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A study of the complex dynamics of dendrite solidification coupled to structural mechanics

A study of the complex dynamics of dendrite solidification coupled to structural mechanics

Soar, Peter ORCID: 0000-0003-1745-9443, Kao, Andrew ORCID: 0000-0002-6430-2134, Djambazov, Georgi ORCID: 0000-0001-8812-1269 and Pericleous, Kyriacos A ORCID: 0000-0002-7426-9999 (2023) A study of the complex dynamics of dendrite solidification coupled to structural mechanics. In: 16th International Conference on Modelling of Casting, Welding and Advanced Solidification Processes (MCWASP 2023). 18th - 23rd June 2023. Banff, Canada. IOP Conference Series: Materials Science and Engineering, 1281 (012045). IOP Publishing Ltd, Bristol, UK and Philadelphia, PA, pp. 1-10. ISSN 1757-8981 (Print), 1757-899X (Online) (doi:https://doi.org/10.1088/1757-899X/1281/1/012045)

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Abstract

The impact of structural mechanics is often overlooked when modelling the solidification of dendritic microstructures, despite experimental observations that the interaction between these processes can be a factor leading to the development of crystal mosaicity throughout the microstructure which can itself lead to more serious defects. When considered at all, the structural mechanical behaviour of columnar dendrites is often considered as being analogous to a cantilever beam both in interpretations of experimental results and in existing numerical modelling. While this is not an unreasonable assumption when considering a dendrite in isolation, this is a scenario that infrequently occurs. In this paper a parametric study is presented using a Cellular Automata solidification solver coupled to a Finite Volume Structural Mechanics solver. These results highlight the complex non-linear behaviour that arises when considering dendrite interaction, demonstrating the significantly different microstructures that can be obtained by varying only the force experienced by the system.

Item Type: Conference Proceedings
Title of Proceedings: 16th International Conference on Modelling of Casting, Welding and Advanced Solidification Processes (MCWASP 2023). 18th - 23rd June 2023. Banff, Canada.
Uncontrolled Keywords: microstructure evolution; dendrite deformation; alloys; finite volume; solid mechanics
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > TA Engineering (General). Civil engineering (General)
Faculty / School / Research Centre / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Centre for Numerical Modelling & Process Analysis (CNMPA)
Faculty of Engineering & Science > Centre for Numerical Modelling & Process Analysis (CNMPA) > Computational Science & Engineering Group (CSEG)
Faculty of Engineering & Science > School of Computing & Mathematical Sciences (CMS)
Last Modified: 04 Jul 2023 12:55
URI: http://gala.gre.ac.uk/id/eprint/42733

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