Study on the Influence of Temperature Rise in Penetration of Anti-Ship Warhead on Charge Stability

Abstract

Based on the thermo-solid coupling algorithm of LS-DYNA, a calculation model of the penetration control of a semi-armor warhead is established. The numerical simulation of the semi-armor-piercing warhead penetrates the 16mm thick 945 steel plate with the speed of 0.8Ma-2.6Ma The temperature distribution of the shell and the temperature of the shell and the charge were obtained by considering the effect of plastic work heat transfer and friction heat on the shell and charge temperature. The numerical simulation and theoretical analysis show that the maximum temperature of the shell and the charge increases with the increase of the penetration velocity, and the maximum temperature of the shell surface is lower than the phase transition temperature of the shell material at the penetration speed of 0.8Ma. When the penetration speed is 2.6Ma, the maximum temperature inside the charge is lower than the critical hot spot temperature of the main charge explosion, which will not cause the main charge to be exploded, which has little effect on the stability of the charge during the penetration process. The numerical simulation results are in good agreement with the experimental results.