充砂爆炸容器动态响应的试验研究

Experimental Study on the Dynamic Response of Explosion Containment Vessel Filled with Sand

通过试验研究了爆炸容器在充砂和空气两种环境下的动态响应规律,分析了填砂厚度、装药量对容器动态响应影响的机制,根据试验结果从装药密度、装药比例距离、容器壁厚与药径比三个方面分别提出了有利容器力学安全的临界值。试验结果表明:对与文中几何相似的钢质爆炸容器来说,当装药比例距离大于0.40m/kg1/3左右时,容器内填砂对其力学安全有利,即填砂情况下容器的环向应变峰值较大气环境下显著降低;从装药密度来说,当装药密度小于2.05kg/m3时,容器内填砂对其力学安全有利;从容器厚度与药柱半径之比δ/RTNT来说,当δ/RTNT值大于0.70时,容器内填砂对其力学安全有利。

The law of dynamic response of explosion containment vessel filled with sand or air was studied by the method of experiment, the mechanism of the dynamic response of vessel affected by the thickness of sand filled and charge mass were analyzed, the critical values to favorable mechanical safety for the vessel used in experiment and geometric similarity with it were given from density of charges in vessel, scaled - distance, ratio of thickness of vessel and radius of charge. Experimental results of explosion containment vessel filled by sand show that peak value of dynamic hoop strain were reduced obviously than explosion containment vessel filled by air if the sealed distance greater than about 0.40 m/kg^1/3 , or ratio of thickness of vessel and radius of charge greater than about 0.70, or density of charges in vessel less than about 2.05 kg/m^3.