4.16.16. Pipe Section

section('Pipe', secTag, do, t, <'-alphaV', alphaV>, <'-defaultAlphaV'>, <'-rho', rho>)

The pipe section should be used with Elastic Pipe Element and Curved Pipe Element for pipes.

secTag (int)	unique section tag
do (float)	the outside diameter of the pipe
t (float)	the thickness of the pipe wall
alphaV (float)	the shape factor for shear distortion and must follow the option '-alphaV'. This is optional to be set by the user.
'-defaultAlphaV' (str)	use the option to set the shape factor to the default value \(\alpha_V = \frac{4}{3}\frac{r_o^3-r_i^3}{(r_o^2+r_i^2)(r_o-r_i)}\) where \(r_o=d_o/2\) and \(r_i=r_o-t\). If neither '-alphaV' nor '-defaultAlphaV' is used, the shear distortion is ignored. If both are given, the last one is used.
rho (float)	the mass per unit length of the section, which is used as mass coefficient in the dynamic analysis and will not be used to apply the gravity load, which should be added using the ops.eleLoad command. Default is 0.