Calculator

Honeycomb Sandwich Beam

Stiffness, deflection and the four checks that size a sandwich panel: facing strength, core shear, facing wrinkling and intracell buckling. Deflection includes the core's shear, which a solid-beam formula misses.

New to sandwich panels? How they work and the four ways they fail.

Facings (each)

Modulus E_f(GPa)Thickness t_f(mm)Allowable stress(MPa)Density(g/cm³)

Composite facings: use the laminate's in-plane modulus from the laminate calculator.

Core

Shear modulus G_c (span direction)(MPa)Compressive modulus E_c(MPa)Thickness t_c(mm)Shear strength (span direction)(MPa)Cell size(mm)Density(kg/m³)

Beam

Span L(mm)Width b(mm)Load P(N)

Loaded: Hexcel's worked example — compare with its published D = 5869.6 N·m², facing stress 115.8 MPa and deflection ≈ 43 mm.