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 Strength of a tube. Post Reply Forum
 Posted by: 1911freak ® 03/14/2005, 15:50:30 Author Profile Mail author Edit Need some help fast. I need the formulas to calculate the strength of a tube using the O.D. and wall thickness. I need to differentiate between materials. Example: An aluminum tube (say 6061 T6) has a .750" O.D. and a .125" wall thickness. If I switched to Titanium tube with a wall thickness of .032" what O.D. would I need to achieve the same strength? I am talking about deformation due to compression (buckling) or bending (side load?).Also at what wall thickness to O.D. ratio should I begin to worry? 60-1?Any thoughts on using oval tube are also welcome. Modified by 1911freak at Mon, Mar 14, 2005, 18:44:17

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 Re: Strength of a tube. Re: Strength of a tube. -- 1911freak Post Reply Top of thread Forum
 Posted by: devitg ® 03/27/2005, 20:43:38 Author Profile Mail author Edit you wrote I am talking about deformation due to compression (buckling) or bending (side load?).Those are two so much diferent conditions . But you shall know this formulaYield strength = applied moment / resistent module Moment of inertia for a circle crown , "the pipe" Jx= pi/4 ( od^4 -id^4) and resisten module Wx= Jx/OD "the pipe outside radious" So the yield shall be smaller than the material yield It is the formula for bending , For buckling is far diferent , a far way from my known.