Which *Mat can be used for gun powder?

[Mass Aghbulagh]

Dear all,

Do you know which *Mat can be used for gun powder?

Do you have any input file for it? or relater similar paper?

Is it doable by Ls-Dyna?

Kind regards

Mass

Nazarbayev University

[l...@schwer.net]

The most appropriate equation of state for modeling gun powder is

*EOS_PROPELLANT_DEFLAGRATION

 

When I searched www.dynalook.com for the words “gun powder” there were 10 references listed. I did not examine the content of those manuscripts.

 

                --len

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[Mass Aghbulagh]

Thank you for you information.

I checked all 10 studies. None of them modeled any propellants. 

The Name of *EOS_PROPELLANT_DEFLAGRATION seems proper but I need more information to simulate propulsion energy which is accelerating a mass of body rapidly. 

[l...@schwer.net]

Perhaps search the literature more generally.

Obviously, someone use that EOS at some point.               --len

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[James M. Kennedy]

Dear Mass,

 

Perhaps this presentation might offer a start.

 

In this manuscript the ignition and growth of the reaction in high explosives

equation-of-state was introduced along with model parameters for COMP-B.

Some comments were included concerning alternative versions of these model

parameters that are available in the literature. The manuscript focused on the

experimental data of Almond and Murray [2006], their simulations results, the

simulation results of Urtiew et al. [2006] and the present results which make

use of the relatively new LS-DYNA Multi-Material Arbitrary Eulerian Lagrange

(MMALE) capability which thus serve as a post-test form of model validation:

 

Schwer, L.E., "Impact and Detonation of COMP-B - An Example Using the

LS-DYNA EOS: Ignition and Growth of Reaction in High Explosives", 12th

International LS-DYNA Users Conference, Dearborn, Michigan, June, 2012.

 

http://www.dynalook.com/international-conf-2012/blast-impact13-d.pdf

 

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A discussion that is roughly 6 or more years old:

 

https://www.researchgate.net/post/What-is-the-usage-of-the-JWL-model-for-deflagration-of-black-powder

 

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Sourabh Koli, P. Chellapandic, Lokavarapu Bhaskara Rao, Akshay Sawant

“Study on JWL equation of state for the numerical simulation of near-field

and far-field effects in underwater explosion scenario”

 

https://pdf.sciencedirectassets.com/305941/1-s2.0-S2215098620X0005X/1-s2.0-S2215098618310255/main.pdf

(attached)

 

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Ermolaev, B., Belyaev, A.A., Viktorov, S.B., Sleptsov, K.A., and Zharikova, S.Y.,

“Nonideal Regimes of Deflagration and Detonation of Black Powder”, Russian

Journal of Physical Chemistry B, Vol. 4, No. 3, pp. 418-439, May, 2010.

 

https://www.researchgate.net/publication/227079292_Nonideal_regimes_of_deflagration_and_detonation_of_black_powder

(attached)

 

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Sincerely,

James M. Kennedy

KBS2 Inc.

June 6, 2021

 

 

From: ls-d...@googlegroups.com [mailto:ls-d...@googlegroups.com] On Behalf Of Mass Aghbulagh

Sent: Sunday, June 06, 2021 3:20 AM
To: LS-DYNA2 <ls-d...@googlegroups.com>

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