Digital Twin for Continuous Casters – The Playground for Metallurgists and Process Engineers

Leitnerl, Reinhold; Fuchshuber, Daniel; Brugger, Christian; Pennerstorfer, Paul; Medeiros, Gabriel Andrade

doi:10.5151/2594-5335-33945

Cited by 1 publication

(1 citation statement)

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“…The finite element method allows the calculation of the driving forces for the micro phenomena based on the process conditions, see, e.g., Li and Thomas [1] and Liu et al [2]. The combination of physical models with data-driven approaches is a further step towards overcoming these limitations, see Leitner et al [3].…”

Section: Introductionmentioning

confidence: 99%

Elasto-Viscoplastic Material Model of a Directly-Cast Low-Carbon Steel at High Temperatures

Krobath

Bernhard

et al. 2020

Materials

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A model-based process control of material production processes demands realistic material models describing the local evolution of the thermal and mechanical state variables, i.e., temperature, stress, strain, or plastic strain, for the relevant microstructure state. In the present work, a material model for the specific microstructure in a continuously cast strand shell, viable for reproducing cyclic viscoplastic effects, was developed for a 0.17 wt.% C steel. Experimental data was generated using directly-cast samples and a well-controllable testing facility to apply representative loading conditions. Displacement- and force-controlled experiments in the temperature range of 700–1100 °C were conducted, with a special focus on the relevant strain rates documented for the straightening operation. A temperature-dependent constitutive material model combining elastic, plastic, and viscoplastic effects was parameterized to fit the whole set of experimentally-determined material response curves. In order to account for the cyclic plastic material response, a combination of isotropic and kinematic hardening was considered. The material model sets a new standard for the material description of a continuously cast strand shell, and it can be applied in elaborate continuous casting simulations.

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Section: Introductionmentioning

confidence: 99%