engleski

Experimental and numerical analysis of printed lattice structure

Additive manufacturing techniques enable produced components with extremely complex, not only external shapes, but also with the internal structures in their cores. One of these structures are lattice structures. Mechanical characteristics of such a 3D printed lattice structure depend firstly on the material from which it is made. Further, it also strongly depends on the topology of the structure itself. By varying of topology of a lattice structure, the physical response of such a structure can be significantly different and accordingly it can be easily adopted for a specific case. This research deals with the originally designed 3D printed lattice structure, which is analysed both experimentally and numerically by uniaxial compression test. The samples were made from ABSplus - P430 Ivory plastic by FDM technique without the use of supporting material. The produced lattice specimens were subjected to a full range (up to failure) compression tests on the Zwick 1456 testing machine equipped with TestExpert software to process the measured data. The force-displacement diagram has been recorded during the testing. It was simulated also by finite element method to determine the stresses, displacements and reaction force obtained on upper plate, as well. The mesh sensitivity study was performed to check the mesh convergence.

3D printing, ABS plastic, lattice structure, finite element analysis, force-displacement, compression test

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