Rho

enter the mass density of the material of the beam.

E

enter the Young’s modulus of elasticity.

G

enter the shear modulus of elasticity.

OD

enter the outer diameter of the polybeam cross section.

ID

enter the inner diameter of the polybeam cross section.

AS

enter the correction factor for the shear deflection.

CRatio

enter the stiffness to damping matrix ratio.  The damping matrix for the polybeam is computed by multiplying the stiffness matrix by the C ratio.