1. What is Torsional Moment in Crankweb?

Torsional Moment in Crankweb is the torsional reaction induced in the crankweb when an external twisting force is applied to the crankweb causing it to twist. It's a critical parameter in crankshaft design and analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( M_t \) — Torsional Moment in Crankweb (N·m)
• \( T \) — Shear Stress in Crankweb (Pa)
• \( w \) — Width of Crank Web (m)
• \( t \) — Thickness of Crank Web (m)

Explanation: This formula calculates the torsional moment based on the shear stress and geometric properties of the crankweb.

3. Importance of Torsional Moment Calculation

Details: Accurate calculation of torsional moment is crucial for crankshaft design, ensuring structural integrity and preventing failure under maximum torque conditions.

4. Using the Calculator

Tips: Enter shear stress in Pascals, width and thickness in meters. All values must be positive and valid for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of the 4.5 factor in the formula?
A: The 4.5 factor is derived from empirical data and theoretical analysis specific to crankweb geometry and material properties.

Q2: How does shear stress affect torsional moment?
A: Higher shear stress values result in higher torsional moments, indicating greater twisting forces acting on the crankweb.

Q3: What are typical values for crankweb dimensions?
A: Crankweb dimensions vary by engine size and application, but typically range from 20-100mm in width and 10-50mm in thickness.

Q4: When is this calculation most critical?
A: This calculation is most critical during maximum torque conditions when the crankshaft experiences the highest torsional loads.

Q5: Are there limitations to this formula?
A: This formula provides an approximation and may need adjustment for specific material properties, complex geometries, or extreme operating conditions.