4. Study on the Risk-Based Methodology for Ship Structural Design
4. Study on the Risk-Based Methodology for Ship Structural Design
4. Study on the Risk-Based Methodology for Ship Structural Design
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
2. Safety Level of LSM• Formulati<strong>on</strong> of Limit State Equati<strong>on</strong>Z R L WorkingLMTWorking2sP P M C M WKStatWKDynfbendzWKStatWKDynHGvert• Failure mode c<strong>on</strong>cerned Yielding failure of local stiffener, due to local bending• Load type c<strong>on</strong>cerned Local loads: lateral pressure from external sea and internal ballast/cargo Global loads: vertical wave bending moment• Resistance factor (R) = yield stress capacity of <strong>the</strong> material used• Load factor (L) = working stress <strong>on</strong> <strong>the</strong> stiffener c<strong>on</strong>sidered• Background Beam <strong>the</strong>ory (both ends fixed) Scantling <strong>for</strong>mulas in IACS CSR <strong>for</strong> double hull oil tanker Net scantling approachstiffScale0.001dIvertThe 6 th ASEF- 10 -