RC Beam: Absolute Beginner
I have just started to model the RC Beam using ANSYS APDL. For the RC beam, I am using SOLID 65, LINK 180, and SOLID 185. SOLID65 for concrete, LINK 180 for reinforcements and SOLID 185 for support and loading plates. I entered the material properties. I created the beam by volume: first beam and then support and then loading plate. After that I Glued the all three volumes. Then I copied the end areas to the appropriate distances to get the line for reinforcement. Then I divided the volume by area and got the lines. By using component manager, I selected the top, bottom, and shear reinforcement and made new component.
For the meshing, first I mesh the lines of edge 25mm for the whole model. Then I put the attribute for each volume and reinforcement and using sweeping mesh to get rectangular mesh. (I don't know if there is any other way to get rectangular mesh of different height, length and breadth of mesh element). After the meshing, I merged everything from nodes to volumes.
Then I applied symmetry boundary condition at the right half of the beam (on nodes Ux=0) and applied UY=0 and Uz=0 at the middle nodes of the supporting plate. In the case of applying load, I am applying constant load FY in negative direction but applied in middle line of nodes of loading plates (not sure whether this is right way to applied the load). From the experimental result, the maximum load is 45kN. So, I applied the same amount of load.
I put the solution control values as guided by You tube videos with convergence tolerance of 0.05 for U. And then tried to solve the model but got convergence error.
Am I heading toward right way to model the RC beam?
How can I resolve this convergence error?
How can I get load deflection curve?
My ultimate goal is to apply CFRP to the beam.