为了指导爆容弹优化设计和日常维护，开展了炸药爆炸作用下20 L爆容弹响应特性研究，设计了不同质量三硝基甲苯（trinitrotoluene, TNT）爆容弹内爆炸试验，测量了爆容弹外壁面应变分布和变化规律，获得了爆容弹内部爆炸冲击超压；根据试验结果，校准了等比例仿真计算模型，利用AUTODYN程序计算了100 g TNT炸药爆炸后爆容弹内部冲击波传播规律，获得了爆炸场压力分布。结果表明，爆容弹内部压力仿真计算结果和试验结果基本相符；炸药爆炸作用下，爆容弹内部压力呈现出多峰叠加且压力基线上浮的复杂结构，最大压力出现在爆容弹拐角位置处，爆容弹外璧最大应变出现在爆心平面偏下的位置，应变最大振幅出现在起爆后10 s，显示出了结构响应相对于爆炸冲击作业的滞后效应和延迟效应。

In order to guide the optimal design and daily maintenance of explosive capacity bombs, the response characteristics of 20 L explosive capacity bombs under the explosion action of explosives were studied. Internal explosion tests of different masses of trinitrotoluene (TNT) explosive capacity bombs were designed. The strain distribution and variation law of the outer wall of the explosive capacity bomb were measured, and the internal explosion impact overpressure of the explosive capacity bomb was obtained. According to the test results, the equal-scale simulation calculation model was calibrated, and the propagation law of shock wave inside the explosive capacitor bomb after the explosive explosion was calculated, and the pressure distribution in the explosion field was obtained. The results show that the simulation results of internal pressure of explosive charge are basically consistent with the experimental results. Under the action of explosive explosion, the internal pressure of explosive capacitor presents a complex structure of multi-peaks, the maximum pressure appears at the corner of explosive capacitor, and the maximum strain of the outer wall of explosive capacitor appears at the lower position of the explosion center plane.