Hallo,
quick question:
is it possible to change properties like youngs modulus (which I defined right at the start of my simulation with a fix_property/global command) at a later stage of simulation?
I first tried it by simply unfixing the previous command and then redefining it again with fix_property/global and the new value. This procedure resulted in multiple "WARNING: Dangerous build in triangle list" and as a consequence my particles disappeared out of my simulation box.
Then I tried another approach by using the fix_adapt command to change my Youngs modulus, which led to an error message: "replacing a fix, but new style != old style".
Now I'm wondering if it is possible at all, or if I did something else wrong?
Kind regards,
Philipp
Philippe | Tue, 06/05/2012 - 16:50
set
Youngs Modulus is bound to the particle type, so you could assign a new particle type via the
set
command to the particles.
greetz
Philippe
knoe_ph | Tue, 06/12/2012 - 09:58
Hallo, i tried to assign a
Hallo,
i tried to assign a new particle type via "set group all property/peratom youngsModulus 90.e9 90.e9" like it is described in the documentary. It results in an error message: "could not identify the per-atom property you want to set".
I'm not sure if this is the correct way to assign the new particle type because originally i defined my youngsModulus to a fix_property_global command.
I guess theres a mistake in my syntax here.
Kind regards,
Philipp
moritzhoefert | Tue, 06/12/2012 - 16:27
Hi Philipp,how about
Hi Philipp,
how about defining two atom types with
create_box 2 wholeSystemRegion
and accordingly two different Y values, nus, etc
fix m1 all property/global youngsModulus peratomtype 1e6 1e6
During the simulation you can assign a different atom type to a group of atoms
set region halfbed type 2
Cheers,
Moritz
PS: I tried that with version 1.5.0 and it worked just fine.
Philippe | Wed, 06/13/2012 - 10:49
Thank you Moritz, this is
Thank you Moritz, this is exactly the way I wanted to propose.