Learning Forum

[javat33489]

Hello everyone.
I need help please.
I am doing a calculation in LS-Dyna Workbench.
I use a force to compress an object with another object. When the force ends, I need to fix the pressing object in the position where the force ended. How to do this?

For example, in static analysis, I would use the APDL parameter, this is the "D" parameter with the choice of the fixation axis. Is there something similar in LS-Dyna?
Thank you.

[Dennis Chen]

 

you can try using a boundary SPC and set birth and death time in the keycard.   I am not sure this can be done inside workbench by clicking buttons, you will need to write your own boundary_SPC key card and create sets there (named selection converts to sets).   

In addition, I offer this suggestion sincerely:  do not try to learn LS-Dyna by doing it inside workbench.   Instead, learn LS-Dyna by understanding the input file, every single one of the keycards

I know this sounds insane perhaps, but it is truly what I believe we should do.   I wish I learned ANsys Mechanical by studying every lines of APDL code but Ansys mechanical was very mature already even 10 years ago so I didn’t feel like I needed to.   This hurts me now even when I feel like I am profiicent, I am not as proficient as I could have been if I learned things the better way.

Hope this helps.