Dear users,
I am currently undergoing a research on simulating iron powder compaction using ABAQUS. As i am new to this software, i need some guide on it. I had read through the manual but it doesnt help much. Below are my few enquiries:
1) The density required in material parameter is the initial density or the bulk density of the iron powder? If i use relative density, can i input in ABAQUS?
2) I am using Druker Prager to model my simulation. The result obtain is in Mises stress. However, my supervisor said it suppose to be in Drucker Prager values. Can anyone clarify this?
If anyone has a related article on this subject, can you share with me?
Thank you so much,
Yap
Dear Yap, 1. Density in
Dear Yap,
1. Density in ABAQUS is constant by default and is used in dynamic, transient heat transfer, and some other special types of analysis. It has no use in standard static problems and it has no relation to Drucker Prager model. And the Drucker Prager model is rather general constitutive model which accounts for hydrostatic pressure. So it can be used to model inelastic volume change which is important for powder compation. However it is not a special model for iron powder, and you have to figure out a connection between model parameters and physical properties of iron powder manually.
2. Mises stress is important characteristics of stress state regardless of model used. It is a default field output in ABAQUS but you can surely choose other from menus in result screen.
In reply to Dear Yap, 1. Density in by Alexander Polishchuk
Density in ABAQUS
Dear Alexander,
I am grateful for your feedback. However, i still has enquiries regarding the density part. You mentioned that the density is constant by default.Does it mean that ABAQUS take only the solid density?
For example: Iron has 7820kg/m3 , iron powder has 2950kg/m3
So i should input 7820?