Rheological modeling and simulation of semi-solid slurry based on experimental study

Article Materials Science, Multidisciplinary

Insights into the rheological modeling of semi-solid metals: Theoretical and simulation study

Zhen Ma et al.

Summary: This research investigates the rheological behavior and numerical simulation of semi-solid metals. The study finds that the existing power law model for semi-solid metals neglects the yield stress, leading to unreasonable flow exponent. On the contrary, the Herschel-Bulkley (HB) theory model considering the yield stress shows better fitting results. The simulation results also indicate that the power law model over-predicts the occurrence of defects during semi-solid processing.

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY (2022)

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Article Materials Science, Coatings & Films

Numerical approach for the calendering process using Carreau-Yasuda fluid model

Muhammad Asif Javed et al.

Summary: This paper presents a numerical study of the calendering mechanism using the Carreau-Yasuda fluid model, where flow equations are made dimensionless and simplified using the lubrication approximation theory. A numerical method is constructed to find the stream function and pressure gradient, with pressure distribution increasing and domain length decreasing with the Weissenberg number. The power law index influences the pressure curve, with differences seen in the pressure profile for shear thinning and shear thickening fluids.

JOURNAL OF PLASTIC FILM & SHEETING (2021)

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Article Materials Science, Multidisciplinary