The basic idea in composite construction is to use the advantages of both steel and concrete materials while avoiding their inherent disadvantages. In order for this idea to work, steel and concrete parts should be fully connected so that no delamination and/or slip can occur between the two parts. This research focuses on numerically studying a new type of composite floor system with cold-formed steel having an innovative type of shear connector.In numerical simulation of structures having steel embedded in concrete, it is customary to assume that there is a perfect connectivity between the two materials (i.e., no slip condition). Such an assumption is accepted to be appropriate where the shear transfer is provided by shear studs or other similar interlocking mechanisms. However, in the composite system discussed above, the shear transfer relies on the bond-slip behavior of the smooth steel surface with concrete which is a new idea never used before. Thus, it is important to investigate the performance of such shear transfer mechanism.
In this simulation three dimensional space to model concrete,steel floor,steel beam and rigid bodies has been used.You can see a figure about the positions of parts at below
Concrete is modeled as a elastic material, steel as elastic -plastic .General static analysis is appropriate for this type of analysis. The important point in this simulation is that the joint between two steel parts and it can bee screw or bolt or beam. In this simulation beam element joint is used to create behavior between two steel part and after simulation the areas which these element are used would be critical area as stress distribution. You can see some figures of this simulation at below
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