中文摘要：

采用不同升温速率3,5,10,25,105℃.min^-1分别对PBX-2炸药进行了烤燃试验,试验中用热电偶分别测试样品半径处和中心处的温度变化过程,通过冲击波超压测量分析了样品的反应程度,根据热分析和烤燃试验结果宏观上分析了PBX-2炸药在热作用下的响应规律。试验结果初步表明：热作用试验中PBX-2炸药随着升温速率升高反应程度降低。采用Arrhenius模型对PBX-2炸药在热作用下响应进行了数值模拟,模拟的炸药温度变化结果与试验测试结果基本一致。

英文摘要：

Cook-off tests for PBX-2 explosive with different heating rates of 3,5,10,25,105 ℃·min^-1 were carried out.Temperature changing processes in sample radius and sample center were recorded by thermocouples,and the reaction degree of PBX-2 explosive was gained by blast pressure gauges.Reaction behavior for PBX-2 explosive was analyzed macroscopically under heat effect.The results of the tests initially show that the reaction degree for PBX-2 explosive is reduced with high heating rate in cook-off test.Numerical simulation was made for PBX-2 explosive by Arrhenius method.Calculated temperature is accord with experimental result.