Beam with non unoform

Altair Forum User

Hello

I am just new in hyperwork.

I want to do displacement analysis for non unofrom beam as shown below.

i have 2 different cross section, i defined 2 hyperbeam, 2 properties and 2 component.

i use 3 nodes and use cbeam to connect the nodes, the define load step use optistruc to solve analysis, but my analytical value and value that optistruc is obtained are different.

i just thank that maybe i should use RBE2 in B, am I right?if yes how can i do that?

If no, what is my fault.

 

Big thanks

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Beta

HI Mohammad,

 

Please do not use RBE2 to do that. This is not really appropriate.

About the difference you got, Could you please tell us more about that? How much is that difference?

And to make it specific, Could you please share the stress result you got in A, B, the displacement in C in both OptiStruct and analytical job

Altair Forum User

Hi @mohammad

 

It would be better if you share the results from both simulation and hand calculations. 

Altair Forum User

Hi @Toan Nguyen @Prakash Pagadala,

Thank you for your reply.

Here my model, my result and my analytical calculation.

Thanks,

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Altair Forum User

3 hours ago, mohammad said:

Hi @Toan Nguyen @Prakash Pagadala,

Thank you for your reply.

Here my model, my result and my analytical calculation.

Thanks,

cbar.hm

I have found my mistake.

Thanks all.