Research on the Numerical Method and Parametric Study of Constitutive Model of Modified Double Base Propellant

Wang, Hongli; Xu, Jie

doi:10.2991/icmmita-16.2016.171

Cited by 1 publication

(2 citation statements)

References 9 publications

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“…The numerical simulation and test results were in good agreement, which verified the reliability and feasibility of this numerical calculation method applied to the structural integrity study of grain. Meng H L [6] established the nonlinear viscoelastic constitutive equation with cumulative damage of the modified double-base propellant materials, compiled the constitutive model subprogram, and carried out numerical calculation of the structural integrity of the modified double-base propellant grain with ABAQUS software, and analyzed the influence of pressure load, star grain geometric parameters and cladding layer materials on the structural integrity of the grain. Deng K Q et al [7] used the three-dimensional finite element method to calculate the mechanical response of a free-loading solid rocket motor during the whole process from solidification cooling to low-temperature ignition, which can provide a reference for the simulation study of the structural integrity of the free-loading solid rocket motor grain.…”

Section: Introductionmentioning

confidence: 99%

“…Gao F L [8] carried out a numerical simulation study on the structural integrity of the grain against the background of explosion during the low-temperature ignition test of a solid rocket motor, guided the optimization of the design improvement of the grain structure, and solved the failure of the low-temperature ignition of the motor. Wang H L [9] applied the viscoelastic plastic constitutive equation with damage of modified doublebase propellant materials to the finite element simulation calculation, carried out simulation research on star grain under ignition pressure load and acceleration load, and obtained the weak parts of the stress and strain of the grain. Wang C F [10] used Python language to conduct the parametric modeling of the solid rocket motor, carried out the structural integrity simulation research of large aspect ratio grain, and proposed the optimization strategy for the structural integrity of grain with the framework structure and stress relief cover structure according to the simulation results.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical Simulation on Structural Integrity of Grain with Large Increased Area Ratio for Solid Rocket Motor

Wang¹,

Bai²,

Zuo³

et al. 2023

J. Phys.: Conf. Ser.

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To evaluate the structural integrity of a type of solid rocket motor grain with a largely increased area ratio using free-loading modified double-base grain, the Schapery integral nonlinear viscoelastic constitutive equation with damage is derived, and the numerical simulation model of solid rocket motor grain is constructed. According to the mission profile of the grain during the equipment period, the numerical simulation research on the mechanical response characteristics of the grain under three typical working conditions, namely, platform vibration, underwater explosion impact, and ignition pressurization during the launch is carried out. The simulation results show that under the three typical working conditions, the grain will not produce structural damage and defects, and the mechanical response of the grain under the platform vibration and explosion impact load is far less than that under the launch ignition pressurization. The ignition pressurization should be considered in the grain structural integrity design of this type or similar structure solid rocket motor.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%