Forming/Compaction analysis help
Forming/Compaction analysis help
(OP)
Hi all,
I have completed this first part of a forming analysis in abaqus explicit. In the first step a powder bed of 10mm is compacted to 3mm. the assembly consists of a die wall and top/bottom punches. Can anyone suggest how I can create a second step to determine the springback distance after the top punch is removed? I tried removing the contact condition but the resulting mesh is unrealistic and severely distorted.
Any ideas are greatly appreciated.
thanks,
Chris
I have completed this first part of a forming analysis in abaqus explicit. In the first step a powder bed of 10mm is compacted to 3mm. the assembly consists of a die wall and top/bottom punches. Can anyone suggest how I can create a second step to determine the springback distance after the top punch is removed? I tried removing the contact condition but the resulting mesh is unrealistic and severely distorted.
Any ideas are greatly appreciated.
thanks,
Chris





RE: Forming/Compaction analysis help
I don't know if this applies in your case, but...
I do a lot of metal forming springback in Standard. I do the forming step in Explicit, and then *IMPORT the results into a Standard analysis with a single *STATIC step. There are no loads in the static step, just the boundary conditions needed to prevent rigid body motions.
Regards
Martin
RE: Forming/Compaction analysis help
thanks for the reply. I am using the drucker-prager cap model for the material and i have read in the documentation that the import option may not be used for this model. Do you know anything about this? I have done the import and it completes successfully in standard, but there are no results. Any ideas?
thanks,
chris
RE: Forming/Compaction analysis help
No experience of using drucker-prager I'm afraid - purely metal bashing for me
It might sound lame, but have you got output requests in the springback step? Also, I usually use *IMPORT with update=yes and state=yes (default).
Other than that, I'm a bit stuck for answers....
Regards
Martin