Untersuchung des Potenzials der Topologieoptimierung in der additiven Fertigung am Beispiel von biegebeanspruchten Bauteilen

authored by: D. R. Jantos, A. Röttger, P. Junker
Abstract: In this application-oriented work, we examine the performance of topology-optimized structures as compared to the reference I-beam. We make use of the thermodynamic topology optimization based on a linear elastic compliance minimization, i. e. minimization of the elastic strain energy of the whole structure. We investigate, how the optimization of the rather theoretical strain energy influences the efficiency of more practical measurements, i. e. the force-displacement response at the loading points and the maximum tolerable force. For this purpose, starting from a cuboid design space with the boundary conditions of a 3-point and 4-point bending stress, the geometry with constant volume was optimized. The topology-optimized bending beams were subsequently produced by stereolithography and mechanically tested with respect to the previously defined boundary conditions. In order to avoid a falsification of results due to internal sample defects, all samples were previously examined with the aid of computer tomography with regard to the defects in the volume. As a general result, the topology-optimized bending beams can bear a higher load in the experiment, which shows the usefulness of the coupling of additive manufacturing and topology optimization methods without any special constraints or enhancements regarding the manufacturing process within the optimization.
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): The University of Wuppertal
Type: Article
Journal: Materialwissenschaft und Werkstofftechnik
Volume: 53
Pages: 1298-1310
No. of pages: 13
ISSN: 0933-5137
Publication date: 05.10.2022
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Materials Science(all), Condensed Matter Physics, Mechanics of Materials, Mechanical Engineering
Electronic version(s): https://doi.org/10.1002/mawe.202200013 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{43aeeeff5a6b45c695e089e7f30949a6,
title = "Untersuchung des Potenzials der Topologieoptimierung in der additiven Fertigung am Beispiel von biegebeanspruchten Bauteilen",
abstract = "In this application-oriented work, we examine the performance of topology-optimized structures as compared to the reference I-beam. We make use of the thermodynamic topology optimization based on a linear elastic compliance minimization, i. e. minimization of the elastic strain energy of the whole structure. We investigate, how the optimization of the rather theoretical strain energy influences the efficiency of more practical measurements, i. e. the force-displacement response at the loading points and the maximum tolerable force. For this purpose, starting from a cuboid design space with the boundary conditions of a 3-point and 4-point bending stress, the geometry with constant volume was optimized. The topology-optimized bending beams were subsequently produced by stereolithography and mechanically tested with respect to the previously defined boundary conditions. In order to avoid a falsification of results due to internal sample defects, all samples were previously examined with the aid of computer tomography with regard to the defects in the volume. As a general result, the topology-optimized bending beams can bear a higher load in the experiment, which shows the usefulness of the coupling of additive manufacturing and topology optimization methods without any special constraints or enhancements regarding the manufacturing process within the optimization.",
keywords = "additive manufacturing, stereolithography, Topology optimization",
author = "Jantos, {D. R.} and A. R{\"o}ttger and P. Junker",
note = "Funding Information: We thank Ms. Claudia Br{\"u}gge and Mr. Christian Schollmeier for carrying out the mechanical tests. Open access funding enabled and organized by Projekt DEAL. ",
year = "2022",
month = oct,
day = "5",
doi = "10.1002/mawe.202200013",
language = "Deutsch",
volume = "53",
pages = "1298--1310",
journal = "Materialwissenschaft und Werkstofftechnik",
issn = "0933-5137",
publisher = "Wiley-VCH Verlag",
number = "10",
}