Hello, have a small question regarding simulation:

I have made a simple model (as attached pic.) with bolted a connection. Load is in the middle - 15 kN.

I get somewhat large forces on bolts in X direction - 9.1 kN. This type of connection should MAINLY carry shear loads and only "small portion" of bending should be transferred to the bolts. 

I have replicated same simulation using Nastran, there I got a lot smaller (~2 kN instead of 9.1 kN) X - direction forces (also smaller displacement of the beam).

Anny ideas of large X - direction forces? Thanks.