Finding center of gravity
Finding center of gravity
(OP)
I have a 3D model in Autocad Mechanical 6.0 and I need to find the center of gravity. It is an assembly drawing, meaning different solids used in one drawing that I created. If I unioned all the parts to make one solid, could I find by using the mass properties? Is the centroid the same as the center of gravity? I have other seats in CAD software, if someone knows a to figure it. The seats include: Mechanical Desktop 5.0, Autocad 2002, Solid Works 2001+, Solid Edge, TurboCad 9.0 Pro and CoCreate's One Space Designer 11.0 and 11.6
Any help would be nice. Thanks.
Any help would be nice. Thanks.





RE: Finding center of gravity
I probably shouldn't be answering this 'cause I only know Solidworks (of the ones you've listed), but I can't believe that AutoCAD mechanical, or any of the others, can't do this.
We recently had a long rambling discussion on a thread about centroid v center of gravity, but it got wiped out, I think because it was homework related. But for all intents and purposes, for a homogeneous solid, geometrical centroid = mass centroid = center of mass = center of gravity. For a non homogeneous solid, mass centroid = center of mass = center of gravity
RE: Finding center of gravity
Mechanical does do it, but I was trying to verify I had the concept correct. I also wanted to use the other programs I have to verify and validate each others solution.
RE: Finding center of gravity
RE: Finding center of gravity
if i undestand your question her is a simple way to do it!!
export your geometry file to Ansys or better to LSDYNA3D it will do it for you if it is an AutoCad file it should be exportable..., in general the center of gravity it is not coincident with the centroid it is only the case for regular shapes a ball for examle.
Hanibal
RE: Finding center of gravity
RE: Finding center of gravity
RE: Finding center of gravity
RE: Finding center of gravity
RE: Finding center of gravity
you are right, do read my words carefully, IN GENERAL....
if i had the time i can prove that....
thanks
Hanibal
RE: Finding center of gravity