q 7.23 - bulkhead radial force per unit length - applied internal pressure of hull - load per unit area on inner hull including bulkhead radial force - load per unit area on outer hull including bulkhead radial force - transverse load per unit area on square clamped plate - radius of inner hull (100ml - radius of outer hull (105ml - change in radius of inner hull due to load - change in radius of outer hull due to load - inner hull thickness - outer hull thickness - bulkhead thickness elongation of bulkhead in radial direction (R2 - Rl) - radial strain in bulkheads ab - radial stress in bulkheads crmax - maximum stress due to plate bending 0 6 hoop stress in cylindrical hull section VII.4.2: General Remarks: In this section each major component of the hull structure will be examined to determine the magnitude of the loads imposed upon the component; the relation between the loading and the resulting stress level; and finally, the relation between applied stress level and component sizing. As has been discussed in Section VII.3, various alternatives were proposed in both materials selection and configuration. The conditions chosen are presented here for convenience: a. The major construction material used for purposes of this analysis is 4130 steel with a yield stress of 150,000 psi (1.03 x 109 N/m2).
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