The response characteristics of the warhead under thermal stimuli conditions are important to the safety improvement. The goal of this study is to obtain data on the warhead in the fast cook-off process. In this paper, a numerical calculation method is proposed, whose reliability is supported by comparison with experimental results. Through the numerical calculation, the temperature distribution, temperature change, and ignition time are acquired. The numerical results show that the ignition time is 76 s after the warhead started to burn and that the maximum temperature of the explosive’s outer surface is 238.3 °C at the ignition time. The fast cook-off experiment of the warhead is implemented so as to get the flame temperature and reaction grades that are not available through numerical calculation. The experimental results show that the overpressure fails to reach the preset minimum value which is equivalent to 6 kg of TNT and that the reaction grade is deflagration. The research results have reference value for the design of the warhead and the reduction of detonation risks.

弹头在热刺激条件下的响应特性对提高安全性很重要。这项研究的目的是获得快速烹饪过程中弹头的数据。本文提出了一种数值计算方法，其可靠性得到了与实验结果对比的支持。通过数值计算，得到温度分布、温度变化和点火时间。数值结果表明，弹头开始燃烧后点火时间为76 s，点火时炸药外表面最高温度为238.3℃。进行弹头快速烧毁实验，得到数值计算无法得到的火焰温度和反应等级。实验结果表明，超压未达到预设的最小值，相当于 6 kg TNT，反应等级为爆燃。研究成果对弹头设计和降低爆轰风险具有参考价值。