Deflection of a tube beam where hollow is off-center

[rkmore]

So I am trying to figure out how I can calculate the deflection and ultimate bending moment capacity of a hollow tube beam when the hollow portion is not concentric. A regular concentric tube is easy enough but this has me out of my depth.

I assume that it will no longer be symetric in its reaction and capacity but I am not really sure.

Any tips, links, or general thoughts to get me started in the right direction would be greatly appreciated.

Thanks...

RKM

 

[haruspex]

Is the axis of the bending moment in the same plane as the the two cylindrical axes?

 

[rkmore]

Hmmm.. I want to say "no" but I can also see that complicates the problem considerably, the axis of deflection is (I think) no longer in the direction of the load :-(

Let's say "yes" for now and then if my brain doesn't explode trying to wrap itself around that problem I will try to tack the more complex case later.

RKM