Thermomechanical modelling of sandwich panels with connections in fire resistance tests

This paper presents two full-scale fire resistance tests of sandwich panels with connections, to verify one way coupled fire-structure simulations. The heat transfer simulations agree well with the tests, however, the structural response simulations show some differences compared to the start of the first test, which is a sandwich panel façade....

Insulation pyrolysis for sandwich panel fire-structure simulations

A sandwich panel, as a very important component in building façade systems, consists of two thin walled plates plus an insulation core. For this core, traditionally materials like mineral wool have been used. However, polymer composites are increasingly used instead, for among others their higher stiffness, and better resistance to wind and...

Implementation of a pyrolysis model in two-way coupled fire-structure simulations

A two-scale FE model to address connections in coupled fire-structure simulations

A two-scale finite element model is proposed to improve two-way coupled fire-structure simulations. The model consists of (i) a global-scale model, which accounts for the structure, and (ii) a small-scale model for each connection. Structural parts on the global scale are connected by spring elements, which stiffness properties are updated by...

Buckling and Wrinkling of rectangular hollow sections curved in three-point-roll bending

Curved aluminium extrusions are applied in a wide range of industrial applications. Because extrusions are initially straight, an additional process is required to curve the product. Undesired wrinkling of the plate part at the inner radius is frequently observed during the curving process. Wrinkling has already been extensively studied for the...

Bolt connection model for multi-scale two-way coupled fire thermo-mechanical facade simulations

A multi-scale approach is proposed to simulate the fire resistance of panels used in façades of buildings: Using existing models, fire is modelled by CFD, its effects in the façade found via a thermodynamical model. Then a thermomechanical model predicts the mechanical behaviour, using linear elastic springs for the connections holding the...

Two-way coupled CFD fire and thermomechanical FE analyses of a self-supporting sandwich panel facade system

A self-supporting sandwich panel facade system under fire is studied. First, a thermomechanical FE model, which comprises the complete facade system, and incorporates material degradation and geometrical nonlinear behaviour except for the insulation material and connections, is loaded by a fire temperature curve. Eurocode design rules then...

Representativeness of compressed flange behaviour for trapezoidal stell sheeting under combined web crippling and bending

An existing theoretical model indicates that the behaviour of trapezoidal steel sheeting under combined web crippling and bending moment may be modelled by only the sheeting's compressed flange. Therefore, this paper presents finite element models that simulate only the compressed flange of the sheeting, applying a prescribed displacement field...

Glass panes acting as shear wall

The in-plane stiffness of glass panes can be mobilized to stabilize a steel framework e.g. in a façade. The brittle glass pane has to be structurally bonded to the framework and a circumferentially glued joint is then an appropriate technique. The joint type and adhesive determine the stress distribution in the pane and the horizontal...