IQ-CAL-005REV 0NOT A CERTIFICATE
IQEG CALCULATION LAB
Combined stress on a section
IQ-CAL-005 · Rev 0 Indicative · 11/11/2026 · Not a certificate
INPUTS + RESULTSUNITS AS TABULATED
IQ Engineering Group · Sydney · IQ-CAL-005 · Combined stress on a section · millimetres, kN, kNm, MPa unless noted
Section + loads
Glossary
- σ
- Normal stress N/A + Mx y/Ixx + My x/Iyy at the fibre. MPa.
- τ
- Approximate shear 1.5 V/A. MPa. Not a web-shear flow distribution.
- σvm
- von Mises √(σ² + 3τ²).
- Fibre
- Four corners ±xmax, ±ymax. Worst is the largest σvm.
Fibres
310UB46.2 · 45.7 kg/m · I without fillets
+x +y
σ 318.2 · τ 10.3 · σvm 318.7 MPa
−x +y
σ -50.6 · τ 10.3 · σvm 53.7 MPa
+x −y
σ 67.8 · τ 10.3 · σvm 70.1 MPa
−x −y
σ -301.0 · τ 10.3 · σvm 301.5 MPa
Governing fibre
A — mm²5,816
Ixx — 10⁶ mm⁴98.1
Iyy — 10⁶ mm⁴9.0
fibre+x +y
σ — MPa318.2
τ — MPa10.3
σvm — MPa318.7