4.15.1. Elastic Section

section('Elastic', secTag, E_mod, A, Iz, G_mod=None, alphaY=None)

section('Elastic', secTag, E_mod, A, Iz, Iy, G_mod, Jxx, alphaY=None, alphaZ=None)

This command allows the user to construct an ElasticSection. The inclusion of shear deformations is optional. The dofs for 2D elastic section are [P, Mz], for 3D are [P,Mz,My,T].

secTag (int)	unique section tag
E_mod (float)	Young’s Modulus
A (float)	cross-sectional area of section
Iz (float)	second moment of area about the local z-axis
Iy (float)	second moment of area about the local y-axis (required for 3D analysis)
G_mod (float)	Shear Modulus (optional for 2D analysis, required for 3D analysis)
Jxx (float)	torsional moment of inertia of section (required for 3D analysis)
alphaY (float)	shear shape factor along the local y-axis (optional)
alphaZ (float)	shear shape factor along the local z-axis (optional)

Note

The elastic section can be used in the nonlinear beam column elements, which is useful in the initial stages of developing a complex model.