tilting behavior

[Anonymous]

helo,

here I have a frame carrying asymetric load, i.e. 100kg on one side and 200kg on other side. i want to capture the tilting behavior of the frame i.e. by which angle it will tilt after aplication of such load. but i cant run the calculations without providing supports at node 1 and/or 2, wheather elastic or pinned. but after providing support i cant capture the tilting behavior. kindly help.

Cables with 255mm2 c/s area.

pinned at master link

DL1 - self weight

DL1 - mass 100kg in x, y, z at node 6

DL1 - mass 200kg in x, y, z at node 7

DL2 - body force with relative g in z= -1

Comb = dl1 + dl2

kindly help

or is there any other way to capture such tilting behavior

[Artur.Kosakowski]

Robot is not capable of running this kind of equilibrium state analysis. It requires boundary conditions which prevent free movement of a structure. 

[Anonymous]

i can understand it will not run when forces are applied but when masses are aplied and gravity is also defined then also it is not capturing the behavior? shall we consider this as drawback of robot?

[Rafacascudo · Accepted solution]

Try setting very weak springs supports for nodes 1 and 2 (or just in one of them) and you´ll get this

[Rafal.Gaweda]

See this thread also:
http://forums.autodesk.com/t5/robot-structural-analysis/lifting-the-construction/td-p/3420819/highli...

[Artur.Kosakowski]

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@Anonymous wrote:
i can understand it will not run when forces are applied but when masses areaplied and gravity is also defined then also it is not capturing the behavior? shall we consider this as drawback of robot?

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Masses are in your case forces. The same as a situation when you simulate e.g. a container left on a floor but the idea of helping hand from the ground staff when the structure is airborne from @Rafacascudo looks nice 

[Anonymous]

@Rafacascudo thx. i did so.