Torsional Moment In Crankweb Of Centre Crankshaft For Max Torque Given Reaction On Bearing2 Calculator

Formula Used:

\[ M_t = R_{h2} \times (b_2 - \frac{l_c}{2}) \]

Horizontal Force at Bearing2 by Tangential Force (R_h2):

Centre Crankshaft Bearing2 Gap from CrankPinCentre (b₂):

Length of Crank Pin (l_c):

Torsional Moment in Crankweb (M_t):

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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 is a critical parameter in crankshaft design and analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ M_t = R_{h2} \times (b_2 - \frac{l_c}{2}) \]

Where:

\( M_t \) — Torsional Moment in Crankweb (N·m)
\( R_{h2} \) — Horizontal Force at Bearing2 by Tangential Force (N)
\( b_2 \) — Centre Crankshaft Bearing2 Gap from CrankPinCentre (m)
\( l_c \) — Length of Crank Pin (m)

Explanation: This formula calculates the torsional moment based on the horizontal force at bearing 2 and the geometric parameters of the crankshaft configuration.

3. Importance of Torsional Moment Calculation

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

4. Using the Calculator

Tips: Enter all values in appropriate units. Ensure horizontal force is positive, and geometric measurements are accurate for reliable results.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of the horizontal force at bearing 2?
A: The horizontal force at bearing 2 represents the reaction force due to tangential components acting on the crankshaft, which contributes to the torsional moment.

Q2: Why subtract half the crank pin length in the formula?
A: This accounts for the moment arm calculation from the center of the bearing to the effective point of force application on the crank pin.

Q3: What are typical units for these parameters?
A: Force is typically in Newtons (N), distances in meters (m), and the resulting torsional moment in Newton-meters (N·m).

Q4: When is this calculation most critical?
A: This calculation is particularly important during maximum torque conditions when torsional stresses are highest in the crankshaft.

Q5: How does this relate to overall crankshaft design?
A: The torsional moment calculation helps determine stress distribution and is used in fatigue analysis and material selection for crankshaft components.