Efficient modelling of ceramic sintering processes: Application to bilayers and membranes

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Samenvatting

The constitutive relation of Skorohod and Olevsky for viscous sintering is utilized to model the shrinkage and relative density evolution during the sintering process of ceramics. A new implicit integration scheme is presented and implemented. The computational cost is drastically reduced by combining this integration scheme with a solid-like shell element formulation, which also enables a faster and more accurate description of shape distortions, especially for thin geometries. The characterization and identification of the material viscosity is also improved via the Aquilanti–Mundim deformed Arrhenius description. The model robustness is examined with a spectrum of benchmark tests: ZnO sintering experiments from previous studies, as well as new lanthanum tungstate sintering tests. The model predictions for both dimensional shrinkage and relative density evolution are very accurate using the newly proposed material viscosity functions. The model improvements offer the possibility to simulate long-time sintering processes with higher accuracy and significantly reduced computational efforts.

Originele taal-2Engels
Pagina's (van-tot)4939-4949
Aantal pagina's11
TijdschriftJournal of the European Ceramic Society
Volume43
Nummer van het tijdschrift11
DOI's
StatusGepubliceerd - sep. 2023

Bibliografische nota

Funding Information:
The financial support through the “AMAZING” project (grant no. TKITOEAmazing ) from Dutch top consortia for Knowledge and Innovation programme Energy and Industry (TKI E&I) is gratefully acknowledged. The authors would like to thank Dr. Wendelin Deibert and Prof. Wilhelm Albert Meulenberg (Institute of Energy and Climate Research, Materials Synthesis and Processing, Forschungszentrum Jülich, Germany) for providing the materials for the experimental validation steps. The authors would also like to thank MSc. Michel Drazkowsky and Prof. Arian Nijmeijer (Inorganic Membranes, University of Twente, the Netherlands) for their support with pressing and sintering experiments. The Institute for Sustainable Process Technology (ISPT) is also acknowledged for the help in coordinating the project.

Funding Information:
The financial support through the “AMAZING” project (grant no. TKITOEAmazing) from Dutch top consortia for Knowledge and Innovation programme Energy and Industry (TKI E&I) is gratefully acknowledged. The authors would like to thank Dr. Wendelin Deibert and Prof. Wilhelm Albert Meulenberg (Institute of Energy and Climate Research, Materials Synthesis and Processing, Forschungszentrum Jülich, Germany) for providing the materials for the experimental validation steps. The authors would also like to thank MSc. Michel Drazkowsky and Prof. Arian Nijmeijer (Inorganic Membranes, University of Twente, the Netherlands) for their support with pressing and sintering experiments. The Institute for Sustainable Process Technology (ISPT) is also acknowledged for the help in coordinating the project.

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