3D Beam and analytical shell contatct

[drillingkid]

Hi folks! I'm having big a issue about defining contact between a 3D beam and an analytical surface in ABAQUS standard. The problem is I should have to use node-to-surface contact intead suerface-to-surface. The analytical must be the master surface by definition

Problem is that The contact occurs between central beam line and the master surface. Is there another way of using analyticial surface with a beam in such a way. I really wanted to use it beacuse of low computational cost and ease of usage.

That is the mesage I receive from the monitor before analysis starts:
Surface to surface contact approach for contact pair (assembly_pipe-1_surf-1,assembly_pin-1_pin_surf) is not yet available for 3d beam or truss slave surface. Node to surface approach will be used instead.

The deformed shape is pictured here

http://files.engineering.com/getfil...5b96a9e842&file=rendered_beam_vs_surface.jpg.

Thanks in advance.



Drilling Engineer @ Petrobras

 

[Mustaine3]

Contact with beams should be used within general contact. Beam-to-surface is active by default. Beam-to-beam not.
But for general contact you have to make you analytical rigid surface to a discrete rigid surface.

And be aware the the cross section used in contact is always circular, even if your actual cross section isn't circular.

Users Manual 36.2.1 Defining general contact interactions in Abaqus/Standard

The contact edges representing beam and truss elements have a circular cross-section, regardless of the actual cross-section of the beam or truss element. The radius of a contact edge representing a truss element is derived from the cross-sectional area specified on the truss section definition (it is equal to the radius of a solid circular section with an equivalent cross-sectional area). For beams with circular cross-sections, the radius of the contact edge is equivalent to the section radius. For beams with non-circular cross-sections, the radius of the contact edge is equal to the radius of a circumscribed circle around the section. Edge-to-surface contact for beam or truss elements is activated by including the associated surfaces into the general contact domain. By default, the all-inclusive surface contains surfaces based on beam or truss elements.

 

[drillingkid]

Mustaine3, thanks a lot. I really wanted to use analytical surface, but you found the text that states that its's impossible. I'm using a pipe in fact, so the circular shape around the beam wont be a problem. Thanks man!!!

Drilling Engineer @ Petrobras