Homogenization-based computational design and two-scale performance optimization of electroactive structures

buir.advisorTemizer, İlker
dc.contributor.authorDedeoğlu, Berkan
dc.date.accessioned2024-09-24T12:54:07Z
dc.date.available2024-09-24T12:54:07Z
dc.date.copyright2024-09
dc.date.issued2024-09
dc.date.submitted2024-09-19
dc.descriptionCataloged from PDF version of article.en_US
dc.descriptionIncludes bibliographical references (leaves 61-68).en_US
dc.description.abstractMacroscopic materials and structures with enhanced characteristics have been extensively studied in the context of solid mechanics. The advantages of mi- crostructured materials with active constituents have been reported in the lit- erature. In view of tunable microstructures, further intriguing traits of such materials can be achieved through imposing external stimuli. The ultimate goal of the present study is to establish a homogenization-based computational design framework to actively control the time-varying macroscopic stress response and behavior of structures with piezoelectric constituents. This is accomplished by temporally adapting the macroscopic electric field enforced on a microstructure and controlling the time-variation of the macroscopic electric potential imposed on a macroscopic solid. This periodic microstructure is optimized in a non- restrictive design space that embodies not only the topology, but also anisotropic material orientation and the unit cell geometry. In order to enrich the optimiza- tion space to capture the intriguing time-varying mechanical aspects, additional optimization variables, namely performance variables, are developed. Extensive numerical investigations are conducted to test the limits of this framework based on the discreteness of the microstructure and the accurateness of attaining the targeted mechanical behavior. The overall computational work is implemented through a parallel C++-based in-house FE program.
dc.description.statementofresponsibilityby Berkan Dedeoğlu
dc.embargo.release2025-03-19
dc.format.extentx, 68 leaves : color illustrations ; 30 cm.
dc.identifier.itemidB162721
dc.identifier.urihttps://hdl.handle.net/11693/115848
dc.language.isoEnglish
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectComputational design
dc.subjectHomogenization
dc.subjectTwo-scale performance
dc.subjectElectroactive solids
dc.titleHomogenization-based computational design and two-scale performance optimization of electroactive structures
dc.title.alternativeElektroaktif yapıların türdeşleme temelli hesaplamalı tasarımı ve iki ölçekli davranış eniyilemesi
dc.typeThesis
thesis.degree.disciplineMechanical Engineering
thesis.degree.grantorBilkent University
thesis.degree.levelMaster's
thesis.degree.nameMS (Master of Science)

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
B162721.pdf
Size:
29.22 MB
Format:
Adobe Portable Document Format

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
2.1 KB
Format:
Item-specific license agreed upon to submission
Description: