Publication detail

SHAPE AND DIMENSIONAL ANALYSIS OF LATTICE STRUCTURES PRODUCED BY SELECTIVE LASER MELTING

VRÁNA, R. VAVERKA, O. KOUTNÝ, D. DOČEKALOVÁ, K. PALOUŠEK, D.

English title

SHAPE AND DIMENSIONAL ANALYSIS OF LATTICE STRUCTURES PRODUCED BY SELECTIVE LASER MELTING

Type

journal article in Web of Science

Language

en

Original abstract

Mechanical properties of lattice structures produced by Selective Laser Melting (SLM) are hardly predictable using a numerical simulation. It is caused by procedural inaccuracies of the SLM, such as shape and dimension deviations which are usually not included in a simulation. In order to quantify their influence, lattice structure specimens were produced by SLM and digitized in the whole volume using mu CT. The shape and dimensional analyses were performed in each strut of lattice structure using the developed script in GOM Inspect software. Based on statistical analysis, the global dimension parameters of lattice structures were obtained and used in FEA models. The shape analysis showed large deviations in diameters of inscribed and circumscribed cylinders which implied the elliptic shape of the lattice structure. It makes the lattice structure significantly stiffer mainly under compression loading which was confirmed by FEA comparison of circular and elliptical geometry of the lattice structure.

English abstract

Mechanical properties of lattice structures produced by Selective Laser Melting (SLM) are hardly predictable using a numerical simulation. It is caused by procedural inaccuracies of the SLM, such as shape and dimension deviations which are usually not included in a simulation. In order to quantify their influence, lattice structure specimens were produced by SLM and digitized in the whole volume using mu CT. The shape and dimensional analyses were performed in each strut of lattice structure using the developed script in GOM Inspect software. Based on statistical analysis, the global dimension parameters of lattice structures were obtained and used in FEA models. The shape analysis showed large deviations in diameters of inscribed and circumscribed cylinders which implied the elliptic shape of the lattice structure. It makes the lattice structure significantly stiffer mainly under compression loading which was confirmed by FEA comparison of circular and elliptical geometry of the lattice structure.

Keywords in English

Selective Laser Melting (SLM); lattice structures; shape analysis; dimension analysis; digitization; finite element analysis

Released

04.06.2020

Publisher

MM SCIENCE

Location

PRAGUE 10

ISSN

1803-1269

Volume

2020

Number

2

Pages from–to

3938–3942

Pages count

5

BIBTEX


@article{BUT164925,
  author="Radek {Vrána} and Ondřej {Vaverka} and Daniel {Koutný} and Kateřina {Dočekalová} and David {Paloušek},
  title="SHAPE AND DIMENSIONAL ANALYSIS OF LATTICE STRUCTURES PRODUCED BY SELECTIVE LASER MELTING",
  year="2020",
  volume="2020",
  number="2",
  month="June",
  pages="3938--3942",
  publisher="MM SCIENCE",
  address="PRAGUE 10",
  issn="1803-1269"
}