Fire Scenario for a Composite Frame
The example below was taken from Upmeyer, Dissertation Universität Hannover 2001 and is based on a fire test conducted in Brauschweig in 1995.
The fire stress occurs according to the standard temperature-time curve. Flame is applied to the frame member from the bottom and to the frame strut from all sides.
Geometric and physical nonlinearities are included in the time-step calculation process. At the end of the calculation, the time-dependent deformations, internal forces and support reactions are available.
The time displacement curve depicted below matches the test results very well. Even the calculated failure time of 149 min differs only slightly from the test result (150 min).