HTPB推进剂粘接界面细观蠕变试验及本构模型研究

Study on Meso-creep Test and Constitutive Model of HTPB Propellant Adhesive Interface

根据不同应力水平下HTPB推进剂粘接界面的蠕变试验,分析其蠕变特性,并对粘接结构的本构方程进行研究。结果表明:粘接界面的蠕变过程可分为三个阶段,蠕变律先减小,后增大,直至断裂;应力律和时间律本构模型能够很好的表示粘接结构的蠕变过程。

Based on the creep test of the interface of HTPB propellant under different stress levels,the creep characteristics are analyzed and the constitutive equations of the bonded structure are studied. The results show that the creep process can be divided into three stages,and the creep law decreases and then increases until it breaks. The stress law and the time law constitutive model can represent the creep of the bonding structure process well.