied in the field of explosion shock wave overpressure space-time field reconstruction

Inactive Publication Date: 2013-03-13
ZHONGBEI UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a reconstruction method for explosion shock wave overpressure space-time field in view of the inadequacy of the existing local point layout test and strength test that cannot fully understand the shock wave propagation process. The distribution of the peak overpressure field of the explosion shock wave in the region

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  • Explosive blast overpressure space-time field reconstruction method
  • Explosive blast overpressure space-time field reconstruction method
  • Explosive blast overpressure space-time field reconstruction method

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Embodiment Construction

[0024] Taking the two-dimensional reconstruction of the overpressure field of the air explosion shock wave as an example, the present invention will be further described in detail in conjunction with the accompanying drawings.

[0025] Such as figure 1 As shown, the shock wave test system consists of a shock wave overpressure sensor array, a signal conditioning module, a synchronous A / D conversion module, a high-speed data transmission module, a data preprocessing module, a shock wave overpressure space-time field reconstruction module, and a computer. The sensor array converts the shock wave overpressure signal into an electrical signal, and through the signal conditioning module and the synchronous A / D conversion module, it is conditioned into a standard voltage signal and converted into a digital signal, and then the digital signal is transmitted to the computer through the high-speed data transmission module. The processing module and the overpressure space-time field reco...

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Abstract

An explosive blast overpressure space-time field reconstruction method adopts an overpressure sensor array in a blast test system to acquire blast signals, and utilizes a blast overpressure space-time field reconstruction module to reconstruct an explosive blast overpressure space-time field; during reconstruction, a tested area is first meshed, sensor array elements are arranged, an explosion point is then located, a blast velocity field and a blast peak overpressure field are reconstructed, and thereby therefore a blast peak overpressure field reconstruction result is obtained; in combination with the blast peak overpressure field reconstruction result of the point, each parameter of a 'modified Friedlander equation' is solved, so that blast overpressure space-time data are obtained; finally, the reconstructed data are converted into an image file, and thereby therefore the blast overpressure space-time field is visualized. The method provides a basis for the evaluation of the damage effectiveness of blast and the structure and performance of explosive; and meanwhile, the method also is an important means for evaluating the safety of personnel, the shock resistance of equipment and the affection of blast on the surrounding environment.

Description

technical field [0001] The invention belongs to the field of array signal processing and reconstruction, and in particular relates to a reconstruction method of explosion shock wave overpressure space-time field. Background technique [0002] With the advancement of society and science and technology, and the needs of national economic development, explosive technology is increasingly used in various fields such as transportation, construction of water conservancy and hydropower facilities, and the process of moving mountains and reclamation. While the explosion technology is widely used, the impact and harm of the explosion operation on the surrounding environment and building facilities have become the focus of attention. How to assess the power of the explosion, control the hazards of the explosion, and reduce the impact of the explosion operation on the surrounding environment are important contents of the explosion safety technology research. [0003] When the charge e...

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Application Information

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IPC IPC(8): F42B35/00
Inventor 郭亚丽王鉴韩焱王黎明杨光苏新彦
Owner ZHONGBEI UNIV
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