Hi,
I am new in abaqus (literally just started). I am trying to model nanoindentation experiment for viscoelastic material (have to use UMAT). I should probably start going through the examples on the interactive manual, which I am doing at this moment. Problem is I need to show some progress soon (at least a 2d model working for viscoelastic nanoindentation experiment). I would like to know if someone can suggest me a way to go.
I am sorry that I am asking a general question here, but I could really use some suggestion on the overall problem as I don't have much background in this.
Thank you,
Salah
Forums
Suggestions
I am working on nanoindentation simulation (3D) on Abaqus and using UMAT. First of all, I think you should learn to write UMAT. Then implement it to your nanoindentation model. As, you are trying to show some improvements, I can suggest you to use normal elastic-plastic properties of your material and model a 2D nanoindentation simulation and show the behavior. If you have any experimental p-h curve, then compare your FEM results with the experimental one (Obviously, you should use the same loading/displacement conditions, same indenter geometry, etc).
Soud Farhan Choudhury
find closest problem in abaqus manual
Well I had same issue earlier and this advice by my colleague helped me a lot -
Find a closest problem (closest in terms of : Material properties, Contact or BCs) in the Abaqus Benchmarks manual and Example problems manual. Use "getting started" (most of which you should have gone through ealier) occasionally to get example problem understanding right.
Working on 2D UMAT while keeping at the back of your mind that 3D problem is the target may help. Also, make sure that your 2D problem UMAT would not take a lot of efforts if it is not going to be extended easily for 3D problem.