Learning Forum

[jc47948]

Hello, I've been struggling for days trying to get the deformation to stay put (minus the elastic springback). Can I do this without a whole Multilinear isotropic hardening tabular data input in engineering settings? Or do I have no choice but to do that? I tried that and it solves for many hours then fails.

Any help would be greatly appriciated, as I can't seem to get this to work! (I'm an ANSYS noob)

 

Start^

Pressed^

 

Goes back no deformation^

 

Displacement setting^

 

[peteroznewman]

The simplest plasticity material model is the Bilinear-Kinematic. All you need to define is a Yield Strength.  Use 0 for the Tangent Modulus. This will create an Elastic, Perfectly-Plastic material.

You should remesh the flat plate and put at least 4 elements through the thickness. If you make the elements Linear, you should put 8 elements through the thickness.  This will help it stay bent.

You should use a 2D Plane Strain analysis to save on the solution time.  You could also save some time by taking advantage of symmetry.

You don't need 21 steps, you can do it with 2 steps, but you will need to increase the number of substeps to 100 Initial, 100 Minimum and 1000 Maximum.

[jc47948]

Peter, thank you so much for your help!!! I'm really starting to dig ANSYS mechanical, but have a lot to learn obviously. This is the second time you've helped me out and it is much appriciated.