Experimental and numerical investigations of mechanical properties of 3D-printed polymeric samples with ideal and roughed surfaces
Abstract
The mechanical properties of the polymeric samples were discussed in many papers. Only several of them investigates the mechanical properties of the 3D-printed sampled prepared by different technologies, i.e. FDM, FFF, MJM, SLA, SLS etc. More dense samples could be obtained by any art of SLA technology, for example, based on the DLP principles, whereby less dense samples made of any thermoplastic materials obtained by FFF technology. In the current paper the authors carried out, firstly, experiments and numerical simulation of the tensile and compression tests of the 3D-printed samples made of ABS and PLA polymers. The initial CAD-model does not contained any topological information to the samples' surface. Secondly, the same simulation runs but for CAD-model obtained by 3D-scanning were performed with respect to the surface appearance. The density of the material was taken as a goal function. And, thirdly, at the end the experimental and numerical results were compared. The deviation of the deformation forces between the numerical and experimental results for as-modelled in CAD and as-scanned samples was arranged within the 5 - 10% and strongly depended on the inner type of infill, represented by porosity coefficient.
- Publication:
-
Proceedings of the 22nd International ESAFORM Conference on Material Forming: ESAFORM 2019
- Pub Date:
- July 2019
- DOI:
- 10.1063/1.5112697
- Bibcode:
- 2019AIPC.2113o0021P