General Mechanical

General Mechanical

[Concrete model] Menetrey-Willam model, Softening behavior

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      Hello.
       
      I always appreciate the valuable feedback I receive from everyone on this forum.
       
      I would like to post a question regarding the Menetrey-Willam model of concrete model.
       
      I have set up the MW model as shown in the attached image and am conducting compression tests (φ100 x 200 mm), but each time the softening behavior does not converge after the compressive strength of the concrete reaches its peak. In other words, the analysis ends at the peak.
       
      On the other hand, a past contributor to this forum (2021, Oct., Mick Mack) and a paper ("Calibration and Validation of the Menetrey-Willam Constitutive Model for Concrete") have shown that the MW model The softening after the peak is obtained by the MW model.
       
      How can I set up the model to reproduce the softening behavior after the peak?
      Thank you in advance for your advice.

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