Question #175394 on Yade changed: https://answers.launchpad.net/yade/+question/175394
Chiara Modenese proposed the following answer: On 29 November 2011 09:25, Christian Jakob < [email protected]> wrote: > Question #175394 on Yade changed: > https://answers.launchpad.net/yade/+question/175394 > > Christian Jakob posted a new comment: > It is not double-checked, but quad-checked (maybe even more). > Did you check the computation of the time step in PFC in case of viscous damping and Hertzian law? This has to be quad-checked. In Yade there is no such a computation of time step that considers viscous damping at the contact (AFAIK). C. > > YADE input file: > > #GENERAL SETTINGS: > initial_porosity = 0.4 > shear_modulus = 3e7 > poisson_ratio = 0.3 > young_modulus = 2*shear_modulus*(1+poisson_ratio) > friction_coeff = 2 > angle = math.atan(friction_coeff) > rho_p = 2650 #density of particles > > #SET DAMPING CONSTANTS: > local_damping = 0.01 > viscous_normal = 0.021 > viscous_shear = 0.8*viscous_normal > > PFC input file: > > ;GENERAL SETTINGS: > initial_porosity = 0.4 > shear_modulus = 3e7 > poisson_ratio = 0.3 > friction_coeff = 2 > rho_p = 2650 ;density of particles > > ;SET DAMPING CONSTANTS: > local_damping = 0.01 > viscous_normal = 0.021 > viscous_shear = 0.8*viscous_normal > > The only thing I could imagine, that is wrong, is > > young_modulus = 2*shear_modulus*(1+poisson_ratio) > > but wikipedia tells me this is ok... > > -- > You received this question notification because you are a member of > yade-users, which is an answer contact for Yade. > > _______________________________________________ > Mailing list: https://launchpad.net/~yade-users > Post to : [email protected] > Unsubscribe : https://launchpad.net/~yade-users > More help : https://help.launchpad.net/ListHelp > -- You received this question notification because you are a member of yade-users, which is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
