Abstract
As a typical viscoelastic material,the mechanical behavior of a solid propellant has strong temperature dependence and there are differences in the anti-overloading capability of the charge at different initial temperatures.Based on uniaxial compression tests of a modified double-base(CMDB)propellant at a wide range of strain rates under 50 ℃and -40 ℃ temperature conditions,the constitutive model and strength criterion of CMDB propellant under these conditions have been established from the perspective of material property rate correlation.Based on the wide strain rate-based Prony constitutive model,the finite element analysis of a certain column-type charge has been carried out.Through the coupling analysis of the stress field and the strain rate field,the maximum anti-overloading amplitudes of the charge under high and low temperature conditions have been verified.The results show that the limit of overloading resistance of the charge is about 16 000g under 50 ℃,whereas it is 14 000g under -40 ℃.
| Translated title of the contribution | Research on the influence of temperature on the anti-overload performance of propellant grain |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 372-376 |
| Number of pages | 5 |
| Journal | Guti Huojian Jishu/Journal of Solid Rocket Technology |
| Volume | 42 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Jun 2019 |