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Lug / Padeye Analysis

A loaded lug can fail three ways: bearing crushing at the pin, net-section tension across the reduced width, or shear-out tearing to the free edge. All three must pass.

Applied load P (N)

Hole diameter (mm)

Thickness (mm)

Width across lug (mm)

Hole centre to edge (mm)

Bearing allowable (MPa)

Tensile allowable (MPa)

Shear allowable (MPa)

Bearing

—

Net tension

—

Shear-out

—

Critical mode

—

Minimum MS

—

Simple net-section checks. A real lug analysis applies Kt curves for the hole and checks the pin in bending — see the MMPDS / Bruhn lug method.

A helper, not a substitute for engineering judgment. Verify against the governing standard.