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Strength Design Methods for Laminated Glass

Publiceringsår: 2011
Språk: Engelska
Sidor: 76
Publikation/Tidskrift/Serie: LUTVDG/TVSM--11/3071--SE (1-76)
Dokumenttyp: Licentiatavhandling
Förlag: Structural Mechanics, LTH, Sweden

Sammanfattning

In this thesis, methods for efficiently determining stresses in laminated glass structures are
developed and tested. The laminated glass structures comprise both bolted and adhesive
joints.
A recently developed finite element is suggested to be suitable for the modeling of laminated
glass structures. The element is implemented and tested. It is proven by means
of a simple test example that the element can be used in finite element analysis of laminated
glass structures and give a good accuracy with a small fraction of the corresponding
model size using standard solid elements. As an illustration of how the element would
perform when more complicated glass structures are concerned, a similar element is implemented
in the commercial finite element software ABAQUS and is used to analyze
a laminated glass structure comprising one bolt fixing. The element performs well both
when it comes to accuracy and efficiency. It is indicated that the new finite element is
well suited for modeling laminated glass structures.
The new finite element is rigourously tested and compared to standard solid elements
when it comes to the modeling of laminated glass structures. It is shown that the new finite
element is superior to standard solid elements when it comes to modeling of laminated
glass. The new element is applied to laminated glass structures comprising bolted and
adhesive joints. Good results concerning accuracy and efficiency are obtained. The results
show that the element may well be suited to model complex laminated glass structures
with several bolted or adhesive joints.
The new element is used in the development of a method to compute stress concentration
factors for laminated glass balustrades with 2+2 bolt fixings. The stress concentration
factors are represented graphically in design charts. The use of the design charts allow
the maximum principal stresses of the balustrade to be determined without using finite
element analysis or advanced mathematics. The stresses can be computed for an arbitrary
combination of geometry parameters of the balustrade.
It is illustrated how design charts for laminated glass balustrades with 3+3 bolt fixings are
developed.
Keywords: finite element, computational techniques, laminated glass, stress

Disputation

Nyckelord

  • Technology and Engineering

Övrigt

  • Svensk Planglasförening
  • Glasbranschföreningen
  • Swedish Research Council Formas
  • Anne Landin (associate professor)
  • Kent Persson
  • ISSN: 0281-6679

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