Wednesday, November 16th, 2022. Time: 12 noon

Hybrid! - O.C. Zienkiewicz Conference Room, C1 Building, UPC Campus Nord, Barcelona

Session link: https://meet.google.com/qjo-sttx-dgo

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ABSTRACT

3D printing can be used for manufacturing of very complex parts which other methods like casting and machining cannot be used. SLM is one of the important methods for 3D printing of complex metal parts. In this method a metal powder is distributed uniformly over the tray and then a laser beam will selectively melts the areas which are belong to part to a solid metal and leave the rest as powder. This procedure in theory can print any volume but in practice a not carefully designed model would result in parts with defects. The simulation of the 3D printing aims to detect such defects and helps users to design correctly the process.

The real physic of SLM is a fully coupled thermo-mechanical phenomenon and a high-fidelity simulation of it is very resource demanding. However, a simplified solution based on a inherent strain which comes from calibration can be used to have an estimation of the deformations of the part.

In this talk first the physics of the problem is described. Then the inherent strain method will be explained, and its advantages and limitations will be noted. Finally, inherent strain solver of Inspire 3DPrint will be shown.

SPEAKER CV

Dr. Pooyan Dadvand got his civil engineering degree from Isfahan University of Technology (IUT) and Master of Science in seismic engineering from Tehran University (Iran). He finished his Ph.D. in Universitat Politècnica de Catalunya (UPC) in numerical methods in 2007. The outcome of his thesis with title "A framework for developing finite element codes for multi-disciplinary applications" was Kratos Multiphysics.

For many years he worked as a researcher in CIMNE with focus on muliti-disciplinary solutions, High Performance Computing (HPC), and industrial applications. In 2018 he joined the manufacturing group in Altair Engineering and now he is leading the Kratos based solutions developed there, while maintaining his relationship with UPC as associated professor.

See Seminar Programme 2022