Metalurgija, Vol. 65 No. 4, 2026.
Izvorni znanstveni članak
https://doi.org/https://doi.org/10.64486/m.65.4.7
Numerical Validation of Time-Efficient ECAP Simulations Based on Energy Criteria
Igor Ciganović
; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Department of Technology, Ivana Lučića 5, 10 000 Zagreb, Croatia
*
Zdenka Keran
; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Department of Technology, Ivana Lučića 5, 10 000 Zagreb, Croatia
Petar Piljek
; University of Zagreb, Faculty of Mechanical Engineering and Naval Architecture, Department of Technology, Ivana Lučića 5, 10 000 Zagreb, Croatia
Andrej Razumić
; Dr. Franjo Tuđman Defense and Security University, Department of Polytechnics, Ilica 256b, 10 000 Zagreb, Croatia
*
* Dopisni autor.
Sažetak
Equal Channel Angular Pressing (ECAP) is a widely used severe plastic defor-mation technique for producing ultrafine-grained metals. Numerical modelling plays an essential role in analyzing the process mechanics. The purpose of this study is to reduce the computational cost of explicit ECAP simulations by apply-ing mass scaling while ensuring that the accuracy of the results is not compro-mised. The methodology includes explicit finite-element modelling with con-trolled mass scaling and verification by monitoring internal, kinetic, and total en-ergies throughout deformation. The ratio of kinetic to internal energy is used as the primary indicator of acceptable quasi-static behavior. The results show that the applied mass-scaling level significantly reduces computational time without al-tering the predicted stress distribution, plastic strain fields, or forming forces, pro-vided that the kinetic energy remains within recommended limits. The application of mass scaling reduced simulation time by more than two orders of magnitude while preserving quasi-static conditions, as indicated by a consistently low kinet-ic-to-internal energy ratio. The study concludes that energy-based verification of-fers a reliable framework for applying mass scaling in ECAP simulations while preserving the physical validity of the results.
Ključne riječi
ECAP; mass scaling; severe plastic deformation; quasi-static behavior
Hrčak ID:
347934
URI
Datum izdavanja:
1.10.2026.
Posjeta: 24 *