Hull Girder - First Yield Moment
First-yield bending moment of hull girder - minimum bending moment at which any fibre reaches yield, precursor to ultimate-strength M_u.
First-yield moment
5,670,000kN·m
Formula, assumptions, and limits
Ultimate moment M_u typically 1.1–1.3 × M_Y due to post-yield plate / stiffener interaction. IACS UR S11A for ultimate strength of bulk carriers: M_u / M_SW+W ≥ 1.2 min.
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| Section modulus at fibre of interest | m³ | midship scantling | |
| Material yield stress | N/mm² | steel grade |