6533b7cffe1ef96bd1259028
RESEARCH PRODUCT
A macroscale FEM-based approach for selective laser sintering of thermoplastics
Wei ZhuSong BoChunze YanGianluca BuffaLivan FratiniMario Gancisubject
0209 industrial biotechnologyMaterials scienceAdditive manufacturing02 engineering and technologyIndustrial and Manufacturing Engineeringlaw.inventionchemistry.chemical_compoundPhase change020901 industrial engineering & automationlawDistortionPhase (matter)Phase changeComposite materialPolypropyleneMechanical EngineeringComputer Science Applications1707 Computer Vision and Pattern Recognition021001 nanoscience & nanotechnologyLaserFinite element methodFinite element modellingComputer Science ApplicationsSelective laser sinteringSelective laser sinteringchemistryControl and Systems EngineeringPolypropylene0210 nano-technologySoftwareCooling downdescription
A numerical approach to model the selective laser sintering (SLS) of polypropylene is proposed. A 3D thermal model was developed and thus enables the prediction of the temperature fields and the extension of the sintered area in the powder bed taking into account the phase change during multiple laser passes. Powderâliquid, liquidâsolid and solidâliquid phase changes were modelled during the SLS and the subsequent cooling processes. Then, a 3D thermomechanically coupled model was set up based on the temperature results of the thermal model in order to predict the distortion of the produced parts after cooling down. Different pre-heating temperatures were considered, highlighting their influence on the final part properties.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-01-17 | The International Journal of Advanced Manufacturing Technology |