Material Model Parameters Identification of Blast Environment

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F18%3A00536284" target="_blank" >RIV/60162694:G43__/18:00536284 - isvavai.cz</a>

Result on the web

<a href="http://confsec.eu/sbornik/cs-3-2018.pdf" target="_blank" >http://confsec.eu/sbornik/cs-3-2018.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Material Model Parameters Identification of Blast Environment

Original language description

In terms of designing or building new protective and security structures or equipment as a physical component of force protection, experimental verification of analytical or numerical calculations and vice versa becomes necessary. While the experiment can be performed on individual components, complex assessment of more complex variants or performing a parametric study is becoming more and more relevant in modelling and simulation domain. For this reason, there is a clear necessity to find the right connection between numerical simulation and experiment. Fast, nonlinear processes require nonlinear material models to capture the rate of deformation and material behaviour under extreme loads such as the effect of explosions or the impact of a projectile, i.e. the effects, which the theories and practices of protection of the population and troops are trying to minimize. The important part of the accuracy of computational models is the correct identification of the parameters of material models used in the simulations. This paper deals with the simulation of explosion and its effects and identification and optimization of material parameters of the environment in which the explosion and the shockwave propagates, with a focus on the soil material model. The inverse identification method is based on a combination of the experimental measurement data and the computational methods implemented in the finite element solvers and optimization programs. The simulation proceed from experimental measurement curves of blast effects. For measured parameter in the air overpressure at specific measuring points was chosen, while ground-propagating shock wave was evaluated by measuring acceleration values. The numerical simulation took place in the LS-Dyna software environment interconnected with the Optislang optimization program.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

50901 - Other social sciences

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

SECURITY & FUTURE

ISSN

2535-0668

e-ISSN

2535-082X

Volume of the periodical

2

Issue of the periodical within the volume

3

Country of publishing house

BG - BULGARIA

Number of pages

4

Pages from-to

142-145

UT code for WoS article

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EID of the result in the Scopus database

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