[lammps-users] stress-strain curve: strange phenomenon

Hello user:

I am trying to calculate the stress-strain curves during tensile-induced crystallization. My date file containing 200 chains with chain length of 200 UA model and CNTs. Then, I run my system based on the in file, the content of which can also be seen in the following sections.

But the fluctuation of the stress-strain curve has a very strange phenomenon. As can be seen in the following picture, the stress-strain curve (The length of cnt is 36.89 and the number is 4, m=n=7) fluctuates too much. I don’t know where is the problem in the in file and how to smooth the stress strain curve. Please give me some advice.

I really appreciate your help.


stress-strain.rar (38.5 KB)