Change search
ReferencesLink to record
Permanent link

Direct link
Utvärdering av glasfiberrör för ramkonstruktion: Alternativa material och design
KTH, School of Engineering Sciences (SCI).
2016 (Swedish)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesisAlternative title
Utvärdering av glasfiberrör för ramkonstruktion : Alternativa material och design (Swedish)
Abstract [en]

 Better Shelter is an organization that provides temporary shelter units for refugees in the nearby areas. The organization needs to evaluate the current glass fiber pipes in the framework construction to be able to replace the component with a less costly alternative. In this thesis focus is put on the structural analysis of the glassfiber pipes. Alternativematerials and cross-sectional designs are evaluated with respect to their performance, weight and cost.

The  results of this study are based on analytical calculations, modeling in FEM- programsand testing of the material. The glass fiber pipes’performance is evaluated by using theFEM--‐program ANSYS Workbenchtoanalyzetheconditionofthecomponent’stress,strainanddeformation. Material testingisconductedtoverifytheglassfibers’elastic--‐modulus.Furthermore,analytical calculations were conducted to compare the alternative materials and cross--‐sectional design. The limitations of the project included material analyzed which was limited to fiberglass, steel, aluminum and magnesium alloy. The cross--‐sectional designs evaluated were circular, oval, square and rectangular. Finally, a 3D simulation of the shelter unit was done with ANSYS Mechanical which calculated the deformation for thedifferent construction material. The existing fiberglass pipes have a maximum performance of 874 N which corresponds to a wind speed of 23.8 m/s and a maximum deformation of 0.41 m.

The elasticity modulus of the glass fiber is estimated to 37.7 GPa, which deviates by 7.7% from the product specification.

Fiberglass is the most optima lsolution in regards to weight compared to alternative materials. From a cost perspective, aluminum is the best option as it is within reasonable limits. The square tubes are the most favorable option considering both weight and price, regardless of material and performance requirements.

The best option to replace the current fiberglass pipes are square aluminum tubes. Such a change means a price reduction of 5.58 SEK/pipe but a weight gain of about 240 g/pipe. The maximum deformation of the module housing in ANSYS Mechanical for glass fiber is estimated to 36.9 mm on the house's long side, and the maximum deformation on the short side is estimated to 163.6 mm.

Place, publisher, year, edition, pages
2016. , 49 p.
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-195656OAI: oai:DiVA.org:kth-195656DiVA: diva2:1044874
Available from: 2016-11-07 Created: 2016-11-07 Last updated: 2016-11-07Bibliographically approved

Open Access in DiVA

fulltext(2804 kB)14 downloads
File information
File name FULLTEXT01.pdfFile size 2804 kBChecksum SHA-512
b8491721dc53dec0f78f04f91493f5106f833954dc74e542b4cc54a4dd50ad03689fc1a6e624ee1f5a14bcdd7af27f314f441e85e41df78e5ccf18bbd6e74041
Type fulltextMimetype application/pdf

By organisation
School of Engineering Sciences (SCI)
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 14 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Total: 7 hits
ReferencesLink to record
Permanent link

Direct link