固体火箭技术2017，Vol.40Issue(3)：325-329,396,6.DOI:10.7673/j.issn.1006⁃2793.2017.03.010
HTPB推进剂宽泛应变率下粘弹性本构模型研究
Research on the viscoelastic constitutive model of HTPB propellant over a wide range of strain rates
周海霞 1李世鹏 1谢侃 1隋欣 1杨龙1
作者信息
- 1. 北京理工大学 宇航学院,北京 100081
- 折叠
摘要
Abstract
To investigate the rate-dependent mechanical properties of hydroxyl-terminated polybutadiene ( HTPB) propellant, low(1.67×10-4~1.67×10-1 s-1), intermediate(1~100 s-1),and high strain rate (700~2500 s-1) compressive testing was per-formed,by using a universal testing machine,a hydraulic testing machine,and a split Hopkinson pressure bar ( SHPB) system,re-spectively. Results indicate that the compressive mechanical properties of HTPB propellant are rate-dependent and the stress at a given strain increases with an increase in strain rate. Generalized nonlinear ZWT model was employed to describe the compressive mechanical behaviours of HTPB propellant over a wide range of strain rates.Compasrison of the predicted values from the model and the experimental data shows that the number of Maxwell elements in the model should be at least 4.关键词
HTPB推进剂/压缩/应变率/应变率相关/本构模型Key words
HTPB propellant/compression/strain rate/strain-rate correlation/constitutive model分类
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周海霞,李世鹏,谢侃,隋欣,杨龙..HTPB推进剂宽泛应变率下粘弹性本构模型研究[J].固体火箭技术,2017,40(3):325-329,396,6.
