Newbie: how to make a radial restraint
Newbie: how to make a radial restraint
(OP)
Hello!
I am starting to learn ANSYS and I'd like to ask for some help. Consider a plate with a hole (see code below).
Please, can you explain me how to create a radial restraint for the hole (that is, the plate can only rotate about the axis of the hole)?
Thank you very much!
/prep7
/title,Plate
l1 = 80.0E-3
l2 = 250.0E-3
l3 = 50.0E-3
a = 20.0E-3
b = 15.0E-3
th = 20.0E-3
ET,1,SHELL63
R,1,th,th,th,th
MP,EX,1,2.0E11
MP,PRXY,1,0.3
TYPE,1
REAL,1
MAT,1
BLC4,0,0,l1,l2
CYL4,l1/2,l3/2,5.0E-3
ASBA,1,2
FINISH
I am starting to learn ANSYS and I'd like to ask for some help. Consider a plate with a hole (see code below).
Please, can you explain me how to create a radial restraint for the hole (that is, the plate can only rotate about the axis of the hole)?
Thank you very much!
/prep7
/title,Plate
l1 = 80.0E-3
l2 = 250.0E-3
l3 = 50.0E-3
a = 20.0E-3
b = 15.0E-3
th = 20.0E-3
ET,1,SHELL63
R,1,th,th,th,th
MP,EX,1,2.0E11
MP,PRXY,1,0.3
TYPE,1
REAL,1
MAT,1
BLC4,0,0,l1,l2
CYL4,l1/2,l3/2,5.0E-3
ASBA,1,2
FINISH





RE: Newbie: how to make a radial restraint
You can determine your boundary conditions by applying your displacements on the lines of the hole.
Grtz Garry
RE: Newbie: how to make a radial restraint
If I do it, the plate won't be able to rotate.
RE: Newbie: how to make a radial restraint
RE: Newbie: how to make a radial restraint
what you said is not complete. Independent of the active coordinate system, the nodal displacements are in the nodal coordinate system. So:
1) set up a locale cylindarical coordinate at the hole center:
CODE
2) select nodes on the circle:
CODE
3) Rotate nodal coordinate sistems in the cylindrical coordinate system:
CODE
4) constrain nodes along the radial direction:
CODE
RE: Newbie: how to make a radial restraint
in your concrete case:
CODE
amesh,all
local,1000,1,l1/2,l3/2
nsel,s,loc,x,5e-3
nrotat,all
d,all,ux,0
/PBC,U,,1
nplot