Stress in thick walled cylinders

[bluffreggie]

Hi guys,

I found some experimental data on a website the other day and i have been trying to do some calculations.

Im getting suck up on the rearrangement(never been my strong point) and its driving me bonkers!

Any help at all would be appricated.

need to have er as the subject.

sigma r = (E/1-v^2)*(er-veh)

Ive had a go and all I am getting is;

er = sigma r * (1-v^2)+veh all over E

can anyone confirm?

Thanks

 

[lazypast]

if you let (E/1-v^2) = Q then what would happen when you move Q to the other side? the 2nd bracket (er-veh) can now be opened.

 

[bluffreggie]

Right ok then, i have sigma r /Q = er - veh,
then I have

(sigma r/Q)+veh=er

does this look better?