A Simple Weld Analysis

This is a trial for a little weld problem. The idea is to have a certain weld, and vary the proportion of loading due to the beam axis constraint and the load traction across the weld.

This is a diagram of the non-linear boundary conditions imposed.

An example input file excerpt for the new boundary condition follows:

 
  **beam_deflection
   *L   400.0 
   *EI  200000.0 2.54e4 
   *center_displacement load    -0.2 time
   *neutral_axis        neutral 
   *end_face            y=20    (0. 20. 14.)