Use this engineering calculation for a transparent preliminary estimate or independent arithmetic check when geometry, materials, loads, operating conditions, and units are defined consistently.

Sigma XPascals (Pa)

Required number input.

Sigma YPascals (Pa)

Required number input.

Tau XYPascals (Pa)

Required number input.

Plane-stress von Mises equivalent stress from σx, σy and in-plane shear stress τxy. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Equivalent Pascals (Pa)

The resulting equivalent pascals returned as a number.

• Stress, strain, section, and torsion equations assume stated geometry, loads, supports, material behavior, and small deformation. Stress concentrations, instability, fatigue, fracture, plasticity, residual stress, and code factors may govern.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Check assumptions against drawings, measurements, current material data, and the applicable design code. Apply required load combinations and safety factors, then obtain qualified review and testing for consequential designs.

• Bolt Shear Capacity

  Nominal single-shear force from bolt shear area times a user-supplied allowable shear stress; not a code-rated connection capacity.

• Fillet Weld Strength

  Idealized fillet weld force from effective throat area and a supplied allowable throat shear stress; excludes code factors.

• Shear Stress Beam

  Elastic beam shear stress τ=VQ/(Ib) at a section with supplied first and second area moments and local width.