Dear all,
I am trying to simulate a very simple compression test in abaqus/standard with axisymmetric symmetry. Not the probolem I have is, the force calculation is not sensitvie to the yield curve I give. For example, I give a linearly increasing yield curve with slope of 100, and then I give a yield curve with slope of 100.1 I get the same force in the first few increments during the calculation. I tried using double precision and also fully integrated elements. Could I do anything else to make abaqus sensitive for small changes in yield curve? Thanks, Aditya. |
so you specified a different youngs modulus? The yield curve only
becomes relevant after the initial yield stress is reached, before that material is linearly elastic. > Dear all, > > > I am trying to simulate a very simple compression test in abaqus/standard with axisymmetric symmetry. > > > Not the probolem I have is, the force calculation is not sensitvie to the yield curve I give. For example, I give a linearly increasing yield curve with slope of 100, and then I give a yield curve with slope of 100.1 I get the same force in the first few increments during the calculation. I tried using double precision and also fully integrated elements. > > > Could I do anything else to make abaqus sensitive for small changes in yield curve? > > > Thanks, > Aditya. > Priv.-Doz. Dr. Martin Bäker Institut für Werkstoffe Technische Universität Braunschweig Langer Kamp 8 38106 Braunschweig Germany Tel.: 00-49-531-391-3065 Fax 00-49-531-391-3058 e-mail <[hidden email]> http://www.tu-braunschweig.de/ifw/institut/mitarbeiter/baeker http://www.scienceblogs.de/hier-wohnen-drachen [Non-text portions of this message have been removed] |
Hi Mr. Baeker
Yes you are right. What I am talking is about the reaction forces after plasticity has started. For sure, in the elastic limits the forces will be the same. Thanks, Aditya. Best regards Aditya Vuppala Fax: +49 241 80-92234 [hidden email] www.ibf.rwth-aachen.de On Fri, Sep 28, 2018 at 12:51 PM Martin Baeker [hidden email] [Abaqus] <[hidden email]> wrote: > > > so you specified a different youngs modulus? The yield curve only > becomes relevant after the initial yield stress is reached, before > that material is linearly elastic. > > > Dear all, > > > > > > I am trying to simulate a very simple compression test in > abaqus/standard with axisymmetric symmetry. > > > > > > Not the probolem I have is, the force calculation is not sensitvie to > the yield curve I give. For example, I give a linearly increasing yield > curve with slope of 100, and then I give a yield curve with slope of 100.1 > I get the same force in the first few increments during the calculation. I > tried using double precision and also fully integrated elements. > > > > > > Could I do anything else to make abaqus sensitive for small changes in > yield curve? > > > > > > Thanks, > > Aditya. > > > > Priv.-Doz. Dr. Martin Bäker > Institut für Werkstoffe > Technische Universität Braunschweig > Langer Kamp 8 > 38106 Braunschweig > Germany > Tel.: 00-49-531-391-3065 > Fax 00-49-531-391-3058 > e-mail <[hidden email]> > http://www.tu-braunschweig.de/ifw/institut/mitarbeiter/baeker > http://www.scienceblogs.de/hier-wohnen-drachen > > [Non-text portions of this message have been removed] > > > |
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