DNV RP-C201 Plate/Stiffener/Girder Buckling (2023)

The DNV RP-C201 Plate/Stiffener/Girder Buckling (2023) implementation in SDC Verifier verifies the buckling strength of plates, stiffeners, and girders in plated structures according to DNV Recommended Practice – Buckling strength of plated structures, September 2023. It works directly on recognized sections and plates inside the FEA workflow, combining Panel Finder, Effective Plate Width, material data, and section-based calculations to evaluate member stability under compression, shear, lateral pressure, and combined loading. 

What this implementation checks 

• Plate buckling under longitudinal compression, transverse compression, shear, biaxial loading, and laterally loaded plate conditions 
• Stiffener buckling using effective plate width, equivalent axial force, equivalent lateral line load, shear resistance, torsional effects, and beam-column checks 
• Girder buckling using effective plate width, equivalent loads, shear resistance, torsional effects, and beam-column verification 
• Local buckling of stiffener and girder flanges and webs 
• Load group envelopes to identify the governing buckling result across grouped load items 

How it works in SDC Verifier 

Using Panel Finder, SDC Verifier automatically recognizes plates, sections, panel dimensions, member spacing, and relevant lengths required for the standard. Plate checks use element-based or plate-averaged stresses converted into plate directions, while stiffener and girder checks use recognized section data together with Effective Plate Width results and material properties already defined in the model.