Riedlbauer, D., Drexler, M., Drummer, D., Steinmann, P. and Mergheim, J. (2014) Modelling, simulation and experimental validation of heat transfer in selective laser melting of the polymeric material PA12. Computational Materials Science, 93, pp. 239-248. (doi: 10.1016/j.commatsci.2014.06.046)
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Abstract
One of the most promising additive manufacturing techniques is selective laser melting of semi-crystalline thermoplastic powders. In this process the powder is fused in defined, locally-restricted points in the current powder layer by the energy input of a laser beam and, thereby, bonded to the already fused material of previous layers. In this way geometrically complex parts are constructed layer-by-layer. The accuracy of the process and the properties of the resulting parts depend on numerous process parameters and their interactions. To improve the process strategy and to reduce, e.g. eigenstresses and warpage a thorough understanding of the influence of various process parameters is required. In the present contribution one step in this direction is done by analysing the laser energy input into a powder bulk for different process parameters by comparing temperature distributions and the size of melting pools. Experiments with single-line specimens are conducted, analysed and compared to numerical results from finite element simulations of the highly nonlinear thermal problem.
| Item Type: | Articles |
|---|---|
| Additional Information: | The authors want to thank the German Research Foundation (DFG) for funding the Collaborative Research Centre 814, sub-projects C3 and B3. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Steinmann, Professor Paul |
| Authors: | Riedlbauer, D., Drexler, M., Drummer, D., Steinmann, P., and Mergheim, J. |
| College/School: | College of Science and Engineering > School of Engineering > Infrastructure and Environment |
| Journal Name: | Computational Materials Science |
| Publisher: | Elsevier |
| ISSN: | 0927-0256 |
| ISSN (Online): | 1879-0801 |
| Published Online: | 26 July 2014 |
| Related URLs: |
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