Abstract
This paper studies viscoelastic behaviors of composite solid propellant for multiple material layers of underwater intelligent equipment by theoretical modeling and finite element analysis (FEA). First, the viscoelasticity/damage coupled model is developed for hydroxyl-butyrate composite propellant layer, based on the Schapery integral-type viscoelastic model. Second, FEA by using ABAQUS-UMAT subroutine is performed to implement the model based on the recursive algorithm, and the tensile load–displacement curve by FEA is compared with the experimental results of solid propellant. Finally, distributions of the stress, strain and damage variable with increasing displacement loads are obtained. It is shown that the viscoelastic damage feature of solid propellant can be represented by the developed model and numerical technique well.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
