I am using LAMMPS (25 Feb 2016) and have some questions about fix indent command (note: I am a beginner). I am performing an indentation simulation into Cu with the included EAM potential. I move the indenter, minimize and repeat:
- In some papers, there is always the load vs displacement curves during nanoindentation. In the manual it says that “This fix computes a global scalar energy and a global 3- vector of forces (on the indenter), which can be accessed by various output commands.” As far as I have understood, the scalar load (F) in the graph is simply the negative of the sum of atom forces obtained by f_ID command. Am I right?
However, I am not sure whatever I am doing is correct or not.
- Also, what exactly are force max component initial and force two-norm initial obtained in the log file?
The input file is attached.
AS_nanoindentation_5_.1.txt (1.72 KB)