I found this on ABAQUS user manual and can't understand it
" For example, applying a boundary condition of type XSYMM to node set EDGE indicates that the node set lies on a plane of symmetry that is normal to the X-axis (which will be the global X-axis or the local X-axis if a nodal transformation has been applied at these nodes). This boundary condition is identical to applying a boundary condition using the direct format to degrees of freedom 1, 5, and 6 in node set EDGE since symmetry about a plane X=constant implies Ux=0, Φy=0 , and Φz=0. "
If anyone can explain this sentence it will be great help.
http://dsk.ippt.pan.pl/docs/abaqus/v6.13/books/usb/default.htm?startat=pt07ch34s03aus118.html#usb-prc-pboundary
you gotta first need to read basic FEA theories...your question is entirely wrong suggesting you have not read the underlying theories.
Dear Adil,
Depends on the type of boundary condition you use the definition could be vary. Using symmetry boundary condition, one can define XSYMM in the .inp file which is equivalent to using the displacement boundary condition by delimiting the displacement on x direction (DOG 1) and rotations about y and z direction (DOGs. 5 and 6).
I suggest you read carefully the abaqus manual section 34.3.1
Thanks Erfan Azinpour for the answer. I am finding it difficult to understand how the node sets lies on plan of symmetry normal to X axis. The other part is fine that dof 1,5,6 are restricted.
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