Plate Stress Interpretation using Von Mise and/or with Master Slave Command

Question

Hi, 
 Can anyone help me interpret the result of analysis where I modelled group of plates to resist a certain Pipe Load. 
 Loads are acted on Node 340 then Slaved to the point where the bolt of the U-type pipe support will be located. 
 My question is I am getting high values of plate stresses where I think it is too big for the load. 
 Maybe I am wrong and please enlighten me If my staad model is correct. 
 
 Thank you in advance. 
 Attached below is my Staad file 
 HPR-S03.STD

Modestas · Accepted Answer

I do not see any modeling issues. You might see some stress concentrations at the slaved nodes. To reduce the stress concentration, you may use some more slaved nodes at the location of each bolt.

Modestas · Answer

It is hard to say how rigid the connection is. If it can transfer moments, then I think RIGID master/slave can be used.

Plate Stress Interpretation using Von Mise and/or with Master Slave Command

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