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Structural Integrity Study on a New Semi-Dumbbell Ring Groove of Solid Rocket Motor Grain
Fengnan Guo, Yanxiang Ren, Pengfei Liu, Yiming Li, Hongfeng Ji, Lin Fu
91 - 96
10.3233/ATDE250028
Research Article
Advances in Transdisciplinary Engineering
Volume 68: Mechanical and Aerospace Engineering
Abstract

The structural integrity analysis of propellant grain is very important for Solid Rocket Motor(SRM). In this paper, a new semi-dumbbell ring groove grain is proposed, and the structural integrity of this new structure is studied by the finite element method. The results showed that the maximum equivalent strain of the semi-dumbbell ring groove grain can be reduced by about 19.8% under temperature loading and by 19.4% under pressure loading compared with the traditional ring groove grain. This new grain structure can provide some reference for the design of high-loading ratio SRM.

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