Meshing reinforced concrete I-girder
I am attempting to analyse longitudinal shear (interface shear) between a precast post-tensioned concrete I-girder and cast in situ concrete deck as part of a bridge using ANSYS. I am having some trouble getting the model to mesh correctly between the contact points of the rebar and concrete. I have attempted to follow the methods used my many others found online using the SOLID65 and LINK180 element types for the concrete and rebar respectively. I have defined all of my rebar as lines (using the lines from sketches method) and assigned them a cross section. I have selected the 'add frozen' option for this as I believe this is necessary in order to assign the different materials to the concrete/steel bodies. When I mesh the overall structure, I am finding that ANSYS does not recognize the two different bodies and align nodes along the surface of the rebar and instead appears to mesh the girder as though the rebar is not even there.
How can I fix this and enable the meshing to conform around the rebar so that there is the appropriate nodal connection between the two materials so that the structure acts compositely? Surely there is a better way to do this then the cut/extrude an identical volume from the concrete body for each rebar? Any help would be greatly appreciated.
Note that I haven't finished adding in the reo to the model including the PT.