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2 2019

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Application of 3D printing technology for mechanical properties study of the photopolymer resin used to print porous structures

Małek Ewelina, Miedzińska Danuta, Popławski Arkadiusz, Szymczyk Wiesław

Technical Sciences / University of Warmia and Mazury in Olsztyn

2019

nr 22(2)

183--194

In the field of numerical research there are various approaches and methods for structures of porous materials modeling. The solution is the use of fractal models to develop the porous structure. In the case of modeling the geometry of natural (random) materials, there is a problem of compatibility of the FE model geometry and real one. This is a source of differences between the results of calculations and experimental ones. Application of 3D printing technology will allow to receive a real structure in a controlled manner, which exactly reflects the designed structure and is consistent with the geometry of the numerical model. An experimental research on the standard samples made of photopolymer resin using 3D printing technique was presented in the paper. The aim of the research was to determine the base material properties and, consequently, to select the constitutive model, which is necessary to carry out numerical analyses.

Numerical modelling of resins used in stereolitography rapid prototyping

Miedzińska Danuta, Małek Ewelina, Popławski Arkadiusz

Applied Computer Science

2019

Vol. 15, no 4

16--26

The presented research deals with the development of the numerical model for resins used for stereolithography (SLA) rapid prototyping. SLA is an additive method of production of models, prototypes, elements or parts of constructions with the use of 3D printing that covers photochemical processes by which light causes chemical monomers to link together to form polymers. Such method is very useful in design visualization, but also can be applied in numerical modelling for the purpose of validation and verifi-cation. In this application the resin strength parameters must be described and on the base of them the numerical material model is developed and validated. Such a study for SLA resins was presented in the paper.