Isogeometric analysis and form finding

Visa enkel post
dc.contributor.authorHilmersson, Joel
dc.contributor.departmentChalmers tekniska högskola / Institutionen för industri- och materialvetenskapsv
dc.contributor.examinerLarsson, Fredrik
dc.contributor.supervisorAnder, Mats
dc.contributor.supervisorOlsson, Jens
dc.date.accessioned2020-09-03T09:09:38Z
dc.date.available2020-09-03T09:09:38Z
dc.date.issued2020sv
dc.date.submitted2020
dc.description.abstractRecent developments within the design of shells have seen an increased interest in utilizing active bending as form giving procedure [1]. This enables complex structures to be built from simple off-the-shelf materials. However, forming bending-active structures is highly dependent on the material properties, which makes the design process reliant on either physical testing or digital simulations. An associated problem with the simulation of this behavior is the lack of integration between modeling and analysis in conventional simulation techniques, a crucial concern since the final design is always an equilibrium shape with requirements on both structural and spatial integrity. IsoGeometric Analysis (IGA) is a method that aims to bridge precisely that gap between analysis and design, making it a suitable method for bending active structural design. This thesis explores an approach to the modeling and digital design of actively bent shells using the implementation of nonlinear IGA. Further on, two different ways of controlling the geometry, either by following the process forward and predicting the outcome or tracing it backwards during the construction procedure are proposed. Following the process forwards returns an implicitly controlled shell geometry through stepwise displacement of the boundaries of a flat sheet. However, as a design approach, one appealing strategy is to explicitly control the final geometry by a backwards tracing. This allows the designer to start from a desired outcome and instead tailor the stiffness to approximate this desired form. The procedure is tested in a case study where a combination of both forward prediction and backwards tracing is included. Both processes apply the Kirchhoff-Love shell theory [27] and uses the total Lagrangian formulation for the nonlinear computationssv
dc.identifier.coursecodeIMSX30sv
dc.identifier.urihttps://hdl.handle.net/20.500.12380/301616
dc.language.isoengsv
dc.setspec.uppsokTechnology
dc.subjectIsogeometric analysissv
dc.subjectShell Designsv
dc.subjectBending Activesv
dc.subjectNonlinearsv
dc.subjectForm Findingsv
dc.titleIsogeometric analysis and form findingsv
dc.type.degreeExamensarbete för masterexamensv
dc.type.uppsokH
local.programmeStructural engineering and building technology (MPSEB), MSc
Ladda ner
Original bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
IsogeometricAnalysisAndFormFinding_Joel_Hilmersson_Final.pdf
Storlek:
49.71 MB
Format:
Adobe Portable Document Format
Beskrivning:
Ladda ner
License bundle
Visar 1 - 1 av 1
Bild (thumbnail)
Namn:
license.txt
Storlek:
1.14 KB
Format:
Item-specific license agreed upon to submission
Beskrivning:
Ladda ner
Samling
Examensarbeten för masterexamen