Numerical analysis of viscoelastic Propellant grains subjected to Pressure load

Gowri Shankar, M C and Kumar, Nitesh and Jayashree, P K (2019) Numerical analysis of viscoelastic Propellant grains subjected to Pressure load. International Journal of Mechanical Engineering and Technology, 10 (1). pp. 1521-1527. ISSN 0976-6340

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Idealized solid propellant is models is analysed for thick sphere subjected to internal pressure, whose casing is made of composite materials,. Results obtained from present elements are compared with analytical results and 8 noded counterpart of MARC. Solid Rocket Motor (SRM) is developed based on casting method where solid propellant grains are cast into a composite or metallic casing. Generally, SRMs are exposed to extremeloading scenarios during storage, transportation, and firing, leading to cracks in the solid propellants. In this paper, Computational Finite Element Analysis is performed with developed 8 node quadrilateral, 9 node quadrilateral and 6 node triangular elements using Herrmann formulation to analyze stress and strain variations in the mid segments of the typical SRM subjected to pressure loading. The obtained results are compared with commercially available Finite element software

Item Type: Article
Uncontrolled Keywords: Finite element, Rocket motor, Internal pressure, Pressure loads, Propellant grain.
Subjects: Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 25 Feb 2019 06:34
Last Modified: 30 Apr 2019 06:07

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