摘要
为掌握高聚物粘结炸药(PBX)内部弹性应变向塑性应变转化规律,应用时温等效原理推导80℃的HMX基PBX蠕变曲线,并由ANSYS有限元软件拟合得到基于修正时间硬化理论的蠕变模型,用此模型对温压时效处理过程的HMX基PBX加热加压阶段变形情况进行模拟,结果显示:温压时效处理(80℃、10MPa)使HMX基PBX产生应力加载方向的压缩变形,炸药柱直径和高度分别减小0.476mm和1.306mm,密度增大约0.047g·cm-3,表明温压时效处理方法能够对PBX起到加速蠕变的作用。
To analyze regular of the shift from internal elastic strain to plastic stain for polymer-bonded explosive（PBX）,creep curves for HMX based PBX under 80℃ were obtained by time temperature equivalence principle,and the creep model based on modified time hardening theory was obtained by ANSYS software.The deformation of HMX based PBX during the thermal-pressure process was simulated.Results shows that compression deformation occurs along the loading stress under thermal-pressure aging treatment（80 ℃,10MPa）for HMX based PBX with diameter and height reducing 0.476 mm,1.306 mm,respectively,and the density increasing 0.047 g·cm^-3,which confirms that the creep behavior of PBX can be accelerated by the thermal-pressure aging treatment.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2015年第6期543-547,共5页
Chinese Journal of Energetic Materials
基金
国家自然科学基金(11102189)
关键词
温压时效处理
高聚物粘结炸药(PBX)
时温等效原理
蠕变
变形
thermal-pressure aging treatment
polymer-bonded explosive （PBX）
time-temperature equivalence principle
creep
deformation
