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

✖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.ⓘ Bending Moment at central plane of crank web [M_b]			+10% -10%
✖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.ⓘ Width of Crank Web [w]			+10% -10%
✖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.ⓘ Thickness of Crank Web [t]			+10% -10%

✖Bending Stress in Crank web is the bending stress in the crank web due to the bending moment acting onto the crank web.ⓘ Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment [σ_bweb]

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Formula

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

Formula

`("σ"_{"b"}"web") = ("M"_{"b"}*6)/("w"*"t"^2)`

Example

`"30N/mm²"=("520000N*mm"*6)/("65mm"*("40mm")^2)`

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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 Crank web = (Bending Moment at central plane of crank web*6)/(Width of Crank Web*Thickness of Crank Web^2)
σ_bweb = (M_b*6)/(w*t^2)
This formula uses 4 Variables

Variables Used

Bending Stress in Crank web - (Measured in Pascal) - Bending Stress in Crank web 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: 520000 Newton Millimeter --> 520 Newton Meter (Check conversion here)
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

σ_bweb = (M_b*6)/(w*t^2) --> (520*6)/(0.065*0.04^2)

Evaluating ... ...

σ_bweb = 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 Crank web

(Calculation completed in 00.020 seconds)

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Home » Physics » IC Engine » Design of IC Engine Components » Crankshaft » Design of Centre Crankshaft » Design of Crank Web at Top Dead Centre Position » Maximum Bending stress in crank web of centre crankshaft at TDC position given bending moment

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< 15 Design of Crank Web at Top Dead Centre Position Calculators

Total compressive stress at central plane of crank web of centre crankshaft at TDC position

Go Total Compressive Stress in Crank Web = ((Vertical Reaction at Bearing 1)/(Width of Crank Web*Thickness of Crank Web))+((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))

Bending stress at central plane of crank web of centre crankshaft at TDC position

Go Bending Stress in Crank web = (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)

Bending moment at central plane of crank web of centre crankshaft at TDC position

Go Bending Moment at central plane of crank web = Vertical Reaction at Bearing 1*((Centre Crankshaft Bearing1 Gap from CrankPinCentre)-(Length of Crank Pin/2)-(Thickness of Crank Web/2))

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

Go Bending Stress in Crank web = (Bending Moment at central plane of crank web*6)/(Width of Crank Web*Thickness of Crank Web^2)

Direct compressive stress in central plane of crank web of centre crankshaft at TDC position

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 compressive stress

Go Thickness of Crank Web = (Vertical Reaction at Bearing 1)/(Width of Crank Web*Compressive Stress in Crank Web Central Plane)

Width of crank web of centre crankshaft at TDC position given compressive stress

Go Width of Crank Web = (Vertical Reaction at Bearing 1)/(Compressive Stress in Crank Web Central Plane*Thickness of Crank Web)

Thickness of crank web of centre crankshaft at TDC position given bending moment in crank pin

Go Thickness of Crank Web = 0.7*((32*Bending Moment at central plane of crankpin)/(pi*Bending Stress in Crankpin))^(1/3)

Width of crank web of centre crankshaft at TDC position given bending moment in crank pin

Go Width of Crank Web = 1.14*((32*Bending Moment at central plane of crankpin)/(pi*Bending Stress in Crankpin))^(1/3)

Thickness of crank web of centre crankshaft at TDC position given bearing pressure for crank pin

Go Thickness of Crank Web = 0.7*(Force on crank pin)/(Bearing Pressure in Crank Pin*Length of Crank Pin)

Width of crank web of centre crankshaft at TDC position given bearing pressure for crank pin

Go Width of Crank Web = 1.14*(Force on crank pin)/(Bearing Pressure in Crank Pin*Length of Crank Pin)

Thickness of crank web of centre crankshaft at TDC position given diameter of crank pin

Go Thickness of Crank Web = 0.7*Diameter of crank pin

Width of crank web of centre crankshaft at TDC position given thickness of crank web

Go Width of Crank Web = 1.6285*Thickness of Crank Web

Thickness of crank web of centre crankshaft at TDC position given width of crank web

Go Thickness of Crank Web = 0.614*Width of Crank Web

Width of crank web of centre crankshaft at TDC position given diameter of crank pin

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

Bending Stress in Crank web = (Bending Moment at central plane of crank web*6)/(Width of Crank Web*Thickness of Crank Web^2)
σ_bweb = (M_b*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 Crank web = (Bending Moment at central plane of crank web*6)/(Width of Crank Web*Thickness of Crank Web^2) to calculate the Bending Stress in Crank web, 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 Crank web is denoted by σ_bweb 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 (M_b), 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 -> 1.2E-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 σ_bweb = (M_b*6)/(w*t^2) or Bending Stress in Crank web = (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 Crank web = (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 (M_b), 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 Crank web?

In this formula, Bending Stress in Crank web 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 Crank web = (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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