含能材料2017，Vol.25Issue(3)：184-190,7.DOI:10.11943/j.issn.1006-9941.2017.03.002
温度对HTPB推进剂疲劳特性的影响
Effect of Temperature on Fatigue Properties of HTPB Propellant
摘要
Abstract
To study the fatigue properties of hydroxyl terminated polybutadiene (HTPB) propellant at different temperatures,the constant stress control fatigue cyclic loading tests at different temperatures were carried out.Taking peak strain as damage factor,based on damage mechanics and viscoelastic theory,a three-stage model of fatigue damage with temperature effect of HTPB propellant was established.The results show that with increasing temperature,the fatigue life of materials decreases,the fracture strain increases.The peak strain in the process of fatigue obviously has three stages of evolution:initial deformation stage,stable development stage and acceleration stage,which is the macro-behavior of material damage.The three-stage model established overcomes the shortcomings of two-phase model that can't consider macroscopic crack propagation.By fitting the model parameters,the theoretical results of 213 K and 333 K are predicted by linear regression method,which are in good agreement with the experimental results,therefore it can be used to characterize the damage evolution law of materials very well.关键词
端羟基聚丁二烯(HTPB)推进剂/应力控制/疲劳寿命/损伤因子/损伤模型Key words
hydroxyl terminated poly-butadiene(HTPB) propellant/stress control/fatigue life/damage factor/damage model分类
军事科技引用本文复制引用
梁蔚,吕庆山,陈雄,许进升,童心,闫晓晶..温度对HTPB推进剂疲劳特性的影响[J].含能材料,2017,25(3):184-190,7.基金项目
国家自然科学基金(51606098),江苏省自然科学基金(BK20140772),中央高校基本科研业务费专项资金(30915011301) （51606098）
