liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Stiness and Lay-up Optimization of Composite Structures based on a Homogenized Material Approach
Linköping University, Department of Management and Engineering, Mechanics. Linköping University, The Institute of Technology.
Linköping University, Department of Management and Engineering, Mechanics. Linköping University, The Institute of Technology.ORCID iD: 0000-0001-8460-0131
Linköping University, Department of Management and Engineering, Solid Mechanics. Linköping University, The Institute of Technology.
2013 (English)Manuscript (preprint) (Other academic)
Abstract [en]

In the present work we propose a two phase composite structure optimization method based on a novel material homogenization approach. It consists of a stiffness and a lay-up optimization problem, respectively, with the aim of obtaining manufacturable composite structures with maximized stiffness properties. The method is applied to a cantilever plate, and numerical tests were performed for three load cases and for a number of parameters settings. The results show that the proposed method can obtain manufacturable composite structures with maximized stiffness properties. In the first phase of the method, the stiffness optimization problem provides an optimal distribution of the composite material, such that the stiffness properties of the structureare maximized. The second phase, the lay-up optimization problem, provides a manufacturable lay-up sequence of discrete plies which attempts to retain the stiffness properties of the structure from the first phase.

Place, publisher, year, edition, pages
2013.
Keyword [en]
Fibre-reinforced composites, Composite structures, Material homogenization, Lamination parameters, Variable thickness sheet, Stiffness optimization, Lay-up optimization, Stacking sequence optimization, Manufacturing constraints
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-102315OAI: oai:DiVA.org:liu-102315DiVA: diva2:676161
Available from: 2013-12-05 Created: 2013-12-05 Last updated: 2017-05-15Bibliographically approved
In thesis
1. Composite Structure Optimization using a Homogenized Material Approach
Open this publication in new window or tab >>Composite Structure Optimization using a Homogenized Material Approach
2014 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

The increasing use of bre-reinforced composite materials in the manufacturing of high performance structures is primarily driven by their superior strength-toweight ratio when compared to traditional metallic alloys. This provides the ability to design and manufacture lighter structures with improved mechanical properties. However, the specic manufacturing process of composite structures, along with the orthotropic material properties exhibited by bre-reinforced composite materials, result in a complex structural design process where a number of dierent design parameters and manufacturing issues, which aect the mechanical properties of the composite structure, have to be considered. An ecient way to do this is to implement structural optimization techniques in the structural design process thus improving the ability of the design process to nd design solutions which satisfy the structural requirements imposed on the composite structure.

This thesis describes a two phase composite structure optimization method based on a novel material homogenization approach. The proposed method consists of a stiness optimization problem and a lay-up optimization problem, respectively, with the aim to obtain a manufacturable composite structure with maximized stiness properties. The homogenization material approach is applied in both optimization problems, such that the material properties of the composite structure are homogenized. In the proposed method the stiness optimization problem provides a composite structure with maximized stiness properties by nding the optimal distribution of composite material across the design domain. The aim of the lay-up optimization problem is to obtain a manufacturable lay-up sequence of bre-reinforced composite plies for the composite structure which, as far as possible, retains the stiness properties given by the stiness optimization problem. The ability of the composite structure optimization method to obtain manufacturable composite structures is tested and conrmed by a number of numerical tests.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2014. 19 p.
Series
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1632
National Category
Engineering and Technology
Identifiers
urn:nbn:se:liu:diva-102316 (URN)10.3384/lic.diva-102316 (DOI)LIU-TEK-LIC 2013:66 (Local ID)978-91-7519-453-0 (ISBN)LIU-TEK-LIC 2013:66 (Archive number)LIU-TEK-LIC 2013:66 (OAI)
Presentation
2014-01-14, A31, A-huset, Campus Valla, Linköpings universitet, Linköping, 13:15 (English)
Opponent
Supervisors
Available from: 2013-12-05 Created: 2013-12-05 Last updated: 2017-05-15Bibliographically approved

Open Access in DiVA

No full text

Authority records BETA

Hozić, DženanKlarbring, AndersTorstenfelt, Bo

Search in DiVA

By author/editor
Hozić, DženanKlarbring, AndersTorstenfelt, Bo
By organisation
MechanicsThe Institute of TechnologySolid Mechanics
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 174 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf