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Beam with non unoform

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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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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

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