【摘要】 研究了一种含TATB的高聚物粘结炸药(PBX)的蠕变性能及其蠕变柔量函数形式。不同温度下的压缩破坏实验表明,其力学性能与温度强烈相关,实验中得到一个明显的转变温度区间(40～60℃)。多个温度条件下的压缩蠕变实验表明,高聚物粘结炸药可以视为简单热流变材料,符合时温等效原理。选取55℃作为参考温度,获得长时蠕变主曲线和柔量曲线。利用7级Prony级数模拟的蠕变柔量函数与试验叠合主曲线能很好地吻合。更多还原

【Abstract】 The compressive creep behavior of PBX based on TATB was investigated. Experiments were taken at different temperatures to identify the strong temperature dependence of the mechanical properties. An obvious temperature transition range related to the jumping of mechanical behavior,i.e. from 40 ℃ to 60 ℃,was obtained. It was proper to choose 55 ℃ as reference temperature for master curve of creep compliance function. The shift factor ( a T) was obtained with the curve transforming and used to calculate the two coefficients of WLF equation. Prony series with seven terms are proved to be good fitting for the creep compliance master curve.更多还原