I have recently started using lammps and am trying to simulate granular poiseuille flow using the LIGGGHTS. Now I want to use gran/hooke as pair_style but it showed me the following error on compilation "Illegal fix property/global command, not enough arguments (fix_property_global.cpp:50)", though I have used all the fixes for the gran/hooke pairt_style. including the coefficient of restitution, young's modulus, poisson's Ratio ,characteristic velocity and coefficient of friction.
Moreover I am not able to figure out how to fix the values of kn, kt gamma for gran/hoooke model. Its not there in the manual as well as on the forums.
ckloss | Thu, 10/30/2014 - 15:05
>>Moreover I am not able to
>>Moreover I am not able to figure out how to fix the values of kn, kt gamma for gran/hoooke model. Its not there in the manual as well as on the forums.
Concrete values for your simulation problem can of course not be found in the manual.
Also please do not confuse hooke and hooke/stiffness. I'd advise you to read the (LIGGGHTS!!, not LAMMPS) manual once again
Best wishes
Christoph