THERMOTECHNICAL CALCULATIONS OF TWO-DIMENSIONAL TEMPERATURE FIELDS IN POLYMER COMPOSITE STRUCTURES WITH INTUMESCENT FIRE PROTECTION

The actuality of developing software for thermotechnical calculations of two-dimensional unsteady fields in various-configuration polymer composite structures with intumescent fire-protective coats is substantiated. The necessary of their use to determine designed thicknesses of the fire protection and to perform static calculations for the estimation of fire-resistance limits of composite building constructions is shown. The software has been developed. The results of a series of calculations for two-dimensional temperature fields for an advanced variant of composite structure consisting of a thin-layer cylindrical shell with the intumescent coat and a basic load-bearing cruciform element are presented. The importance of obtained results for the design of similar polymer composite structures with a required level of their fire safety is noted.