Study and Design of the Mitigation Structure of a Shell PBX Charge under Thermal Stimulation

Author:

Liang Jiahao1,Nie Jianxin1,Liu Rui1,Han Ming2,Jiao Gangling3,Sun Xiaole4,Wang Xiaoju5,Huang Bo5

Affiliation:

1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

2. The Eighth Military Representative Office of Air Force Equipment Ministry, Xi’an 710000, China

3. Naval Institute, Beijing 100161, China

4. Chongqing Hongyu Precision Industry Co., Ltd., Chongqing 402760, China

5. Xi’an Changfeng Research Institute of Mechanical-Electrical, Xi’an 710065, China

Abstract

To study the design method and pressure relief effect of the mitigation structure of a shell under the action of thermal stimulation, a systematic research method of theoretical calculation-simulation-experimental verification of the mitigation structure was established. Taking the shelled PBX charge as the test material, the pressure relief area that can effectively reduce the reaction intensity of the charge is obtained by theoretical calculation. The influence of the pressure relief hole area, distribution mode, and other factors on the pressure relief effect is calculated by simulation. The pressure relief effect of the mitigation structure was verified by the low-melting alloy plug with refined crystal structure for sealing the pressure relief hole and the cook-off test. The research results show that the critical pressure relief area is when the ratio of the area of the pressure relief hole to the surface area of the charge is AV/SB = 0.0189. When the number of openings increases to 6, the required pressure relief coefficient decreases to AV/SB = 0.0110; When the length/diameter ratio is greater than 5, the opening at one end cannot satisfy the reliable pressure relief of the shell. The designed low-melting-point alloy mitigation structure can form an effective pressure relief channel. With the increase in AV/SB from 0.0045 to 0.0180, the reaction intensity of the cook-off bomb is significantly reduced in both fast and slow cook-off, which improves the safety of the charge when subjected to unexpected thermal stimulation.

Funder

National Natural Science Foundation of China

Publisher

MDPI AG

Subject

Inorganic Chemistry,Condensed Matter Physics,General Materials Science,General Chemical Engineering

Reference26 articles.

1. Insensitive Munitions—Design Principles and Technology Developments;Powell;Propellants Explos. Pyrotech.,2016

2. Analysis of the effect of a venting structure on slow cookoff of Comp-B based on a universal cookoff mode;Wang;Explos. Shock Waves,2022

3. Robert, H., and Zachary, A. (2006, January 24–28). Spears Matthew Sanford. Advanced Precision Kill Weapon System (APKWS) IM Solutions. Proceedings of the Insensitive Munitions & Energetic Materials Technology Symposium (2006), Bristol, UK.

4. Stephen, K., and Fred, B. (2006, January 24–28). Joint General Purpose Bomb Insensitive Munitions Program. Proceedings of the Insensitive Munitions & Energetic Materials Technology Symposium (2006), Bristol, UK.

5. Tony, W. (2010, January 11–14). General Purpose Bomb Fast Cook-off Mitigation Techniques. Proceedings of the Insensitive Munitions & Energetic Materials Technology Symposium (2010), Munich, Germany.

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