Simulating the Electron Optics of an Electron Beam Manufacturing 3D Printer

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dc.contributor.authorGardfjell, Martin
dc.contributor.departmentChalmers tekniska högskola / Institutionen för fysiksv
dc.contributor.examinerVinai, Paolo
dc.contributor.supervisorSvensson, David
dc.date.accessioned2020-09-03T13:51:29Z
dc.date.available2020-09-03T13:51:29Z
dc.date.issued2020sv
dc.date.submitted2020
dc.description.abstractAdditive Manufacturing (AM) is a growing industry that has the potential to completely revolutionize global manufacturing. Electron Beam Manufacturing (EBM) is a 3D-printing method developed by GE Additive that utilizes an electron beam, controlled by a magnetic lens system, to melt metal powder. GE is currently looking into opportunities for simulating the Electron Optics, with the ambition to further develop their EBM technology. In this project a model of the lens system has been built and evaluated in COMSOL Multiphysics®. Using the Finite Element Method (FEM) and Time Step Particle Tracing it was possible to simulate the electron trajectories in 25 min. The computational time was substantially reduced by approximating certain calculations and replacing COMSOL’s default Generalized Alpha Time Stepping algorithm with a simpler algorithm in certain regions. The accompanied decrease in accuracy was negligible compared to the error in the model itself, proving that there is a lot of potential for improvement. The thesis concludes that COMSOL is a useful FEM software for simulating the electron optics of an Arcam EBM lens system. The model created in this thesis does however require further development, especially regarding mesh convergence, before the software can be implemented as a simulation tool at GE Additive.sv
dc.identifier.coursecodeTIFX05sv
dc.identifier.urihttps://hdl.handle.net/20.500.12380/301623
dc.language.isoengsv
dc.setspec.uppsokPhysicsChemistryMaths
dc.subjectComputational Electromagneticssv
dc.subjectElectron Opticssv
dc.subjectCharged Particle Opticssv
dc.subjectAdditive Manufacturingsv
dc.subjectArcam Electron Beam Manufacturingsv
dc.subjectGE Additivesv
dc.subjectCOMSOL Multiphysics®sv
dc.subjectFinite Element Methodsv
dc.subjectBoundary Element Methodsv
dc.subjectGeneralized Alphasv
dc.titleSimulating the Electron Optics of an Electron Beam Manufacturing 3D Printersv
dc.type.degreeExamensarbete för masterexamensv
dc.type.uppsokH
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