Bolt Stretch from Preload Calculator

Calculate bolt elongation from applied preload using elastic theory. Used for direct tension indicating (DTI) methods and torque angle control strategies.

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 bolt elongation from applied preload using elastic theory. Used for direct tension indicating (DTI) methods and torque angle control strategies

Each component has a specific meaning:

  • Applied preload — The applied preload recorded for the patient or scenario being assessed.

Note: Interpret the bolt stretch result against the clinical thresholds and context described above.

How to Use

Enter the applied preload for the patient or scenario you are assessing. Calculate bolt elongation from applied preload using elastic theory. Used for direct tension indicating (DTI) methods and torque angle control strategies. Use the bolt stretch result to inform your clinical assessment.

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Frequently Asked Questions