Study on Correlation Characteristics of Static and Dynamic Explosion Temperature Fields

Source:
By:Liangquan Wang

DOI: https://doi.org/10.30564/frae.v2i4.1545

Abstract:

The warheads such as missiles and artillery shells have a certain speed of motion during the explosion. Therefore, it is more practical to study the explosion damage of ammunition under motion. The different speeds of the projectiles have a certain influence on the temperature field generated by the explosion. In this paper, AUTODYN is used to simulate the process of projectile dynamic explosion. In the experiment, the TNT spherical bare charges with the TNT equivalent of 9.53kg and the projectile attack speed of 0,421,675,1020m/s were simulated in the infinite air domain. The temperature field temperature peaks and temperature decay laws at different charge rates and the multi-function regression fitting method were used to quantitatively study the functional relationship between the temperature and peak temperature correlation calculations of static and dynamic explosion temperature fields. The results show that the temperature distribution of the dynamic explosion temperature field is affected by the velocity of the charge, and the temperature distribution of the temperature field is different with the change of the charge velocity. Through the analysis and fitting of the simulation data, the temperature calculation formula of the static and dynamic explosion temperature field is obtained, which can better establish the relationship between the temperature peak of the static and dynamic explosion temperature field and various influencing factors, and use this function. Relational calculations can yield better results and meet the accuracy requirements of actual tests.

References:

[1] Meng Bo. Research on dynamic explosion shock wave test and key technology [D]. North University of China, 2017. [2] Wang Jie. Research on the Testing and Evaluation Method of the Damage Power of a Cloud Explosion [D]. Nanjing University of Science and Technology, 2016. [3] Xing Li, Research on storage temperature measurement technology of explosion temperature field based on thermocouple, 2009, Nanjing University of Science and Technology. [4] Tian Peipei et al. Temperature field test of temperature and pressure bomb explosion based on infrared camera. Infrared Technology, 2016. 38 (03): 260-265. [5] Wu Meng. Research on numerical simulation of thermal effects of aerial explosion and thermal damage assessment [D]. Nanjing University of Science and Technology, 2013. [6] Zhang Rulin, Cheng Xudong, Zhang Yanmei, Jia Juanjuan. Numerical simulation experimental research on the action of airborne shock wave [J]. Experimental Technology and Management, 2017, 34 (02): 110-115. [7] Cheng Yuteng. Simulation and Experimental Study of Explosive Shock Wave of Warm Pressure Explosive in Different Environments [D]. Nanjing University of Science and Technology, 2017. [8] Jiang Haiyan, Li Zhirong, Zhang Yulei, Su Jianjun.Study on the characteristics of airborne shock wave of sports charges [J] .Chinese Journal of High Pressure Physics, 2017,31 (03): 286-294. [9] Xue Feng et al. Simulation analysis of explosive shock response of pyrotechnic products based on AUTODYN. Missile and Space Vehicle Technology, 2018 (02). [10] Xue Feng, Zhang Gang, Wang Fei, Han Ming, Yang Zeyu. Simulation Analysis of Explosive Response of Explosive Device Based on AUTODYN [J]. Missiles and Space Vehicles, 2018 (02): 115-120. [11] Wu Sai, Zhao Junhai, Zhang Dongfang, Wang Juan. Numerical analysis of explosion shock waves in free air [J]. Engineering Blasting, 2019, 25 (03): 16-31. [12] Yao Chengbao, Wang Hongliang, Pu Xifeng, Shou Liefeng, Wang Zhihuan. Numerical simulation of ground reflection of strong explosion shock waves in the air [J / OL]. Explosion and Shock: 1-9 [2019-09-20]. [13] Chen Longming, Li Zhibin and Chen Rong, Study on Shock Wave Characteristics of Dynamic Burst of Charges. Explosion and Shock: page 1-10.