joint beam to a solid problem

[javieerao]

Hi everyone!

im making a model (static structural) using steel material. this model has a cyclic load (displacements), im using a fixed joint to link a beam (solid element) to a beam element (beam 188 with cross section). the problem appears during the solving process when a message appears:

x JOINT ELEMENTS WITH LAG MULT OPTION DO NOT SATISFY JOINT CONSTRAINT CONDITIONS

on the other side of the beam element, i put a displacement support which is moving in one axis the system with tabular displacements.

The geometry that im using was drawn in autoCAD and im using large deflections analysis.

can you give me some tips or advices to solve my problem?.

 

[Shu Jiang PEng SE]

Beam has six degree of freedoms: x,y,z,,rx,ry and rz. solid element has only three degree of freedoms: x,y and z. The beam is not fully restrained if the beam and solid element share one node in the model. you can modify the beam so that the beam and the solid element share two nodes.