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Convergence of Reinforced Concrete in ANSYS

Convergence of Reinforced Concrete in ANSYS

Convergence of Reinforced Concrete in ANSYS

(OP)
Hello,

I am a bit new with ANSYS, and I am having some difficulties.  I am modeling Reinforced Concrete, and I'm having some troubles getting the model to converge at the cracking load.  I am trying to validate ANSYS with a simply supported reinforced concrete beam under third point loading.  I have modeled the concrete with the Solid65 element and the reinforcement with the Link8 element.  My elements are relatively small, with approximately 3000 elements for the quarter model.  I set the convergence criteria tolerances to 0.5% for forces and 5% for displacements.  I also decreased my load step so it is applying less than a pound when trying to get past the initial cracking of the beam.  The only way I was able to get the model to converge was to remove the force convergence criterion, but I'm afraid by doing that, I am going to get erroneous results.  Any suggestions or reference materials would be greatly appreciated.

Thanks

RE: Convergence of Reinforced Concrete in ANSYS

Dear

Try using keyopt(7)=1 or the undocumended keyopt(7)=2

Regards

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