Question #271097 on Yade changed:
https://answers.launchpad.net/yade/+question/271097
Status: Answered => Open
Alexander is still having a problem:
Jan, thank a lot for response.
So the 3 statement is unclear for me yet:
1) how Yade knows what type of contact should be created?:
2) Does Yade create cohesive contact every time when 2 particles meet or
not?
3) If it creates cohesive contact every time, why for exmple in
CohFricMat there are functions:
- Ip2_CohFrictMat_CohFrictMat_CohFrictPhys::setCohesionNow(=false)
If true, assign cohesion to all existing contacts in current time-step. The
flag is turned false automatically, so that
assignment is done in the current timestep only.
- CohFrictPhys::initCohesion(=false)
Initialize the cohesive behaviour with current state as equilibrium state
(same as
Ip2_CohFrictMat_CohFrictMat_CohFrictPhys::setCohesionNow but acting on only
one interaction)
- setCohesionOnNewContacts(=false)
If true, assign cohesion at all new contacts. If false, only existing
contacts can be cohesive (also see
Ip2_CohFrictMat_CohFrictMat_CohFrictPhys::setCohesionNow), and new contacts
are only frictional.
So i think that in this case i decided myself when new contacts are
created and the most important thing that setCohesionNow and
initCohesion acts only one iteration. Am i right?
4) Does something like that exist in CpmMat? Because when i used CpmMat
in my program i don't set similar parameters, just "neverDamage = true"
with regards, Alexander
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