An Optimization Framework for Calibration of Material Models

Walls, Kenneth C.; Littlefield, David L.; Dorgan, Robert J.; Lambert, David

doi:10.1016/j.proeng.2013.05.032

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Cited by 5 publications

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“…The program LS-OPT is used for performing parameter optimization of both product equation of state parameters as well as for some of the burn model parameters. A similar approach has been presented by Walls et al [2] applied to the CTH Shock Physics code. Our scheme for obtaining the reactive burn parameters can be summarized as follows.…”

Section: Introductionmentioning

confidence: 95%

Optimization of equation of state and burn model parameters for explosives

Bergh

Wedberg

Lundgren

2018

AIP Conference Proceedings

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Section: Introductionmentioning

confidence: 95%

Optimization of equation of state and burn model parameters for explosives

Bergh

Wedberg

Lundgren

2018

AIP Conference Proceedings

View full text Add to dashboard Cite

Comparison of reactive burn equilibrium closure assumptions in CTH

Ruggirello,

Tuttle,

Kittell

2023

AIP Conference Proceedings

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Development and optimization of a spline-based Hugoniot for unreacted equations of state

Ginoza

Okafor

2021

Journal of Applied Physics

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Parametric forms, such as linear and quadratic fits, are common for fitting a Hugoniot curve to shock data. However, these forms only admit certain shape features and may exclude a better fit. Thus, a semiparametric Hugoniot curve was developed with cubic b-splines to allow more flexibility in fitting the shock data. A genetic algorithm that respects convexity constraints performed the optimization to fit the model to experimental data. In two cases with artificial data, the spline Hugoniot model resulted in close agreement with the known truth. Finally, a spline Hugoniot was fit to existing shock, pop plot, and overdriven data for a triaminotrinitrobenzene (TATB)-based explosive LX-17 [92.5% TATB and 7.5% Kel-F (polychlorotrifluoroethylene) binder by weight] and obtained a close fit.

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An Optimization Framework for Calibration of Material Models

Cited by 5 publications

References 4 publications

Optimization of equation of state and burn model parameters for explosives

Optimization of equation of state and burn model parameters for explosives

Comparison of reactive burn equilibrium closure assumptions in CTH

Development and optimization of a spline-based Hugoniot for unreacted equations of state

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