Scope & setup: DNV RP-C202 (July 2019). Curved plate from a ship FE sub-model; top corners fixed; gravity + downward face load; stresses taken from FEA.
Inputs: Geometry — 1.68 m length, 2.907 m arc, 2.3 m radius, 14 mm thickness. Material — mild steel (E 210 GPa, Poisson’s ratio 0.3, yield 355 MPa). Load to code check — lateral pressure 86 kPa.
Result & parity: Design buckling strength 112.33 MPa, utilization 0.30 (requirement satisfied). SDC Verifier matches hand calculations exactly, with clause-referenced outputs.
This benchmark validates SDC Verifier’s implementation of DNV RP-C202 for plate/shell buckling. We ran a curved-plate case from a ship FE model (FE-derived stresses + 86 kPa lateral pressure) and compared against hand calculations; results matched step-by-step, confirming correct implementation and auditor-ready, clause-referenced reporting.
Design axial stress, design circumferential stress, design shear stress and design equivalent von Mises’ stress were calculated (formulas 3.2.3–3.2.6) based on read stress values:
Results comparison between hand calculations and SDC Verifier check:
Results from SDC Verifier are the same as those obtained with hand calculations(final results and intermediate results as well).
Conclusion
We validated SDC Verifier’s implementation of DNV RP-C202 plate/shell buckling on a curved plate taken from a ship model. Using FE-extracted stresses and a lateral pressure of 86 kPa, the hand calculation route and SDC Verifier produced identical intermediate coefficients and identical design capacity: f_k_sd = 112.33 MPa, utilization = 0.30, requirement satisfied. Bottom line: the C202 check in SDC Verifier is numerically consistent with the code and ready for auditor-facing documentation (all steps mapped to §3 formulas & Table 3-2).