Problem of indentation with axisymmetry

[jeffho80]

Dear all,

I am doing a simulation of nanoindentation. I have setup a axisymmetry model in which a indenter press onto a specimen with displacement. I have couple nodes so that I can obtain the reaction force. However, while I compare the data with Hertzian analysis, I found that they are not agree with each other (I have multiple the reaction force from ansys with two pi to get the total reaction as it is a axisymmetry model). I really don't know what I have done wrong with it. Is there anything I have done wrong?

Hope anyone can help me out.
Thank you very much!!!

Jeff

 

[harry123456]

Hello,
Did you make sure of the units? Did you go through the verification manual (VM 63) where they have a classic hertz example. Maybe that might help?
harry

 

[jeffho80]

harry,

I have found that there is no need to mulitple the value with 2 pi as the reaction force i have got is the total one. Thank you very much for you help.

Jeff