FIXTURE METHOD - WHICH IS BEST?

[Robbo1971]

I have attatched to screen shots of a lifting frame I am working on...

I am struggling on how to fix it?

One screen shot shows it fixed through the lifting hole using a 'Fixed Geometry' fixture and a 'Distributed Mass' on top of the box section

the other screen shot shows it with a 'Fixed Geometry' fixture on top of the box section and a 'Bearing Load' through the hole

Which is correct? or please could you point me in the right direction if these are incorrect...

 

[Robbo1971]

screen shot two...

 

[kellnerp]

How are you assuring that the loads are in balance? If you are putting a distributed load on the box frame does the resultant pass through the hole? If you fix the box frame you may be creating a situation that is not what you are trying to model. Since there is so much deflection are you sure you don't need to consider the loads following the deformation?

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