Naslov
Innovative design of fire doors: computational modeling and experimental validation

Autori
Moro, Luciano ; Boscariol, Paolo ; De Bona, Francesco ; Gasparetto, Alessandro ; Srnec Novak, Jelena

Izvornik
Fire technology (0015-2684) 53 (2017), 5; 1833-1846

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
fire door design ; finite element modeling ; fire test ; thermo-mechanical analysis ; infrared measurement

Sažetak
Usually the design of fire doors is carried out to fulfil thermal requirements only, whereas also thermal distortion could significantly affect the safety behavior of the door. Indeed, the door tends to bend away from its supporting frame due to a non-uniform temperature distribution, which could lead to flame and smoke propagation. In this work an innovative design scheme is proposed, where the mechanical response of the door is enhanced without affecting its insulating properties. This improvement is achieved by changing the disposition of the constitutive elements (insulating material and structural plates). The behavior of a conventional and of an innovative door during a fire test was simulated with three-dimensional (3D) finite element models. A non-linear thermo-mechanical transient analysis was performed as well. The numerical results were validated with an experimental campaign made on true scale specimens, where the doors were heated by a furnace reaching a maximum temperature of 950°C. The temperature distribution was measured with several thermocouples and an infrared camera, whereas displacements were monitored with a laser sensor. It was observed that, while temperatures on the unexposed surface were around 120°C in both cases, the maximum out-of-plane displacement measured in the innovative door was 3 times smaller than that of the conventional configuration.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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