[b]ABAQUS CAE - tensile behavior input for RC Slab[/b]
[b]ABAQUS CAE - tensile behavior input for RC Slab[/b]
(OP)
Dear Abaqus users,
Iam modeling and analysing a simply supported RC Slab with Concrete Damaged Plasticity on Abaqus CAE. Concrete slab is modelled with C3D20 solid elements and steel bars are modelled on Truss element T3D2 which are embedded into concrete. My results show very high force vs deflection graph, i.e. the loading force is high (around 800-100kN) when the behavior of slab begins to yield. These values are far out when compared to my experimental test results which is around 80kN. I have chosen a tensile stress of concrete to a minimum value of 0.05 to 0.1% of fcu (41.24N/mm2), i.e. around 2.06 to 4.12 N/mm2, for Abaqus input tensile behavior. My query is that how to lower down the force vs graph curve so that it would match the experimental tests results? Thanks in advance for any kind helps.
Iam modeling and analysing a simply supported RC Slab with Concrete Damaged Plasticity on Abaqus CAE. Concrete slab is modelled with C3D20 solid elements and steel bars are modelled on Truss element T3D2 which are embedded into concrete. My results show very high force vs deflection graph, i.e. the loading force is high (around 800-100kN) when the behavior of slab begins to yield. These values are far out when compared to my experimental test results which is around 80kN. I have chosen a tensile stress of concrete to a minimum value of 0.05 to 0.1% of fcu (41.24N/mm2), i.e. around 2.06 to 4.12 N/mm2, for Abaqus input tensile behavior. My query is that how to lower down the force vs graph curve so that it would match the experimental tests results? Thanks in advance for any kind helps.





RE: [b]ABAQUS CAE - tensile behavior input for RC Slab[/b]
I suggest you first of all do a 'back of the envelope' calculation to check what maximum load might be expected.
I also strongly suggest that you carefully check that you are modelling the test correctly in terms of things like material properties, truss element attributes, model boundary conditions, position/distribution of load, proper account taken of symmetry conditions (if any), coupling between the concrete C3D20 and T3D2 re-inforcing elements.
RE: [b]ABAQUS CAE - tensile behavior input for RC Slab[/b]
RE: [b]ABAQUS CAE - tensile behavior input for RC Slab[/b]
RE: [b]ABAQUS CAE - tensile behavior input for RC Slab[/b]
RE: [b]ABAQUS CAE - tensile behavior input for RC Slab[/b]
Concrete slab dimension is 1600*1600*150mm thk. 6 numbers of 12mm diameter bars in each direction. Uniformly distributed loading at the top entire area of slab. How to set Abaqus so that the analysis will stop at failure? So far my curve of force vs deflection goes on and on, in plastic region without stopping.
RE: [b]ABAQUS CAE - tensile behavior input for RC Slab[/b]
Nagi Elabbasi
Veryst Engineering
RE: [b]ABAQUS CAE - tensile behavior input for RC Slab[/b]
RE: [b]ABAQUS CAE - tensile behavior input for RC Slab[/b]