[Getdp] where can i find the 'names' of the Constraints and 'needed' formulae?

[ilya]

Hi! Please, delete two my old letters to you.
Here are three questions, followed one-by-one (I'm a newbie in the
programming). Please, give one answer at the end.

Q.#1: What if I want to constraint the 3D element from x and y
displacements and to let no rotations about the x and y axises? Is it
something like:

Constraint {
{Name DisplacementX ;
Case {
      { Region Surface1 ; Value 0. ; }
      { Region Surface2 ; Value 0. ; }
     }
}
{Name DisplacementY ;
Case {
      { Region Surface1 ; Value 0. ; }
      { Region Surface2 ; Value 0. ; }
     }
}
{Name RotationX ;
Case {
      { Region Surface1 ; Value 0. ; }
      { Region Surface2 ; Value 0. ; }
     }
}
{Name RotationY ;
Case {
      { Region Surface1 ; Value 0. ; }
      { Region Surface2 ; Value 0. ; }
     }
}


Q.#2: Shall I just use formulae 'inside' this program package (but i do
not know how to call its names)? Or shall I (can I) enter the formulae,
e.g. full4cut=sqrt(sigma**2 + 0.7*tau**2) - and supply the functions &
values?

Q.#3: What if I want to add formulae for e.g. dynamical hardening of
the metal - if it are not implemented yet - and then add the constraints
and perform the transient analysis - I guess all I need to do in this
case is a work about the adding formulae (as long as it can be
considered as 'additional' to this package) 'into' the program... Is it
a right "understanding" of the way the computational methods can be
implemented?

Q.#4: What if I try to create a hollow shaft - and I want to create a
new mesh in e.g. .g or .iges or any file format - so as the shape of the
inner hollow ...well, "volume" will represent the designated range of
the stress? I mean this:
http://www.naturalstuff.110mb.com/articles/MyFEAclasses-v.1.03.html