fix rigid not compatible with minimization

Hi,

I am simulating rod suspensions! I assemble rods by sticking many beads to together via fix rigid command! at several times, I need to perform energy minimization, but since energy minimization is not compatible with fix rigid I can’t do that!
Would you please let me know if there are any effort to implement energy minimization in fix rigid command!? and do you have any suggestion of rme to do energy minimization in my simulation!?

Thank you

Best,
-Navid Kazem

Hi,

I am simulating rod suspensions! I assemble rods by sticking many beads to
together via fix rigid command! at several times, I need to perform energy
minimization, but since energy minimization is not compatible with fix rigid
I can’t do that!
Would you please let me know if there are any effort to implement energy
minimization in fix rigid command!? and do you have any suggestion of rme to
do energy minimization in my simulation!?

as has been stated before. minimization for extended rigid objects is
a non-trivial thing.

you can always use simulated annealing e.g. via initializing a high
temperature and then annealing with fix viscous or through a properly
programmed temperature ramp on a compatible thermostat.

axel.

if there are any effort to implement energy minimization in fix rigid command!?

no there is not - if you want to tackle it, go for it.

Steve