Thickness Of Crankweb Given Bending Moment In Central Plane Of Crankweb Calculator

Formula Used:

\[ t = \frac{Mb/P - 0.75 \times lc}{0.5} \]

Bending Moment at Central Plane of Crank Web (Mb):

N·m

Force on Crankweb (P):

Length of Crank Pin (lc):

Thickness of Crank Web (t):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the Thickness of Crank Web Calculation?

The thickness of crank web calculation determines the appropriate thickness of the crank web (the portion between the crankpin and the shaft) based on bending moment, force, and crank pin length. This ensures structural integrity and proper load distribution in crankshaft assemblies.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ t = \frac{Mb/P - 0.75 \times lc}{0.5} \]

Where:

\( t \) — Thickness of Crank Web (m)
\( Mb \) — Bending Moment at Central Plane of Crank Web (N·m)
\( P \) — Force on Crankweb (N)
\( lc \) — Length of Crank Pin (m)

Explanation: The formula calculates the required thickness to withstand the bending moment while accounting for the force distribution and crank pin dimensions.

3. Importance of Crank Web Thickness Calculation

Details: Proper crank web thickness is crucial for crankshaft durability, preventing fatigue failure, and ensuring efficient power transmission from the connecting rod to the crankshaft.

4. Using the Calculator

Tips: Enter bending moment in N·m, force in N, and length in meters. All values must be positive and valid for accurate results.

5. Frequently Asked Questions (FAQ)

Q1: What is the crank web in a crankshaft?
A: The crank web is the portion of the crankshaft that connects the crankpin to the main journal, providing structural support and transferring forces.

Q2: Why is bending moment important in crank web design?
A: Bending moment determines the stress distribution in the crank web, which directly affects its thickness requirement and overall strength.

Q3: What factors influence crank web thickness?
A: Engine torque, combustion forces, material properties, and safety factors all influence the required crank web thickness.

Q4: How does crank pin length affect web thickness?
A: Longer crank pins increase the lever arm, requiring thicker webs to handle the increased bending moments.

Q5: Are there standard thickness values for crank webs?
A: Thickness varies by engine design and application, but this calculation provides an engineering basis for determining appropriate dimensions.