BCs for a stool
BCs for a stool
(OP)
I have to analyze an assembly very similar to a stool (4 legs welded to a flat plate) and was wondering what is the best way to apply restraints without using symmetry. The legs can spread out but cannot move vertically. I can restrain UZ but what about UX & UY? I'm using 2nd order tets for meshing. Any ideas??





RE: BCs for a stool
Follow this, and the stool legs are free to spread outwards under vertical load without any restriction.
RE: BCs for a stool
Alternatively you could calculate the reactions at the base of the legs, apply these as pressures, and apply the fixity elsewhere (at the flat plate?).
RE: BCs for a stool
RE: BCs for a stool
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: BCs for a stool
I'm not sure I understand your post fully.......would you elaborate on it a bit more?
RE: BCs for a stool
Wha is the load taken by each leg?
Cheers
Greg Locock
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.
RE: BCs for a stool
Why not use four beams and a plate, something tells me that might remove some of the confusion.
Good Luck
Thomas