BV NR526 Plate Buckling (2026)

BV NR526 Plate Buckling (2026) standard implemented according to BV NR526 DT R05, January 2026.

To add the Standard execute Standards - Main - Other - BV NR526 Plate Buckling (2026) from the ribbon:

Plate and Stiffener Buckling Checks are calculated on Sections. With the help of Panel Finder tool, it is possible to automatically recognize Section and Plates with their dimensions.

By default, All Sections are included in the selection but it can be changed by pressing . If sections were not recognized press to run Panel Finder tool.

Press to Set Standard Custom Settings

Standard uses material data (Yield/Tensile) in calculations. Wizard checks if the values are defined for all materials.

Standard uses Safety Factors that are defined in Individual Loads and Load Sets.

Note: This standard is designed for flat plates only. Models containing curved plates will trigger a warning. Curved plate results will display 12345678, indicating that these elements were not evaluated.

Options

Structure Type - Structure type used to determine which combination of safety factors should be used for specific elements of the model.

Safety Factor for Load Carrying Structures - Ch 2, Sec 3, [2.3.2], Table 1, Safety factor for load carrying structures (crane pedestal and fixed parts of overhead cranes excluded).

Safety Factor for Crane Pedestal - Ch 2, Sec 3, [2.3.2], Safety factor for crane pedestal (see also Ch 3, Sec 3, [3.1]). 0.63 for loading cases specified in Sec 2, 0.71 when effects of wind permitted in service are taken into account.

Safety Factor for Fixed Parts of Overhead Cranes - Ch 2, Sec 3, [2.3.2], Safety factor for fixed parts of overhead cranes = 0.5.

Thickness Factor - increase thickness and reduce stresses;

Partial Safety Factor - S = 1.1 for structures exposed to local concentrated loads, S = 1.15 for specific cases, S = 1.0 for other cases;

Use Plate Edge Stress - for rectangular plates only calculations will be performed based on extracted stresses from edges of buckling plate using Plate Edge Stress Tool. For other plates calculations will be done using element converted stresses.

Use Plate Average Stress - use average element stress if OFF or averaged stress on the plate using elements area if ON;

Stress on Element - Element Stress Results to use in calculations (Maximum Compression or Average);

Include Plate Dimensions (Length, Width, Thickness) in table - includes Plate Dimensions (Length, Width, Thickness) to the table if ON and doesn't include them if OFF;

Plate Buckling Results

• Criteria Plot
• Table (Expand/Extreme)
• Flow table (over loads)

Stress Conversion

Plate Buckling check requires to verify element stresses (Sx, Sy and Txy) to be translated into the plate X, Y, XY directions.

Conversion of the stresses is done automatically in Plate Buckling check. If Use Plate Average Stress option is turned OFF (by meaning element average option is used) - the nodal element stresses at top and bottom are averaged (which is equivalent to using midplane centroid stress) and translated into plate directions.

SDC Verifier makes an assumption that the plate elements are calculated without any output transformation and the default values are used:

• For triangle elements x stress is oriented along the first ege (node1 -> node2 define 1 edge).
• For quad elements x stress is oriented along the Diagonal Bisector:

Plate Dimensions and Thickness

Results depend on the plate dimensions and direction. It is important to understand how the Panel Finder performs recognition. Length is considered to be the longest edge of the plate and width the longest perpendicular to the longest edge:

Plate dimentions can be calculated using CSR method - calculate equivalent rectangular plate dimensions described in Common Structural Rules (1 Jan 2018) Part 1, Chapter 8, Section 4 (2.3)

Calculations are performed on every element and thickness is taken directly from each element. It is possible to set thickness manually, in this case, element thickness will be ignored and user-defined thickness will be used.

Example: A Plate with 2 properties 0.01 and 0.02 thicknesses. The left picture displays the property labels with property thicknesses and the right one presents plate buckling plot of thickness parameter: