Learning Forum

[Vincent Doan]

Hi,

Currently I'm using structural steel for the die and punch, stainless steel NL for the plate. But why in my V-bending process, the bending behavior of the plate is like a cloth sliding down the die rather than a steel plate being bent at the center. Can someone help me with this?

I'm looking forward to your suggestion. Thank you

Vincent

[Armin]

Hi Vincent,

I have a few suggestions for your v-bending model. You can find more information about good practices in Explicit Dynamics simulation here: Explicit Dynamics Theory - Ansys Innovation Course - YouTube

• Try using a velocity-based boundary condition rather than displacement-based boundary condition for loading your sample.
• Use more than one element through-thickness of the plate. This is particularly important here since you have bending effects where the bottom layers experience compression and top layers experience tension.
• Assume that the tooling (die and punch) behaves like a rigid material.
• The "stainless steel NL" is a simplified material model. If you have more information about plastic deformation of your material like its stress-strain or hardening curve, you can create your own specific material.

[Vincent Doan]

Hi Armin,

Because I just started to explore Ansys recently, I hope you can give me a more detailed explanation on the following suggestion:

• Use more than one element through-thickness of the plate. This is particularly important here since you have bending effects where the bottom layers experience compression and top layers experience tension.

Thank you.

 

[Erik Kostson]

Hi

See this for a discussion on that:

/forum/forums/topic/shell-vs-solid-elements/

 

Also search the internet for some more info on this question:

Search

All the best

Erik

[Erik Kostson]

Hi On another topic - this (v bending) can possibly be done with a static system . See here for a tutorial: https://grabcad.com/library/bending-of-an-aluminium-sheet-with-spring-back-effect-video-1 All the best Erik

[Vincent Doan]

Hi,
The link that you gave me, I cant seem to open the .wbjp file. Cuz it said the file directory does not exist. How can i solve this?
Thank you