<div class="csl-bib-body">
<div class="csl-entry">Zwar, J. M., Chamoin, L., & Elgeti, S. (2023, June 20). <i>Gradient-based Optimization of Geometries Comprised of CAD-Compliant Microstructures</i> [Conference Presentation]. IGA 2023, Lyon, France.</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/190840
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dc.description.abstract
Through recent advances in modern production techniques, particularly in the field of additive
manufacturing, new previously unthinkable geometries have become feasible. This vast realm of new
possibilities cannot be adequately addressed by classical methods in engineering, which is why
numerical design techniques are becoming more and more valuable. In this context, this work aims to
present concepts that exploit the emerging possibilities and facilitate numerical optimization.
The numerical optimization is built on a microstructured grid, where the geometry is constructed by
means of functional composition between splines [1], resulting in a regular pattern of building blocks.
Here, a macro-spline defines the outer contour, a micro-geometry sets the individual tiles and a
parameter-spline controls the local parametrization of the microstructure, e.g., acting on the thickness
or material density in a specific region [2]. This approach opens up a broad design space, where the
adaptivity of the resulting microstructure can be easily extended by increasing the number of control
variables in the parameters-spline via h- or p-refinement. The geometric representation uses volume
splines, on the one hand providing full compatibility with CAD/CAM and on the other hand facilitating
the use of Isogeometric Analysis (IGA). To fully utilize the potential of this type of geometry
parameterization, gradient-based optimization algorithms are employed in combination with analytical
derivatives of the geometry and adjoint methods.
We will present first results in two fields of application, namely passive heat regulation and an elasticity
problem. Here, we demonstrate how optimized microstructures can compensate for irregular boundary
conditions and how compliance can be minimized using these lattice-like structures for major weight
reduction.
This research has been supported by European Union's Horizon 2020 research and innovation program
under agreement No. 862025.
en
dc.description.sponsorship
European Commission
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dc.language.iso
en
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dc.subject
microstructures
en
dc.subject
IsoGeometric analysis
en
dc.title
Gradient-based Optimization of Geometries Comprised of CAD-Compliant Microstructures
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.contributor.affiliation
ENS Paris-Saclay
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dc.relation.grantno
Grant Agreement-862025-ADAM^2
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dc.type.category
Conference Presentation
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tuw.project.title
Analysis, Design, And Manufacturing using Microstructures
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tuw.researchTopic.id
C4
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tuw.researchTopic.id
C6
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tuw.researchTopic.id
C3
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tuw.researchTopic.name
Mathematical and Algorithmic Foundations
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tuw.researchTopic.name
Modeling and Simulation
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tuw.researchTopic.name
Computational System Design
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tuw.researchTopic.value
30
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tuw.researchTopic.value
20
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tuw.researchTopic.value
50
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tuw.publication.orgunit
E317-01-1 - Forschungsgruppe Numerische Analyse- und Designmethoden
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tuw.author.orcid
0000-0002-8361-0757
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tuw.author.orcid
0000-0002-4474-1666
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tuw.event.name
IGA 2023
en
tuw.event.startdate
18-06-2023
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tuw.event.enddate
21-06-2023
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Lyon
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tuw.event.country
FR
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tuw.event.institution
ECCOMAS
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tuw.event.presenter
Zwar, Jacques Marvin
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tuw.event.track
Multi Track
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wb.sciencebranch
Maschinenbau
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wb.sciencebranch
Informatik
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wb.sciencebranch
Mathematik
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wb.sciencebranch.oefos
2030
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wb.sciencebranch.oefos
1020
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wb.sciencebranch.oefos
1010
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wb.sciencebranch.value
70
-
wb.sciencebranch.value
20
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wb.sciencebranch.value
10
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item.languageiso639-1
en
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item.openairetype
conference paper not in proceedings
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item.cerifentitytype
Publications
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item.grantfulltext
none
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item.fulltext
no Fulltext
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item.openairecristype
http://purl.org/coar/resource_type/c_18cp
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crisitem.author.dept
E317-01-1 - Forschungsgruppe Numerische Analyse- und Designmethoden
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crisitem.author.dept
ENS Paris-Saclay
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crisitem.author.dept
E317-01 - Forschungsbereich Leichtbau
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crisitem.author.orcid
0000-0002-8361-0757
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crisitem.author.orcid
0000-0002-4474-1666
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crisitem.author.parentorg
E317-01 - Forschungsbereich Leichtbau
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crisitem.author.parentorg
E317 - Institut für Leichtbau und Struktur-Biomechanik