I modeled a 1D beam (B32) but I don’t know how to input deck format of the section moment(SOM) in .inp. Because the type of SOM is surface, but a 1D beam only have a node in a section. Please help me, think you!
SOM is a variable for *SECTION PRINT but it indeed requires specifying a surface name. You can define a surface consisting of beam element faces and even use it for section print but the question is if it makes sense because this won’t be cross-section of the beam but rather its side face.
Looking at the manual I can see the beams rear and front faces are missing from the faces list.
Manual:
For beam elements:
• Face 1: in negative 1-direction
• Face 2: in positive 1-direction
• Face 3: in positive 2-direction
• Face 5: in negative 2-direction
Note there are two numbers missing. One of them is the one you need.
• Face 4: 2-6-7-3 (Front face)
• Face 6: 4-8-5-1 (Rear face)
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beam internal force can directly request by ‘Section Forces’ keywords, but ‘Sectiion Print’ and predefined face similar to contact problem may have different purpose such as composed beams.
Note that actually there are some bugs reported for Reaction Forces on nodes belonging to shell and beam elements
Thank you very much for your reply, I seem to have found the answer I was looking for. In manual p.551, for 1-D beams (B32R), SURFACE can be composed of nodes or node set. Such as “Node or node set to be assigned to this surface (maximum 1 entry per line).”