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close gap between two shell structures

Altair Forum User

Hi,

I need your advice again.

I have two beams with a C crosssection. They are modeled by 2D-elements.

The beams are co-linear and I want to connect the Ends of both beams (Frames) to get one beam as there is a gap between them at the Moment.

A possibility would be the usage of RBE2, but I think closing the Gap between them with Shell elements is the best solution.

The mesh size differs a little bit.

Do you have some ideas how i can connect/Close the gap?

Thanks a lot

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Rahul Rajan_21763

Could you share snapshot of your model for better understanding?

Connection is possible via RBEs ,Rod ,bar & beam.It all depend based on loads boundary condition & element property.

Altair Forum User

This time it's not possible to share a screenshot, sorry.

Think of a C-Beam made out of Shell elements.

But there are some elements missing in the middle of the length of the beam. That results in two beams which are not connected.

I have to extend/Close thegap to get one beam again. So I want to fill it with Shell elements that connect one edge with the other.

Rahul Rajan_21763

Difficult to comment without snapshot.Connectivity is necessary to avoid rigid body motion.As said above use 1d element or extend shell element to ensure connectivity.

Altair Forum User

I built up a simple model with nearly same Problem to share a screenshot.

In my real model is no geometry, it's all FE-based.

<?xml version="1.0" encoding="UTF-8"?>

Rahul Rajan_21763

Is it a continous part ?I mean in real life how this C section is connected.

If you want to connect via mesh use ruled command with nodelist to nodelist with mesh delete surface option.