Simulation of powder compaction
Simulation of powder compaction
(OP)
Hi, I am relatively new to Abaqus and have some problems regarding boundary conditions and steps in a powder compaction simulation I am trying to do.
My calculations constantly crash due to errors with the boundary conditions.
In principle I have 4 parts: the powder, a punch, a die around the powder and a bottom piece under the powder.
I would like to simulate the punch moving down and compressing the powder, but I am not sure how to define the steps and BC's to ensure the correct contact between all the surfaces.
I would appreciate any help.
Thanks
My calculations constantly crash due to errors with the boundary conditions.
In principle I have 4 parts: the powder, a punch, a die around the powder and a bottom piece under the powder.
I would like to simulate the punch moving down and compressing the powder, but I am not sure how to define the steps and BC's to ensure the correct contact between all the surfaces.
I would appreciate any help.
Thanks





RE: Simulation of powder compaction
RE: Simulation of powder compaction
Jlog50,
Quick question about your response as it may be something I've been looking for. When you switch from displacement to force control, do you mean catching the current loading on the plate and ramping it from there? How would you know what magnitude to start the force application at?
RE: Simulation of powder compaction
I deal with problems of components in contact and in order to establish equilbrium I very often need to apply a small displacement even if its a few microns (say in step 1), then I add my load (say in step 2). My force application is just what I my load is. I just need to make sure that my displacement does not does not exceed my deformation in step 2. After speaking with a techi at Simulia about this, he mentioned that its standard practice in contact mechanics simulations. I hope the makes sense.
RE: Simulation of powder compaction