1. What is Stress in Blade?

Stress in Blade is related to mechanical loading directly and satisfies force and moment equilibrium. Primary stress that exceeds the yield stress by some margin will result in failure.

2. How Does the Calculator Work?

The calculator uses the stress in blade formula:

Where:

• \( f \) — Stress in Blade (N/mm²)
• \( Mm \) — Maximum Bending Moment (N·m)
• \( bt \) — Blade Thickness (mm)
• \( bw \) — Blade Width (mm)

Explanation: This formula calculates the bending stress in a blade based on the maximum bending moment and the blade's geometric properties.

3. Importance of Stress Calculation

Details: Accurate stress calculation is crucial for blade design and failure prevention. It helps ensure that the blade can withstand operational loads without permanent deformation or failure.

4. Using the Calculator

Tips: Enter maximum bending moment in N·m, blade thickness in mm, and blade width in mm. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is maximum bending moment?
A: Maximum Bending Moment is the algebraic sum of the moments caused by the internal forces on the shaft and it causes the shaft to rotate.

Q2: How does blade thickness affect stress?
A: Blade Thickness is generally determined by the blade width and the wider the blade, then the thicker the material that it's made from. Thicker blades typically experience lower stress levels.

Q3: What is blade width?
A: Blade Width is measured from the tooth tip to the back edge of the blade. It significantly influences the moment of inertia and thus the stress distribution.

Q4: What are acceptable stress levels?
A: Acceptable stress levels depend on the material properties. Typically, stress should be below the material's yield strength with an appropriate safety factor.

Q5: When should this calculation be used?
A: This calculation is essential during blade design and analysis phases to ensure structural integrity and prevent failure under operational loads.