Topic: Loading

Hello, we have this beam mode that we are trying to analyse. Its a four point bending test. But if we put two plates on top of the beam, at the end of the analysis the two loads are not equal, which theoretically should be equal. So we have put another plate at the top of the two plates and applied the load over that one single plate so that the distribution of the load is equal. We are concerned if this method of load application valid? For clearance, the screen shot of the model is attached.

https://drive.google.com/open?id=1nKpFO … BeZ-c5BI5W


Thank you to all in anticipation, have a good day

Re: Loading

Dear ali,
if you seek help/advice/comment related to your particular model, please follow ATENA Troubleshooting, 2.1.1 to send us your model along with information about what you are modelling (sketches/photos+explanation).

In this case, it is important how the load is distributed in the experiment - 2 pistons with the same pressure? A single piston + some distribution beam (how much free or blocked are its rotations)? 2 pistons with identical displacement? Something else?

Regards.

Re: Loading

Thank you for your response,

The load from the test machine was transferred through a stiff steel girder onto the test beam in the form of two equally concentrated loads. Means single piston

Regards

Re: Loading

Dear ali, as already explained, if you seek help with your particular modelling, please follow Troubleshooting, 2.1.1 to send us your model etc. - above all, sketches illustrating how the load distribution steel girder can move.

If 2 equal forces are the best approximation, you can apply 2 force loads and use the Arc Length solution method, see also Troubleshooting, 2.4.6.1.

Alternatively, you can include the girder in your model, and apply a single prescribed displacement.

Regards.