Page 159 - Practical Design Ships and Floating Structures

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Torsion stress: bid = 0.4N/mmA2 ; Bending Stress: 0 = 8O.fdN/mmA2
103.96N/mmA20n thecrossdeckbottom;
Shear Stress: r =
14 1 .I 9 Nlmm”2 on the neatral axis.
The Von-Mises stress for the bending- shear stress is given by:
197.29N / mm”2 on the cross deck bottom
bid =
244.56N / mm”2 on the neutral axis.
The existence of the last stress implies the utilization of high stress steel.

Acknowledgements
The paper has been financially supported by MURST 60% and 40% founds.
A particular acknowledgement has to be given to the Naval officers P. Dafieno and A. Bignone for the
utilization of data and plans of their graduation thesis.
References

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trimaran0 - Tutors: M. Mandarin0 and T.Coppola. Graduation Thesis.
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