Estimating the Cowper–Symonds parameters for high-strength steel using DIC combined with integral measures of deviation

Škrlec, Andrej (avtor), Panić, Branislav (avtor), Nagode, Marko (avtor), Klemenc, Jernej (avtor)

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.

• Jezik: Angleški jezik
• Ključne besede: Cowper–Symonds model, digital image correlation (DIC), integral measure of deviation, multi-criterion optimisation, high-strength steel
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FS - Fakulteta za strojništvo
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2024
• Št. strani: 20 str.
• Številčenje: Vol. 14, iss. 9, art. 992
• PID: 20.500.12556/RUL-160655
• UDK: 620.17:669.14
• ISSN pri članku: 2075-4701
• DOI: 10.3390/met14090992
• COBISS.SI-ID: 206038019
• Datum objave v RUL: 02.09.2024

Gradivo je del revije

• Naslov: Metals
• Skrajšan naslov: Metals
• Založnik: MDPI AG
• ISSN: 2075-4701
• COBISS.SI-ID: 15976214

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: Cowper–Symonds materialni model, digitalna korelacija slik, integralna mera odstopanja, multi-kriterijska optimizacija, visoko-trdnostno jeklo

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P2-0182
• Naslov: Razvojna vrednotenja