Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment Solution

STEP 0: Pre-Calculation Summary
Formula Used
Bending Stress in Crankweb = (Bending Moment at Central Plane of Crank Web*6)/(Width of Crank Web*Thickness of Crank Web^2)
σw = (Mb*6)/(w*t^2)
This formula uses 4 Variables
Variables Used
Bending Stress in Crankweb - (Measured in Pascal) - Bending Stress in Crankweb is the bending stress in the crank web due to the bending moment acting onto the crank web.
Bending Moment at Central Plane of Crank Web - (Measured in Newton Meter) - Bending Moment at Central Plane of Crank Web is the reaction induced in the central plane of the crank web when an external force or moment is applied to the crank web causing it to bend.
Width of Crank Web - (Measured in Meter) - Width of Crank Web is defined as the width of the crank web (the portion of a crank between the crankpin and the shaft) measured perpendicular to the crankpin longitudinal axis.
Thickness of Crank Web - (Measured in Meter) - Thickness of Crank Web is defined as the thickness of the crank web (the portion of a crank between the crankpin and the shaft) measured parallel to the crankpin longitudinal axis.
STEP 1: Convert Input(s) to Base Unit
Bending Moment at Central Plane of Crank Web: 520 Newton Meter --> 520 Newton Meter No Conversion Required
Width of Crank Web: 65 Millimeter --> 0.065 Meter (Check conversion ​here)
Thickness of Crank Web: 40 Millimeter --> 0.04 Meter (Check conversion ​here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
σw = (Mb*6)/(w*t^2) --> (520*6)/(0.065*0.04^2)
Evaluating ... ...
σw = 30000000
STEP 3: Convert Result to Output's Unit
30000000 Pascal -->30 Newton per Square Millimeter (Check conversion ​here)
FINAL ANSWER
30 Newton per Square Millimeter <-- Bending Stress in Crankweb
(Calculation completed in 00.004 seconds)

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Design of Crank Web at Top Dead Centre Position Calculators

Width of crank web of centre crankshaft at TDC position given compressive stress
​ LaTeX ​ Go Width of Crank Web = (Vertical Reaction at Bearing 1)/(Compressive Stress in Crank Web Central Plane*Thickness of Crank Web)
Direct compressive stress in central plane of crank web of centre crankshaft at TDC position
​ LaTeX ​ Go Compressive Stress in Crank Web Central Plane = Vertical Reaction at Bearing 1/(Width of Crank Web*Thickness of Crank Web)
Thickness of crank web of centre crankshaft at TDC position given diameter of crank pin
​ LaTeX ​ Go Thickness of Crank Web = 0.7*Diameter of Crank Pin
Width of crank web of centre crankshaft at TDC position given diameter of crank pin
​ LaTeX ​ Go Width of Crank Web = 1.14*Diameter of Crank Pin

Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment Formula

​LaTeX ​Go
Bending Stress in Crankweb = (Bending Moment at Central Plane of Crank Web*6)/(Width of Crank Web*Thickness of Crank Web^2)
σw = (Mb*6)/(w*t^2)

Faults of Crankshaft

1. Worn Journals
It usually occurs when there is not enough oil pressure available. If the crankshaft makes contact with the journal bearing surfaces, it gradually increases clearance and worsens the oil pressure. If not taken care of it, worn journals can cause serious problems for the engine. This destroys the bearings and causes heavy damage to the engine.
2. Fatigue
This occurs when the constant force on the crankshaft leads to breakage. This issue usually occurs on the fillet where the journal and web are involved. A smooth surface of the fillet is necessary to avoid weak spots that cause fatigue cracks. The cracks can be inspected using Magna-fluxing on the crankshaft.

How to Calculate Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment?

Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment calculator uses Bending Stress in Crankweb = (Bending Moment at Central Plane of Crank Web*6)/(Width of Crank Web*Thickness of Crank Web^2) to calculate the Bending Stress in Crankweb, Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment is the maximum amount of bending stress generated into the crank web for a given bending moment onto the crank web, designed for when the crank is at the top dead center position and subjected to maximum bending moment and no torsional moment. Bending Stress in Crankweb is denoted by σw symbol.

How to calculate Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment using this online calculator? To use this online calculator for Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment, enter Bending Moment at Central Plane of Crank Web (Mb), Width of Crank Web (w) & Thickness of Crank Web (t) and hit the calculate button. Here is how the Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment calculation can be explained with given input values -> 3E-5 = (520*6)/(0.065*0.04^2).

FAQ

What is Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment?
Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment is the maximum amount of bending stress generated into the crank web for a given bending moment onto the crank web, designed for when the crank is at the top dead center position and subjected to maximum bending moment and no torsional moment and is represented as σw = (Mb*6)/(w*t^2) or Bending Stress in Crankweb = (Bending Moment at Central Plane of Crank Web*6)/(Width of Crank Web*Thickness of Crank Web^2). Bending Moment at Central Plane of Crank Web is the reaction induced in the central plane of the crank web when an external force or moment is applied to the crank web causing it to bend, Width of Crank Web is defined as the width of the crank web (the portion of a crank between the crankpin and the shaft) measured perpendicular to the crankpin longitudinal axis & Thickness of Crank Web is defined as the thickness of the crank web (the portion of a crank between the crankpin and the shaft) measured parallel to the crankpin longitudinal axis.
How to calculate Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment?
Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment is the maximum amount of bending stress generated into the crank web for a given bending moment onto the crank web, designed for when the crank is at the top dead center position and subjected to maximum bending moment and no torsional moment is calculated using Bending Stress in Crankweb = (Bending Moment at Central Plane of Crank Web*6)/(Width of Crank Web*Thickness of Crank Web^2). To calculate Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment, you need Bending Moment at Central Plane of Crank Web (Mb), Width of Crank Web (w) & Thickness of Crank Web (t). With our tool, you need to enter the respective value for Bending Moment at Central Plane of Crank Web, Width of Crank Web & Thickness of Crank Web and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Bending Stress in Crankweb?
In this formula, Bending Stress in Crankweb uses Bending Moment at Central Plane of Crank Web, Width of Crank Web & Thickness of Crank Web. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Bending Stress in Crankweb = (6*Vertical Reaction at Bearing 1*(Centre Crankshaft Bearing1 Gap from CrankPinCentre-Length of Crank Pin/2-Thickness of Crank Web/2))/(Width of Crank Web*Thickness of Crank Web^2)
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