[Gmsh] how to mesh rods
jean pierre aubry
jeanpierre at lamachine.fr
Tue May 26 08:31:03 CEST 2009
hello
i have to model a structure made of beams and sustaining rods or cables,
think of a suspension brigdge
rods have no flexural rigidity and must be modelled as a single element along their length
otherwise the matrix will be singular
here is a small example model, 4 nodes and 3 lines
P1 P2
+--------------------L1--------------------+
|
|
L3
|
||
+--------------------L2--------------------+
P3 P4
i want Line L1 and L2 to be meshed as beams with (ideally) equally spaced nodes along them
but
i want Line L3 to be meshed as a ROD i e one single finite element along its length -NO INTERMEDIATE NODES-
how to apply « Charcateristic Length » at the Points to do that
or any other clever way to it
I mean more clever than altering *.msh file by hand the saving it as *.med or *.unv and repeating that process every time a change is made
anybody has a good idea
thanks
jean pierre
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