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Geometry-based Assurance of Directional Solidification for Complex Topology-optimized Castings using the Medial Axis Transform

Title data

Erber, Maximilian ; Rosnitschek, Tobias ; Hartmann, Christoph ; Alber-Laukant, Bettina ; Tremmel, Stephan ; Volk, Wolfram:
Geometry-based Assurance of Directional Solidification for Complex Topology-optimized Castings using the Medial Axis Transform.
In: Computer-Aided Design. (2022) . - No. 103394.
ISSN 0010-4485
DOI: https://doi.org/10.1016/j.cad.2022.103394

Abstract in another language

Using structural optimization is ideal for the development of complex aluminium cast parts, due to the high degree of design freedom. Various casting processes exist for production, and these differ in their boundary conditions and process restrictions. The resulting geometric restrictions have so far only been taken into account to a limited extent in structural optimization. Hence, there is a desire to determine simple process restrictions that can be taken into account to generate component geometries that are as light as possible but can still be produced by casting. This paper addresses the automated validation and optimization of directional solidification for topology-optimized geometries for castings. For the parametric description of the component volume, the medial axis transform (MAT) method is chosen. This approach allows a subsequent evaluation and optimization by methods of graph theory and feedback into an adapted surface file. The optimization results are finally evaluated by a process simulation using the finite volume method.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Medial axisTopology optimization; Solidification; Geometrical approach; Casting design
Institutions of the University: Faculties > Faculty of Engineering Science > Former Professors > Chair Engineering Design and CAD - Univ.-Prof. Dr.-Ing. Frank Rieg
Faculties > Faculty of Engineering Science > Chair Engineering Design and CAD > Chair Engineering Design and CAD - Univ.-Prof. Dr.-Ing Stephan Tremmel
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 10 Aug 2022 05:41
Last Modified: 10 Aug 2022 05:41
URI: https://eref.uni-bayreuth.de/id/eprint/71439