Computational analysis of resisting marine FRP divisions exposed to fire. Application to the analysis of ship structures.

This paper describes the research performed within the scope of H2020 project NICESHIP in the development of suitable thermo-mechanical framework to analyse composite structures under fire loads. The framework couples the thermo-mechanical model that is detailed in the paper with the Fire Dynamics Simulator (FDS) in order to obtain the adiabatic temperature needed as input for thermal model. The thermo-mechanical model uses the adiabatic temperature to estimate the temperature profile across the thickness of each quadrilateral shell element and also takes into account the pyrolysis effect. The composite constitutive model employed is the so-called Serial/Parallel Rule of Mixtures (SPROM) and has been modified to take into account the thermal expansion. Finally the thermo-mechanical model is validated against two literature tests and then the developed framework of fire collapse analysis is illustrated by a marine real application of a fire case scenario in the superstructure of a containership where steel and FRP divisions are analysed.