Structural Dynamics of Solid Propellants with Frequency Dependent Properties
Abstract
This paper addresses the dynamic behaviour of solid propellants as linear viscoelastic materials with frequency dependent mechanical properties. Experimental data of a typical propellant are used to highlight the frequency dependence of the storage modulus and the loss factor. This phenomenon is then tackled in a transient analysis of a Ariane-5 booster-like stage. Finite element computations are performed with Code_Aster and dedicated user developments. Results are compared with a constant elastic approach, in order to show the influence of the frequency dependence on the structural dynamics of the booster-like stage.
- Publication:
-
12th European Conference on Spacecraft Structures, Materials and Environmental Testing
- Pub Date:
- July 2012
- Bibcode:
- 2012ESASP.691E.123M