I modeled a concrete beam using Abaqus (Dynamic Explicit, CDP model, 10mm mesh) and compared the numerical and experimental load-displacement curves. While the peak load matches well, the initial stiffness and post-peak behavior show significant differences. What could be the possible reasons for this discrepancy?
Jürgen Ries
Within my project I used "Mela" as the material model within Ansys. The modeled force-displacement-curve was depended from both mesh size and time step. To come close the the physical reality I had to minimize mesh size and time step.
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