Beam with non unoform

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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