Hi, many thanks to those of you who donated indent examples earlier in the year. I want to calculate the value of the yield stress of a lammps material. I'm open to more than one method, but particularly focused on using an indentation right the moment.
I have the indenter coming in along one axis. I output the component of the force on the f_indent. What is this force? The documentation helpfully explains that it is extensive, that is, it varies with the number of atoms in the simulation. What does this actually mean?
I just want to calculate the force at yield, and thus be able to calculate the yield stress by combining it with the area, does this mean I have to divide this force by the number of atoms in the simulation? This of course is not very useful, as not all atoms have to be involved in the stress field and it is not clearly defined how many atoms are.
Any help and advice gratefully received.