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Estimating the Cowper–Symonds parameters for high-strength steel using DIC combined with integral measures of deviation
ID
Škrlec, Andrej
(
Author
),
ID
Panić, Branislav
(
Author
),
ID
Nagode, Marko
(
Author
),
ID
Klemenc, Jernej
(
Author
)
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MD5: 4D05D4036D51291144C4241C56E2436C
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https://www.mdpi.com/2075-4701/14/9/992
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Abstract
Cowper–Symonds parameters were estimated for the complex-phase high-strength steel with a commercial name of SZBS800. The parameter estimation was based on a series of conventional tensile tests and unconventional high-strain rate experiments. The parameters were estimated using a reverse engineering approach. LS-Dyna was used for numerical simulations, and the material’s response was modelled using a piece-wise linear plasticity model with a visco-plastic formulation of the Cowper–Symonds material model. A multi-criteria cost function was defined and applied to obtain a response function for the parameters p and C. The cost function was modelled with a response surface, and the optimal parameters were estimated using a real-valued genetic algorithm. The main novelty and innovation of this article is the definition of a cost function that measures a deviation between the deformed geometry of the flat plate-like specimens and the results of the numerical simulations. The results are compared to the relevant literature. A critical evaluation of our results and references is another novelty of this article.
Language:
English
Keywords:
Cowper–Symonds model
,
digital image correlation (DIC)
,
integral measure of deviation
,
multi-criterion optimisation
,
high-strength steel
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2024
Number of pages:
20 str.
Numbering:
Vol. 14, iss. 9, art. 992
PID:
20.500.12556/RUL-160655
UDC:
620.17:669.14
ISSN on article:
2075-4701
DOI:
10.3390/met14090992
COBISS.SI-ID:
206038019
Publication date in RUL:
02.09.2024
Views:
84
Downloads:
25
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Record is a part of a journal
Title:
Metals
Shortened title:
Metals
Publisher:
MDPI AG
ISSN:
2075-4701
COBISS.SI-ID:
15976214
Licences
License:
CC BY 4.0, Creative Commons Attribution 4.0 International
Link:
http://creativecommons.org/licenses/by/4.0/
Description:
This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Secondary language
Language:
Slovenian
Keywords:
Cowper–Symonds materialni model
,
digitalna korelacija slik
,
integralna mera odstopanja
,
multi-kriterijska optimizacija
,
visoko-trdnostno jeklo
Projects
Funder:
ARIS - Slovenian Research and Innovation Agency
Project number:
P2-0182
Name:
Razvojna vrednotenja
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