Re: [Tochnog-users] Tochnog with GID

[antonio r. <an...@in...>]

01:56, luned=EC 30 aprile 2001, you wrote:
> Hello All,
>
> I started to work with tochnog one month ago.
> I didn=B4t get to work with tochonog and GID together.
> Could you tell me some tips??
> I=B4d like to know how I can put boudary conditions like
> forces and displacements.
>
> Thanks,
> Leonardo

I had many problems to fix boundary conditions with gid: I=20
prefer draw geometry with gid, then with a normal editor=20
fix boundary conditions with :
bounda force
force_element_edge
bounda unknown

...But I'm a beginner yet.

Here something:
force with gid:

=46rom menu choose
Data>Conditions

-Button with node, lines... switch to Force over nodes,=20
over edge over surface;
-From conditions menu choose
material velocity force

set time and value;
set velx vely velz for force direction;

I have some doubts here because gid set forces over nodes=20
which are contained in geometry that you choose with lines=20
like these:

bounda_force      1      1 -velx
-vely
-velz
bounda_time      1=20
bounda_force      2      3 -velx
-vely
-velz
....

But if you want distributed forces you should use

force_element_edge

I found also a problem:
GID write lines
bounda_force      1      1 -velx
-vely
-velz
bounda_time      1=20

Should be
bounda_force      1      1 -velx
-vely
-velz
bounda_time      1  time you set

I prefer to use normal editor

--=20
( 0>  Antonio Riccucci
/ /\   http://spazioweb.inwind.it/gaialives
V_/_ use linux at your own gain