Fermo - buckling

• non-linear, biaxial analysis of the buckling stability according to EN 5.8.6
• geometric and physical non-linear calculation at the deformed system with the load step method
• consideration of the contribution of the concrete between the cracks (Tension Stiffening)
• consideration of varying load application points (BE, TE, neutral axis, arbitrary)
• horizontal imperfection user-defined or automatic affine to the 1. eigenmode
• the creep influence can be considered in the automatic calculation of the imperfection
• user-defined or automatic combination generation for up to 4 different points in time, respectively, support systems: transport support, assembly support, finishing and t∞ with final support
• separate reduction of the torsion stiffnesses in condition I and II
• output of all relevant system limit load factors
• output of the non-linear stress resultants for the 1,0-fold system limit load
• output of the effective stiffnesses due to the 1,0-fold system limit load
• shear force and torsion bearing capacity due to the 1,0-fold system limit load
• flange connecting reinforcement due to the 1,0-fold system limit load

The program application uses the powerful FEM technology of TRIMAS® for the ultimate load design in cracked state. This provides the following special features:

• Realistic system modelling for the lateral buckling analysis in the case of slender beams
• realistic evaluation of transportation and construction stages
• Evaluation of stiffness degrading caused by box outs
• Economic verification for highly utilised systems