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The Torsional Moment at Crankshaft Under Flywheel is the torsional moment induced at the central plane of the crankshaft below the flywheel when an external twisting force is applied to the crankshaft. This is a critical parameter in engine design and analysis.
The calculator uses the formula:
Where:
Explanation: The torsional moment is calculated by multiplying the tangential force at the crank pin by the perpendicular distance between the crank pin and the crankshaft.
Details: Accurate calculation of torsional moment is crucial for crankshaft design, stress analysis, and ensuring the structural integrity of engine components under maximum torque conditions.
Tips: Enter the tangential force at crank pin in Newtons (N) and the distance between crank pin and crankshaft in meters (m). Both values must be positive numbers.
Q1: Why is torsional moment important in crankshaft design?
A: Torsional moment helps determine the stress distribution and ensures the crankshaft can withstand the twisting forces experienced during engine operation.
Q2: What factors affect the tangential force at crank pin?
A: Engine load, combustion pressure, connecting rod geometry, and engine speed are primary factors affecting tangential force.
Q3: How does distance between crank pin and crankshaft affect torsional moment?
A: The torsional moment increases proportionally with the distance, making this a critical dimension in crankshaft design.
Q4: When is maximum torsional moment typically experienced?
A: Maximum torsional moment usually occurs at maximum torque conditions, which is a critical design consideration.
Q5: Are there limitations to this calculation?
A: This formula provides a simplified calculation and may not account for dynamic effects, material properties, or complex loading conditions in actual engine operation.