Open AccessEXPERIMENTAL INVESTIGATION AND SIMULATION OF 3D-PRINTED LATTICE STRUCTURES
Author(s) -
Eva Heiml,
Anna Kalteis,
Zoltán Major
Publication year - 2019
Publication title -
acta polytechnica ctu proceedings
Language(s) - English
Resource type - Journals
ISSN - 2336-5382
DOI - 10.14311/app.2019.25.0052
Subject(s) - materials science , selective laser sintering , thermoplastic polyurethane , lattice (music) , finite element method , composite material , material properties , deformation (meteorology) , hyperelastic material , mechanical engineering , structural engineering , sintering , engineering , acoustics , physics , elastomer
Lattice structures are currently of high interest, especially for lightweight design. They generally have better structural performance per weight than parts made of bulk material. With conventional manufacturing techniques they are dicult to produce, but with additive manufacturing (AM) fabricationisfeasible. To better understand their behaviour under various loading conditions two lattice structures in dierent congurations were observed. For each structure three dierent test specimens were designed and manufactured using selective laser sintering (SLS). To investigate the mechanical performance under large deformations the specimens were made of a thermoplastic polyurethane(TPU), which shows a hyperelastic material behaviour. Beside the experimental observations also nite element analyses (FEA) were conducted to investigate the deformation behaviour in more detail.