Hi, all
Are there any commands in LIGGGHTS that is similar to the "local damping" in PFC?
I want to use this command because the simulation is a quasi-static problem. By adopting local damping, the simulation could be greatly sped up without losing accuracy.
Many thanks,
Liu
JoshuaP | Wed, 02/11/2015 - 10:12
hey,
hey,
look for fix viscous. Is that what you are searching for? Also for quasi_static problems if you just wanna look at the final steady state, you could use density scaling (Particulate Discrete Element Modelling, by C. O'sullivan).
Regards,
Joshua
billsouls | Thu, 02/12/2015 - 04:15
No. fix viscous is used to
No. fix viscous is used to add a force proportional to the velocity, while local damping applies a damping force with magnitude proportional to unbalanced force.
I will read the book you recommended carefully.
Many thanks,
Su
ckloss | Mon, 02/16/2015 - 12:47
Hi,
Hi,
not sure what "local damping" in PFC refers to exactly. But I'm pretty condifent if it can be written as a mathematical equation, it can easily be implemented in LIGGGHTS
Cheers
Christoph