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

Abstract

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Insulation failure of lightweight composite sandwich panels exposed to flame

“…Moreover, curving of the specimens and length changes of both faces caused propagation of a gap in the interlocking joints between the panels resulted in heat transfer to the unexposed surface and hence, insulation failure. This failure mode of the specimens was in accordance with theoretical modellings and findings of previous studies 17,19,21,33 . This failure was detected in the images captured by the thermal camera as displayed by Figure 12.…”

“…This failure mode of the specimens was in accordance with theoretical modellings and findings of previous studies. 17,19,21,33 This failure was detected in the images captured by the thermal camera as displayed by Figure 12.…”

“…The importance of perfect bonding between the core and skins of the composite panels was modelled and studied as the difference in thermal conductivity and non‐uniform temperature gradients during heat transfer has a significant role in fire resistance of the composite panels 20 . De Boer et al 21 simulated and modelled the behaviour of sandwich panel façade systems under two‐way coupled fire test through computational fluid dynamics and finite element method. In their simulations, influencing factors such as exposure of the both faces to fire and failure modes such as bending and rupture of the panels, deformations of the panels and opening of gaps between them and failure of fixing screws were analysed.…”

Influence of Horizontal and Vertical Barriers on Fire Development for Ventilated Façades

“…1.1.1. Numerical Analysis One of the main advantages of numerical simulation is the ability of studying a number of aspects of the fire propagation avoiding the high costs of laboratory tests [10,11]. In computer-simulation study, Giraldo et al [10] have given a representative image of the spread of fire depending on the barrier type and characteristics, insulation, and the width of the air cavity.…”

Evaluating the fire risk associated with cladding panels: An overview of fire incidents, policies, and future perspective in fire standards

“…157 In terms of façade systems, there have been numerous computational studies on fire scenarios. [158][159][160][161][162] Some of them investigate elements of the façade such as air cavity 163,164 and material type, 165 while others focus on simulation of full-scale façade systems. 166,167 Due to the massive computation resources and high model complexity involved in full-scale façade simulations, most of the numerical studies focus on specific geometric elements.…”