Hello Steve,
I did the literature survey to find out the value of force constant. Different people have used different values. for e.g.
1.Molecular dynamics study of crystal plasticity during nanoindentation in Ni nanowires-- force constant -- 10 N/m2
2.Sample boundary effect in nanoindentation of nano and microscale surface structures-- force constant -- 10 eV/A3
Thats why I am confused as what value should be good to use.
I am sorry, I forgot to mention this in the last conversation.
Thanks and regards,
Shivraj.