|From:||"Khourshaei Shar, Ali" <akhoursh@...6666...>|
|Date:||Sun, 17 Dec 2017 20:25:16 +0000|
Dear LAMMPS users,
I'm trying to simulate mechanical behavior of Beta silicon nitride thin layer in z direction. To gain that, I used the attached input files and I get the attached curve as stress -strain curve. However, the curve shouldn't be correct as Si3N4 is a brittle material and based on the literature we expect it to fail within 5% of strain and a stress below 20 GPa. So, I tried several possibilities. But, I couldn't solve the issue. Therefore, I wonder if you could please help me out.
Stress - Strain.PNG
Description: Stress - Strain.PNG