Total Compressive Stress In Central Plane Of Crankweb Of Side Crankshaft At TDC Position Calculator

Formula Used:

\[ \sigma_c = \frac{P}{w \times t} + \sigma_b \]

Force on Crankweb (P):

Width of Crank Web (w):

Thickness of Crank Web (t):

Bending Stress in Crankweb (σb):

Total Compressive Stress (σc):

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1. What is Total Compressive Stress in Crank Web Central Plane?

Total compressive stress in crank web central plane is the magnitude of force applied onto the crank web, divided by cross-sectional area of crank web in a direction perpendicular to the applied force, plus the bending stress component.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \sigma_c = \frac{P}{w \times t} + \sigma_b \]

Where:

\( \sigma_c \) — Total compressive stress in crank web central plane (Pa)
\( P \) — Force on crankweb (N)
\( w \) — Width of crank web (m)
\( t \) — Thickness of crank web (m)
\( \sigma_b \) — Bending stress in crankweb (Pa)

Explanation: The formula calculates the combined effect of direct compressive stress and bending stress in the crank web at the top dead center position.

3. Importance of Compressive Stress Calculation

Details: Accurate compressive stress calculation is crucial for designing and analyzing crankshafts, ensuring structural integrity, and preventing mechanical failures in internal combustion engines.

4. Using the Calculator

Tips: Enter force in newtons, dimensions in meters, and bending stress in pascals. All values must be positive and valid.

5. Frequently Asked Questions (FAQ)

Q1: Why is compressive stress important in crank web design?
A: Compressive stress analysis ensures the crank web can withstand the combined loading conditions without failure during engine operation.

Q2: What are typical values for crank web dimensions?
A: Dimensions vary by engine size and application, but typically range from 20-100mm for width and 10-50mm for thickness in automotive engines.

Q3: When is this calculation most critical?
A: This calculation is most critical at top dead center position where combustion forces are maximum and stress concentrations are highest.

Q4: What safety factors are typically used?
A: Safety factors typically range from 2.0 to 4.0 depending on the application, material properties, and operating conditions.

Q5: How does material selection affect the results?
A: Material properties (yield strength, ultimate strength) determine the allowable stress limits and influence the design dimensions and safety factors.