3.7 Structural analysis
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1319 – Recommendation for the Evaluation of Fire Performance and Approval of Large Fire Doors – (11 June 2009) - Annex – Recommendation for the Evaluation of Fire Performance and Approval of Large Fire Doors - 3 Doors larger than those in section 1 above, but not exceeding 50% in surface area - 3.7 Structural analysis

3.7 Structural analysis

  3.7.1 Using the results of the heat transmission analysis and information on temperature-dependent material properties, the thermal stresses and deformations on the geometry are evaluated. When modelling the structural assembly, attention should be paid to using a sufficient number of elements to account for the non-uniform temperature distribution within the member and to catch the non-linear temperature-dependent behaviour.

  3.7.2 Once the model is prepared, the analysis should be carried out stepwise. For each element, the incremental strain or deformation caused by a temperature increase is calculated and a new stress level is obtained based on the stress-strain relationship applicable for that particular temperature increase.

  3.7.3 The mechanical boundary conditions should be congruent in order to represent the real interaction of the door with the external frame for the overall length of the test.

Parent topic: 3 Doors larger than those in section 1 above, but not exceeding 50% in surface area
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