Dear friends,
I am modelling a B21 (beam element) in Abaqus Explicit, how can I input values for bending stiffness of my beam? Thank you!
There is an issue of nonlinear model for B21 and B31 beam element in ABAQUS. Either you can write UMAT script as its clearly mentioned in following publication, or you can try a procedure exaplained in manual (but no one has published that).
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Hi Sadiq, thank you for your answer. Do you know exactly where the procedure is explained in manual? I am not familiar with UMAT so I have no choice.
Well its not very simple to write UMAT. but in literature, very few authors used B21/B31 beam element with nonlinear behaviour by UMAT using ABAQUS which uses the uniaxial concrete constitutive model proposed by Mander et al. (1988a, 1988b), which takes into account the influence of various types of confinement by defining an effective lateral
confining stress. To write UMAT, you can learn FORTRAN and PYTHON and can incorporate above mentioned procedure.
For the 2nd portion of question regarding bending stiffness. You will assign in plane thickness using "Profile" attribute, then software will calculate inertia itself, and young modulus you can define in material attribute.
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