dravid
Aerospace
- Mar 15, 2003
- 27
Hi,
I have devlop the program for the stiffened cylinder under buckling. Now i want to add stresses due to bending moment in it
using the relation stress: SIGMA= My/I. So that i could add it in the stresses develop in due to axial compression.
here I=Icyl+Istrnger+Iring
The question is how to calculate the y in section modulus(I/y). I know the 'Istrn and Iring' for stringer and ring (Channel) at thier centroid, does the y simply the distance between the outside edge of the flange from the centroid?
Do i need to use parallel axis method to transform 'Istrn and Iring' calculated at stiffer centroid to shift it to cylinder axis?
Really need help.
I have devlop the program for the stiffened cylinder under buckling. Now i want to add stresses due to bending moment in it
using the relation stress: SIGMA= My/I. So that i could add it in the stresses develop in due to axial compression.
here I=Icyl+Istrnger+Iring
The question is how to calculate the y in section modulus(I/y). I know the 'Istrn and Iring' for stringer and ring (Channel) at thier centroid, does the y simply the distance between the outside edge of the flange from the centroid?
Do i need to use parallel axis method to transform 'Istrn and Iring' calculated at stiffer centroid to shift it to cylinder axis?
Really need help.