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
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3. Case <str<strong>on</strong>g>Study</str<strong>on</strong>g>• Step 3-2. <strong>Design</strong> Variables (3/3)‣ Stochastic modeling of vertical wave bending momentWeibull Distributi<strong>on</strong>• Lower bound = 0• h: shape parameter• q: scale parameterMWK Dyn F(x) 1[kN-m] e x q hHeadingAngle(degree)ShapePara.Full Loading C<strong>on</strong>diti<strong>on</strong>ScalePara.C ScaleShapePara.Normal Ballast C<strong>on</strong>diti<strong>on</strong>ScalePara.C Scale0 1.02534 270034 0.826 1.03677 229781 1.00030 1.03145 254465 0.891 1.04077 212142 1.00060 1.05452 231936 1.000 1.05602 173345 1.00090 1.05484 203519 1.000 1.05810 153381 1.000120 1.04259 223626 1.000 1.05848 195326 1.000150 1.02804 265590 0.846 1.05055 239661 0.993180 1.02294 282137 0.785 1.04797 256419 0.923210 1.03145 254465 0.891 1.04077 212142 1.000240 1.05452 231936 1.000 1.05602 173345 1.000270 1.05484 203519 1.000 1.05810 153381 1.000300 1.04259 223626 1.000 1.05848 195326 1.000330 1.02804 265590 0.846 1.05055 239661 0.993It is assumed <strong>the</strong> occurrence probability of each heading angle is 0.0833 (=1/12).The 6 th ASEF- 22 -
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