Bending Moment In Crankweb Of Centre Crankshaft Due To Tangential Thrust For Max Torque Given Stress Calculator

Formula Used:

\[ Mbt = \frac{\sigma_t \times t \times w^2}{6} \]

Bending Stress in Crankweb Due to Tangential Force (σt):

Thickness of Crank Web (t):

Width of Crank Web (w):

Bending Moment in Crankweb Due to Tangential Force (Mbt):

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1. What is Bending Moment in Crankweb Due to Tangential Force?

The bending moment in crankweb due to tangential force is the bending moment generated in the crankweb (the portion of a crank between the crankpin and the shaft) due to the tangential component of force acting on the connecting rod at the crank pin during maximum torque conditions.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ Mbt = \frac{\sigma_t \times t \times w^2}{6} \]

Where:

\( Mbt \) — Bending moment in crankweb due to tangential force (N·m)
\( \sigma_t \) — Bending stress in crankweb due to tangential force (Pa)
\( t \) — Thickness of crank web (m)
\( w \) — Width of crank web (m)

Explanation: This formula calculates the bending moment based on the bending stress and the geometric properties of the crank web.

3. Importance of Bending Moment Calculation

Details: Accurate calculation of bending moment in the crankweb is crucial for designing and analyzing crankshafts, ensuring structural integrity, and preventing mechanical failures under maximum torque conditions.

4. Using the Calculator

Tips: Enter bending stress in Pascals (Pa), thickness and width in meters (m). All values must be positive and valid for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of tangential force in crankshaft design?
A: Tangential force is the component of force that creates torque in the crankshaft, making it a critical factor in power transmission and structural design.

Q2: How does crank web geometry affect bending moment?
A: Both thickness and width of the crank web significantly influence the bending moment capacity, with width having a squared relationship in the calculation.

Q3: What are typical values for bending stress in crankwebs?
A: Bending stress values vary based on material properties and design specifications, but typically range from 50-200 MPa for steel crankshafts.

Q4: When is maximum bending moment likely to occur?
A: Maximum bending moment typically occurs during maximum torque conditions when the engine is operating at peak performance.

Q5: How does this calculation relate to overall crankshaft design?
A: This calculation is part of the comprehensive stress analysis required to ensure the crankshaft can withstand all operational loads without failure.