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Original scientific paper

Lumped parameter model with inner state variables for modeling hot deformability of steels

F. Vode ; Institute of Metals and Technology, Ljubljana, Slovenia
J. Burja ; Institute of Metals and Technology, Ljubljana, Slovenia
F. Tehovnik ; Institute of Metals and Technology, Ljubljana, Slovenia
B. Arh ; Institute of Metals and Technology, Ljubljana, Slovenia

Fulltext: english, pdf (211 KB) pages 111-114 downloads: 121* cite
APA 6th Edition
Vode, F., Burja, J., Tehovnik, F. & Arh, B. (2017). Lumped parameter model with inner state variables for modeling hot deformability of steels. Metalurgija, 56 (1-2), 111-114. Retrieved from https://hrcak.srce.hr/168901
MLA 8th Edition
Vode, F., et al. "Lumped parameter model with inner state variables for modeling hot deformability of steels." Metalurgija, vol. 56, no. 1-2, 2017, pp. 111-114. https://hrcak.srce.hr/168901. Accessed 29 Jan. 2020.
Chicago 17th Edition
Vode, F., J. Burja, F. Tehovnik and B. Arh. "Lumped parameter model with inner state variables for modeling hot deformability of steels." Metalurgija 56, no. 1-2 (2017): 111-114. https://hrcak.srce.hr/168901
Harvard
Vode, F., et al. (2017). 'Lumped parameter model with inner state variables for modeling hot deformability of steels', Metalurgija, 56(1-2), pp. 111-114. Available at: https://hrcak.srce.hr/168901 (Accessed 29 January 2020)
Vancouver
Vode F, Burja J, Tehovnik F, Arh B. Lumped parameter model with inner state variables for modeling hot deformability of steels. Metalurgija [Internet]. 2017 [cited 2020 January 29];56(1-2):111-114. Available from: https://hrcak.srce.hr/168901
IEEE
F. Vode, J. Burja, F. Tehovnik and B. Arh, "Lumped parameter model with inner state variables for modeling hot deformability of steels", Metalurgija, vol.56, no. 1-2, pp. 111-114, 2017. [Online]. Available: https://hrcak.srce.hr/168901. [Accessed: 29 January 2020]

Abstracts
A novel method for description of stress-strain relationship for hot deformability of steels is presented. Laplacian transformation of stress-strain data obtained on cylindrical hot compression tests offer simple description of dynamical input/output relationship between strain (input) and stress (output). In this paper, strain/stress relationship is described using transfer function of the third order. Parameters of transfer function are determined by numerical optimization for temperatures 1 000, 1 100 and 1 200 °C and logarithmic strain rates 10, 5 and 1 s-1. Obtained relative model error is around 1 % for logarithmic deformations in the range 0,1 <  < 0,8.

Keywords
Alloyed steel; Hot deformability; stress-strain curves; mathematical model; Laplacian transformation

Hrčak ID: 168901

URI
https://hrcak.srce.hr/168901

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