I am doing a contact analysis with fasteners in a bolted assembly which has more than 600+ fasteners, have nearly 50 parts and 500+ instances. So I model the fasteners as discrete rigid and then applied general contact with friction 0.5.
Is it necessary to have node connectivity in between every two parts.
As per basic concepts of Finite Element analysis [ BT][D][B]=[f]
for the assembly of the stiffness matrix we should have common nodes which is transferring the load to another part, as per my reviewer.
Is it necessary to have such connectivity? because in that case I have to make so many partitions in my part as well as my assembly.
Please help
When we had for examples two plates connected with many fasteners we used the following models plates are disconected in terms of nodes each fastener (beam) is connected to upper surface of the upper plate and to lower surface of the lower plate. Plate where modelled with solid beam. The model is well validated of the shear stresses, computed as a sum of the shear stresses from all beam - fasteners.
The model is widely used in aircraft engineering
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