Computer-aided methodology for predicting the collapse time of wooden floor exposed to fire utilizes coupled thermal-structural analysis with advanced numerical modeling techniques. By integrating pyrolysis models with structural solvers, the charring rate and resulting loss of load-bearing capacity can be predicted. Modeling temperature-sensitive material changes enables the precise identification of the collapse moment. Such precision enhances occupant evacuation timing and structural fire resistance planning

Project Highlights:

• The simulation accounts for total heat flux by integrating conduction, convection, and radiation into its thermal model.
• Incorporates the effect of wood charring that reduces the effective cross-section of the load-bearing timber.
• Accounts for internal energy release from wood charring, where the pyrolysis process adds fuel to the thermal load.
• Heat radiation from charred wood included. Once char forms, its high emissivity allows it to radiate heat significantly.
• The simulation exhibits highly non-linear behavior driven by wood charring and fluctuations in moisture content.
• Temperature-dependent modulus and strength lead to non-intuitive results within the model.