Three-dimensional finite-element acoustic analysis of solid rocket motor cavities

1976 ◽  
Vol 13 (10) ◽  
pp. 585-588 ◽  
Author(s):  
R. M. Hackett
Keyword(s):  
Finite Element ◽  
Acoustic Analysis ◽  
Three Dimensional ◽  
Rocket Motor ◽  
Solid Rocket Motor ◽  
Dimensional Finite Element ◽  
Solid Rocket ◽  
Three Dimensional Finite Element

scholarly journals Fluid-structure interaction considerations for solid rocket motor internal ballistics modeling

2021 ◽  
Author(s):  
Giovanni Montesano
Keyword(s):  
Burning Rate ◽  
Combustion Instability ◽  
Three Dimensional ◽  
Rocket Motor ◽  
Solid Rocket Motor ◽  
Fluid Structure ◽  
Dimensional Finite Element ◽  
Solid Rocket ◽  
Model Components ◽  
Three Dimensional Finite Element

A study of the numerical modeling and prediction of nonlinear unsteady combustion instability within the combustion chamber of a solid rocket motor (SRM) is the main objective. The numerical model consists of a three-dimensional finite-element representation of a cylindrical-grain motor, coupled to a quasi-one-dimensional internal ballistic flow (IBF) model, where a quasi-steady rapid kinetic rate burning rate algorithm is used to model the propellant combustion and regression. Fluid-structure-combustion interaction subroutines are also employed to control the simulated motor firings and the data transferred between the fluid, structure and burning rate model components. Results illustrating the significant effects of structural vibrations on the burning rate and consequently the IBF are shown and compared to experimental data. Modeling considerations are illustrated, giving insight into the physical phenomena of SRM combustion instability.

scholarly journals Fluid-structure interaction considerations for solid rocket motor internal ballistics modeling

2021 ◽  
Author(s):  
Giovanni Montesano
Keyword(s):  
Burning Rate ◽  
Combustion Instability ◽  
Three Dimensional ◽  
Rocket Motor ◽  
Solid Rocket Motor ◽  
Fluid Structure ◽  
Dimensional Finite Element ◽  
Solid Rocket ◽  
Model Components ◽  
Three Dimensional Finite Element

A study of the numerical modeling and prediction of nonlinear unsteady combustion instability within the combustion chamber of a solid rocket motor (SRM) is the main objective. The numerical model consists of a three-dimensional finite-element representation of a cylindrical-grain motor, coupled to a quasi-one-dimensional internal ballistic flow (IBF) model, where a quasi-steady rapid kinetic rate burning rate algorithm is used to model the propellant combustion and regression. Fluid-structure-combustion interaction subroutines are also employed to control the simulated motor firings and the data transferred between the fluid, structure and burning rate model components. Results illustrating the significant effects of structural vibrations on the burning rate and consequently the IBF are shown and compared to experimental data. Modeling considerations are illustrated, giving insight into the physical phenomena of SRM combustion instability.

scholarly journals Structural integrity analysis and experimental investigation for solid rocket motor grain subjected to low temperature ignition

2019 ◽  
Vol 293 ◽  
pp. 04005
Author(s):  
Zhi-Bin Shen ◽  
Liang Zhang ◽  
Yi-Fei Li
Keyword(s):  
Finite Element ◽  
Low Temperature ◽  
Structural Integrity ◽  
Three Dimensional ◽  
Element Model ◽  
Rocket Motor ◽  
Experimental Result ◽  
Solid Rocket Motor ◽  
Temperature And Pressure ◽  
Solid Rocket

The structural integrity of solid rocket motor(SRM) grain is severely tested owing to the combined action of low temperature and pressure load under the load case of low temperature ignition. The three dimensional finite element model of SRM was created to analyze the structural integrity of the SRM grain subjected to low temperature and ignition pressure based on three dimensional viscoelastic finite element method via MSC.Patran/Marc. Meanwhile, cold pressurization test was applied on certain SRM. The experimental result and numerical result were compared based on uncoupling principal of temperature and pressure. The result show that the safety factor of solid rocket motor grain is 2.46 which can meet the requirement of structural integrity. The experimental results are in good agreement with the simulation results. Relevant research methods and conclusions can provide reference for the design, analysis and test of SRMs.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

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