Stability of a stand

[Anonymous]

A cylindrical component is loaded equally (Total load=1300 lbs.) at two points on top as shown in the attached image. The stands are made of steel and can withstand the loads as determined from the FEA.

My question- Is there a way to determine the stability of the stands when the cylinder component is loaded? I would like to know if the stands stay static when loaded or  in other words  would they "tip" or 'move backwards' depending on the width of the base. 

Little more details about the assembly: Sub-assembly 1 is inserted into sub-assly 2 and are bolted using a pin. 

Any info is welcome. Thanks

 

kelly.young has embedded your images for clarity.

[JDMather]

Environments>Dynamic Simulation

[swalton]

I'd do some hand free-body-diagrams to solve for the tipping moment about all the edges of the base.  If the resultant moment (sum of the load moment and the weldment's CG moment) tends to rotate the base into the ground, you should be ok.  If it tends to lift the base from the ground, you may have an issue. The smaller the resultant, the less stable your structure will be.

You will have to use your engineering judgement to decide if the gap between the tubular sections will allow enough displacement in the load point to affect the system.

Don't forget a buckling analysis of the columns.