Learning Forum

[mostafam]

Hi

Here is a determinate beam which is fix supported from the left and pin supported on the right. Point B is an internal hinge where the bending moment is equal to zero. Modeling such problem using beam element in LS-DYNA is easy and I was able to do that. But, because of verification purposes I need to model the same problem using solid elements instead of beams. In order to apply the hinge at point B, I am looking for a proper way.

I have tried to apply discrete zero length beam instead of the hinge, but I was not successful in verifying the hand calculations. Has anybody modeled such hinge connection between two solid element in LS-DYNA before?

Thanks

[Ram Gopisetti]

Hi 

When you say hinge, you have two methods, 

CNRB approach: create a CNRB ( constrained nodal rigid bodies) connection between two solid parts and then resolve the components via (Boundary_ prescribe _ motion_rigid infer the PID of this CNRB )such that rotation is free and the rest of the components are 0

Joint approach: you can model the revolute joint as given in the link

 

Also, on a simple approach, you can use the SPC with a Rotational component to 0 

Happy Simulation,

Ram.