Issue 61

Y. Hadidane et alii, Frattura ed Integrità Strutturale, 61 (2022) 69-88; DOI: 10.3221/IGF-ESIS.61.05

FE:

Finite element. Height of profile. Width of flange. Thickness of flange. Thickness of web.

h :

f b : f t : w t :

w d : Height of web. C:

Length of dropped edge.

t :

Section thickness.

p h : Height of web. bp 1 , bp 2 : Initial effective widths. Cp 1 ,Cp 2 , Cp 3 , Cp 4 : Initial effective width of flanged edges. le 1 , le 2 : Effective sole widths. eff 1 C : Effective width of flanged edges. L: Length of beam. Ɵ : Orientation angle f ୷ : The yield strength of steel. u f : Ultimate strength. E: Elasticity module. ϑ : Poisson coefficient. u b : ply width. i C : flange width. i d : height. i S : distance between plies. i θ : Rotation angle. i R : Ply radius. si b : Edge ply rotation surface. eff b : The effective width. C, Rd M : The calculation value of flexural strength with respect to a main axis of the section. sd M : The bending moment at the ultimate limit state. sd V : Shearing force at the ultimate limit state. P: Concentrated load. a: lever arm pl , Rd V : Design value of the plastic shear strength. eff , y I : Effective moment of inertia with respect to the axis (yy). eff , y W : Modulus of resistance cross section. c Z : Compressed zone. t Z : Tensile zone. max, Ed σ :The maximum compressive stress. yb f : Elastic limit 1 M γ : Safety factor ψ : Ratio of moments in segment. g A : The gross cross-sectional area. K : Numerical coefficient depending on the type of forming. n : Number of 90 ˚ bends in the cross section.

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