hermeneutics
Aerospace
- Oct 7, 2014
- 3
Hey everyone,
I am modeling an isotropic material with an elastic-plastic behavior. I am applying a prescribed displacement. I want to soften the material but the *STATIC analysis never converges. I tried *Static, Riks but it never reaches the prescribed displacement. As soon as the material reaches the yield point, the displacement starts to decrease and I never get to see the softening. I've tried "automatic stabilization" with the *Static procedure but I couldn't get it to run past yield. I also tried breaking it into several steps with a small displacement increment but it still failed. The error is always the same, "time increment required is less than the minimum specified" even though my time increment is currently 1E-10.
Any advice is appreciated,
Thanks!
I am modeling an isotropic material with an elastic-plastic behavior. I am applying a prescribed displacement. I want to soften the material but the *STATIC analysis never converges. I tried *Static, Riks but it never reaches the prescribed displacement. As soon as the material reaches the yield point, the displacement starts to decrease and I never get to see the softening. I've tried "automatic stabilization" with the *Static procedure but I couldn't get it to run past yield. I also tried breaking it into several steps with a small displacement increment but it still failed. The error is always the same, "time increment required is less than the minimum specified" even though my time increment is currently 1E-10.
Any advice is appreciated,
Thanks!