Bending Stress in Beams Calculator

Calculate bending stress σ = My/I = M/S where M = bending moment, y = distance from neutral axis, I = second moment of area, S = section modulus. Maximum stress at extreme fiber.

2D stress state at a point. All stresses in MPa.

σx — Normal Stress X (MPa)
σy — Normal Stress Y (MPa)
τxy — Shear Stress (MPa)
⚙ Mechanical Note: Results are based on standard textbook formulas and ISO/AASHTO references. Always verify critical designs with applicable codes (ISO 898, AASHTO 1993, AISC, Eurocode 3) and a qualified engineer.
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How It Works

Calculate bending stress σ = My/I = M/S where M = bending moment, y = distance from neutral axis, I = second moment of area, S = section modulus. Maximum stress at extreme fiber

Each component has a specific meaning:

  • Neutral axis — The neutral axis recorded for the patient or scenario being assessed.
  • I = second moment of area — The i = second moment of area recorded for the patient or scenario being assessed.
  • S = section modulus — The s = section modulus recorded for the patient or scenario being assessed.

Note: Interpret the bending stress result against the clinical thresholds and context described above.

How to Use

Enter the neutral axis, I = second moment of area, S = section modulus for the patient or scenario you are assessing. Calculate bending stress σ = My/I = M/S where M = bending moment, y = distance from neutral axis, I = second moment of area, S = section modulus. Maximum stress at extreme fiber. Use the bending stress result to inform your clinical assessment.

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Frequently Asked Questions