Hi I'm interested in the effect of wall stiffness, I think I'm right in saying the LIGGGHTS using particle of infinite size to 'make' the wall, so if there of infinite size does it follow that their young's modulus will always be very high or even infinite?
As young's modulus = stress/strain
and strain = L/ Li
where Li is the initial characteristic length (the particle diameter) which in this case is infinite and thus the young's modulus must also be infinite, am I right?
tapsab | Tue, 09/18/2012 - 00:27
size and young's modulus have
size and young's modulus have no correlation. size is a geometric property while young's modulus is a measure of stiffness and its purely a material property. For a wall, its not the young's modulus that becomes infinite. Rather its the mass and the radius. Check out the documentation on the command "fix wall/gran/hooke", where this is mentioned.