Compression only elements
Hi,
I'm tring to model a semplified 2D pin element using RBE and CBAR with rotational dof release along the normal to plane.
Due to geometrical and load condition the RBE express a tension/compression on dipendent nodes.
my question is: si possible using an element (such as rbe) that is rigid in compression and not rigid (deactivated?) in traction?
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Hi Rahul,
I'm a new user on Altair, could you provide a simple example (a model) of this method?
thanks
Please refer attached fem deck to get idea.
Hi!
I digged a bit deeper into it and maybe this can be useful.
So if I am not wrong on this, first thing for this to work is, that you have a non-linear subcase (non linear static for example) with a NLPARM card.
I went into some problems when defining the stiffnes to be completely zero for tension, but that seems to be a model issue only related to the simple example.
I attached the modified .fem file for future reference (also for mysel if I want to look it up again /emoticons/default_wink.png' srcset='/emoticons/wink@2x.png 2x' title=';)' width='20' /> )
Have a nice day!
Try PBUSD1D of type SPRING . You can specify different tables for spring stiffness in tension and/or compression. And specify very high stiffness for compression.