Bending Moment In Crankweb Of Centre Crankshaft Due To Radial Thrust For Maximum Torque Calculator

Formula Used:

\[ M_{br} = R_{v2} \times (b_2 - \frac{l_c}{2} - \frac{t}{2}) \]

Vertical Reaction at Bearing 2 Due to Radial Force (R_v2):

Centre Crankshaft Bearing2 Gap from CrankPinCentre (b₂):

Length of Crank Pin (l_c):

Thickness of Crank Web (t):

Bending Moment in Crankweb Due to Radial Force (M_br):

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

The bending moment in crankweb due to radial force is the internal moment generated in the crankweb when subjected to radial thrust forces during maximum torque conditions. This calculation is crucial for determining the structural integrity and stress distribution in crankshaft components.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ M_{br} = R_{v2} \times (b_2 - \frac{l_c}{2} - \frac{t}{2}) \]

Where:

\( M_{br} \) — Bending Moment in Crankweb Due to Radial Force (N·m)
\( R_{v2} \) — Vertical Reaction at Bearing 2 Due to Radial Force (N)
\( b_2 \) — Centre Crankshaft Bearing2 Gap from CrankPinCentre (m)
\( l_c \) — Length of Crank Pin (m)
\( t \) — Thickness of Crank Web (m)

Explanation: The formula calculates the bending moment by considering the force distribution and geometric parameters of the crankshaft assembly.

3. Importance of Bending Moment Calculation

Details: Accurate calculation of bending moments is essential for crankshaft design, fatigue analysis, and ensuring structural reliability under maximum torque conditions. It helps prevent mechanical failures and optimizes component dimensions.

4. Using the Calculator

Tips: Enter all values in appropriate units (Newtons for force, meters for distances). Ensure all input values are positive and within reasonable engineering ranges for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: Why is this bending moment calculation important?
A: It helps engineers design crankshafts that can withstand the maximum radial thrust forces without failure, ensuring engine reliability and longevity.

Q2: What factors affect the bending moment in crankweb?
A: The vertical reaction force, bearing positions, crankpin length, and crank web thickness are the primary factors influencing the bending moment.

Q3: When is maximum torque condition considered?
A: Maximum torque conditions occur during peak engine performance, typically at specific RPM ranges where the engine produces its highest torque output.

Q4: Are there limitations to this calculation?
A: This calculation assumes linear elastic behavior and may need additional considerations for dynamic loading, temperature effects, and material nonlinearities.

Q5: How is this used in crankshaft design?
A: Engineers use this calculation to determine appropriate dimensions, select materials, and verify that stress levels remain within safe limits under maximum operating conditions.