Transverse frame calculation
Can I submit you an example of calculation for a transverse frame for a sailboat with ISO 12215-5 ?
The boat had a Lwl of 9 m and a displacement of 6500 Kg, built in steel. The frame space is 0.60 m : I assume (see sketch under) that l = 2.20 m, c > 0.18 l and that the point "P" is under the waterline.
I take the minimum bottom pressure (0.35 Disp^0.33 + 1.4 Lwl = 19.13 kN/m˛. The allowable stress is : 235 * 0.8 = 188 N/mm˛. The curvature factor is 0.5 (as c > 0.18 l).
SM = ((83.33 * 0.6 * 2.2˛ * 19.13)/188) * 0.5 = 12.35 cm^3
Is my reasoning correct ?
Thank you in advance