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Strength Design Methods for Laminated Glass

Författare:
  • Maria Fröling
Publiceringsår: 2011
Språk: Engelska
Sidor:
Dokumenttyp: Licentiatavhandling
Förlag: Structural Mechanics, Lund University

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

Nyckelord

  • Applied Mechanics

Övriga

Published
  • Anne Landin
  • Kent Persson

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