Bolt, rivet modeling with CELAS2 or CELAS1 element??

[naeng]

Hi:

I have seen perform an analysis of a bolted joint with a CELAS2 or CELAS1 (grounded element), and get the forces in the three main directions from de CELAS element (x,y,z direction), but i don´t know how to do this because to configure the celas element, it just can define the stiffness in one direction.

So, i will be very grateful if someone could explain me how to perform an analysis like this with celas elements, Could be it necesary use more than one celas element per bolt/rivet?

Thanks in advance.

 

[franc11HD]

Yes, you can use more than one CELAS for the same bolted joint. One per degree of freedom. Or you can use CBUSH elements which allow to define stiffness in all six direction with a simple element.