A master thesis from Aalborg University
Structural Optimization with Topology Optimization of Complex Civil Engineering Structures
[Struktural optimering med topologi optimering af komplekse civil inginiørkonstruktioner]
Author(s)
Term
4. term
Education
Publication year
2012
Submitted on
2012-06-08
Pages
105 pages
Abstract
Dette Master projekt omhandler topologi optimering med to kommercielle programmer (Absqus CAE and Altair Optistruct) hvor SIMP optimering er benyttet. Først vil den grundlæggende teori inden for området topologi optimering blive gennemgået og en gennemgang af den historiske baggrund vil blive præsenteret. Topologi optimering vil blive udført med tre cases med stigende kompleksitet. De to kommercielle programmer vil blive benyttet og der vil blive kommenteret på forskellige ydelses parameter som: endelig topologi, compliance og tid brugt. Dette vil lede til en overblik over programmernes funktionalitet. Topologi optimering vil blive udført på to civil ingeniør konstruktioner. Først et “transition piece” for en hav vindmølle. To størrelser af “transition pieces” udført i CRC beton vil blive optimeret med SIMP optimering. En rotations begrænsning vil blive benyttet for at sikre at laster kan blive optaget I flere retninger. Den anden konstruktion der bliver optimeret er en fodgænger bro over en motorvej. Broen vil blive undersøgt gennem fire topologi optimeringer. En egenfrekvens begrænsning er benyttet I en SIMP optimering.
This thesis will concern topology optimization with two different commercial programs (Absqus CAE and Altair Optistruct) where SIMP optimization is used. First will the fundamental theory in the field of topology optimization be outlined and a review of the historical background is presented. Topology optimization will be performed on three cases with increased complexity. The two commercial programs will be used and commented based on different performance parameters e.g. resulting topologies, compliance and time used. This will lead to an overview of the functionality of the programs. Topology optimization will be performed on two civil engineering structure. First a transition piece for an offshore wind turbine. Two sizes of transition pieces in CRC concrete are optimized using SIMP optimization. A rotation constrain is used to ensure loads can be obtain from multiple directions. Second a pedestrian footbridge over a freeway optimized. The bridge in investigate through four topology optimizations. An eigenfrequency constrain is applied in a SIMP optimization task.
Keywords
SIMP ; Topology ; Optimization ; BESO ; ESO
Documents
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