膏体推进剂应力松弛谱分析  

Analysis of Stress Relaxation Spectrum of Pasty Propellant

作　　者：周超[1] 郑亚[1] 张家仙[1] 范红杰[2] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210049 [2]西安近代化学研究所,陕西西安710065

出　　处：《兵工学报》2008年第5期541-543,共3页Acta Armamentarii

摘　　要：利用RS300Haake流变仪测试了双基体系膏体推进剂的应力松弛特性，获得应力松弛模量随时间的关系。通过对实验数据的分析获得了膏体推进剂连续谱和离散谱，并对二者结果进行了分析，从松弛时间范围的角度得出离散谱求解方法在实际应用更有意义，通过分析松弛单元数目对松弛谱结果的影响，得出求离散谱时松弛单元一般取3～8个为宜。The experiment of stress relaxation of double-base pasty propellant was conducted by the rheometer RS300 Haake, the relation between relaxation modulus and time was obtained. The continuous and discrete relaxation spectra were obtained through analyzing experimental data. By contrasting the results of two methods, the discrete spectrum is more significant in practical application from the point of view of relaxation time scope. Three to eight relaxation time elements should be adopted in computing discrete relaxation spectrum, which is concluded by analyzing the effect of relaxation element number on relaxation spectrum result.

关 键 词：航空航天材料 膏体推进剂 连续松弛谱 离散松弛谱 黏弹性 

分 类 号：V513[航空宇航科学与技术—航空宇航推进理论与工程]