Sudden Change of the Force -Displacement Curve

Chen_21280
Chen_21280 New Altair Community Member
edited October 2020 in Community Q&A

I've made a model of 3 point bending test. But there is always a sudden change of the curve. I want fix these sudden changes.

I've made the zentral nodes BSC, in Vx, Wz,/Vy.Wz.

Thank  very much for the help!
 

<?xml version="1.0" encoding="UTF-8"?>Anmerkung 2019-07-18 230403.png

<?xml version="1.0" encoding="UTF-8"?>Anmerkung 2019-07-18 230305.png

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Answers

  • Chen_21280
    Chen_21280 New Altair Community Member
    edited July 2019

    Anyone else can help me?

  • Simon Križnik
    Simon Križnik Altair Community Member
    edited July 2019

    Hi,

     

    the nonlinear force-displacement graph is consistent with geometric (buckling) or material (plasticity) non-linearity. Can you share the model or the engine out file?

     

    WARNING ID :  343 (INITIAL PENETRATIONS IN INTERFACE) should be removed.  In HyperMesh, go to Tools>Penetration and check the model for any penetrations. You can manually or automatically fix them. Please refer  HM-3320 tutorial in Help Menu which shows the steps.
     

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