Journal of Projectiles, Rockets, Missiles and Guidance >
An Analysis of Structural Integrity for Solid Propellant Grain at Extreme Temperature Launching
Received date: 2013-12-23
Online published: 2025-05-30
A three-dimensional thermoviscoelasticity finite element method was used to analyze structural integrity of a rocket motor with large aspect ratio for its launching under extreme temperature. Displacement, stress, and strain fields of solid propellant grain were calculated under pressure loading, axial overload and temperature loading (-40°C & +50°C). The results demonstrate that the maximum displacements are 9.3 mm and 16.4 mm, the maximum Von Mises strain are 14.6% and 23.5%, the safety factor is 2.74 and 2. 46 at high temperature and low temperature respectively. According to the Von Mises strain criterion, the solid propellant grain is proved to meet the requirements of the structural integrity.
YANG Junhui , LEI Yongjun , MENG Shangyang . An Analysis of Structural Integrity for Solid Propellant Grain at Extreme Temperature Launching[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2014 , 34(6) : 95 -98 . DOI: 10.15892/j.cnki.djzdxb.2014.06.025
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