Simulation of the Particle Distribution and Resulting Laser Processing of Selective Laser Melting Processes

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Bode, Tobias: Simulation of the Particle Distribution and Resulting Laser Processing of Selective Laser Melting Processes. Hannover : Gottfried Wilhelm Leibniz Universität, 2017, Master-Thesis, 31 S.

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Sum total of downloads: 303

Selective Laser Melting (SLM) is a 3D printing technology which is suited for additively manufacturing of metals and polymers. The main barriers of this process are the lack of reproducibility and the control of the influence of the process parameters, like laser power, scan rate, layer height and particle distribution for instance. A high fidelity simulation scheme for SLM processes can not only give an insight into the physical behaviour during the process, but can also help to control the whole 3D printing process in order to guarantee the reproducibility of the desired final product properties. However many challenges have to be overcome in order to guarantee a high fidelity simulation, like modelling the heat source or the phase change for instance. In this work the modelling of the heat source is addressed. A Ray Tracing algorithm should be implemented into the existing thermomechanical Optimal Transportation Meshfree (OTM) code. A Ray Tracing algorithm for the simulation of laser processes is investigated in combination with the Discrete Element Method in the literature. Therefore in a first step this algorithm should be recoded in order to benchmark the implemented Ray Tracing algorithm. In the next step this algorithm has to be implemented into the OTM code. An investigation by means of some examples should demonstrate the influence of the Ray Tracing algorithm on the fusion of two metal particles.
License of this version: CC BY 3.0 DE
Document Type: MasterThesis
Publishing status: publishedVersion
Issue Date: 2017
Appears in Collections:Fakultät für Maschinenbau

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pos. country downloads
total perc.
1 image of flag of Germany Germany 194 64.03%
2 image of flag of United States United States 47 15.51%
3 image of flag of China China 14 4.62%
4 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 6 1.98%
5 image of flag of Israel Israel 4 1.32%
6 image of flag of Hong Kong Hong Kong 3 0.99%
7 image of flag of France France 3 0.99%
8 image of flag of Croatia Croatia 2 0.66%
9 image of flag of Egypt Egypt 2 0.66%
10 image of flag of Switzerland Switzerland 2 0.66%
    other countries 26 8.58%

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