Length of crankpin given mean bending moment in crankpin Calculator

✖Bending Moment at central plane of crankpin is the reaction induced in the central plane of the crankpin when an external force or moment is applied to the crankpin causing it to bend.ⓘ Bending Moment at Central Plane of Crankpin [M_bpin]			+10% -10%
✖Force on crank pin is the force acting onto the crankpin used in the assembly of the crank, and the connecting rod.ⓘ Force on Crank Pin [P_p]			+10% -10%

✖Length of Crank Pin is the size of the crankpin from one end to the other and tells how long is the crankpin.ⓘ Length of crankpin given mean bending moment in crankpin [l_c]

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Formula

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Length of crankpin given mean bending moment in crankpin

Formula

`"l"_{"c"} = (4/3)*(("M"_{"b"}"pin")/"P"_{"p"})`

Example

`"6.837607mm"=(4/3)*("100000N*mm"/"19500N")`

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Length of crankpin given mean bending moment in crankpin Solution

STEP 0: Pre-Calculation Summary

Formula Used

Length of Crank Pin = (4/3)*(Bending Moment at Central Plane of Crankpin/Force on Crank Pin)
l_c = (4/3)*(M_bpin/P_p)
This formula uses 3 Variables

Variables Used

Length of Crank Pin - (Measured in Meter) - Length of Crank Pin is the size of the crankpin from one end to the other and tells how long is the crankpin.
Bending Moment at Central Plane of Crankpin - (Measured in Newton Meter) - Bending Moment at central plane of crankpin is the reaction induced in the central plane of the crankpin when an external force or moment is applied to the crankpin causing it to bend.
Force on Crank Pin - (Measured in Newton) - Force on crank pin is the force acting onto the crankpin used in the assembly of the crank, and the connecting rod.

STEP 1: Convert Input(s) to Base Unit

Bending Moment at Central Plane of Crankpin: 100000 Newton Millimeter --> 100 Newton Meter (Check conversion here)
Force on Crank Pin: 19500 Newton --> 19500 Newton No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

l_c = (4/3)*(M_bpin/P_p) --> (4/3)*(100/19500)

Evaluating ... ...

l_c = 0.00683760683760684

STEP 3: Convert Result to Output's Unit

0.00683760683760684 Meter -->6.83760683760684 Millimeter (Check conversion here)

FINAL ANSWER

6.83760683760684 ≈ 6.837607 Millimeter <-- Length of Crank Pin

(Calculation completed in 00.004 seconds)

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Home » Physics » IC Engine » Design of IC Engine Components » Crankshaft » Design of Side Crankshaft » Design of Crank Pin at Top Dead Centre Position » Length of crankpin given mean bending moment in crankpin

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Created by Saurabh Patil

Shri Govindram Seksaria Institute of Technology and Science (SGSITS ), Indore

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< 11 Design of Crank Pin at Top Dead Centre Position Calculators

Diameter of crankpin given mean bending stress in crankpin

Go Diameter of Crank Pin = ((32*Bending Moment at Central Plane of Crankpin)/(pi*Bending Stress in Crankpin))^(1/3)

Bending stress in crank pin of side crankshaft at max torque given crankpin diameter

Go Bending Stress in Crankpin = (32*Bending Moment at Central Plane of Crankpin)/(pi*Diameter of Crank Pin^3)

Mean bending stress in crankpin given bending moment and crankpin diameter

Go Bending Stress in Crankpin = (32*Bending Moment at Central Plane of Crankpin)/(pi*Diameter of Crank Pin^3)

Mean bending moment in crankpin given bending stress and crankpin diameter

Go Bending Moment at Central Plane of Crankpin = (pi*Diameter of Crank Pin^3*Bending Stress in Crankpin)/32

Maximum bending moment in crankpin when load is uniformly distributed along length as cantilever

Go Bending Moment at Central Plane of Crankpin = (1/2)*(Force on Crank Pin*Length of Crank Pin)

Length of crankpin given mean bending moment in crankpin

Go Length of Crank Pin = (4/3)*(Bending Moment at Central Plane of Crankpin/Force on Crank Pin)

Mean bending moment in crankpin

Go Bending Moment at Central Plane of Crankpin = (3/4)*(Force on Crank Pin*Length of Crank Pin)

Maximum bending moment in crankpin when load acts at end point on crankpin as cantilever beam

Go Bending Moment at Central Plane of Crankpin = (Force on Crank Pin*Length of Crank Pin)

Section modulus of crankpin

Go Section Modulus of Crankpin = (pi*Diameter of Crank Pin^3)/32

Minimum length of crankpin given crankpin diameter

Go Length of Crank Pin = 0.6*Diameter of Crank Pin

Maximum length of crankpin given crankpin diameter

Go Length of Crank Pin = 1.4*Diameter of Crank Pin

Length of crankpin given mean bending moment in crankpin Formula

Length of Crank Pin = (4/3)*(Bending Moment at Central Plane of Crankpin/Force on Crank Pin)
l_c = (4/3)*(M_bpin/P_p)

Connecting Rod

The main function of a connecting rod is to form a link between a piston and crankshaft. A small end of the connecting rod is connected to the piston with a gudgeon pin and the big end is separated into two parts for ease of assembly with a crankpin. The two parts of the big end are the bearing cap and big end housing. Both are being bolted together. This is done for ease of assembly of connecting rod with a crankpin. To supply oil to the big end, the oil hole is drilled from the big end.

Crankpin Material

Crankpins are generally made of carbon steel, forged steel, and alloy steel. It also improves the strength of the component. The surface of the crankpin is hardened by case carburizing, nitriding, or induction hardening.

How to Calculate Length of crankpin given mean bending moment in crankpin?

Length of crankpin given mean bending moment in crankpin calculator uses Length of Crank Pin = (4/3)*(Bending Moment at Central Plane of Crankpin/Force on Crank Pin) to calculate the Length of Crank Pin, Length of crankpin given mean bending moment in crankpin is the total length of the crankpin of the crank and connecting rod assembly. Length of Crank Pin is denoted by l_c symbol.

How to calculate Length of crankpin given mean bending moment in crankpin using this online calculator? To use this online calculator for Length of crankpin given mean bending moment in crankpin, enter Bending Moment at Central Plane of Crankpin (M_bpin) & Force on Crank Pin (P_p) and hit the calculate button. Here is how the Length of crankpin given mean bending moment in crankpin calculation can be explained with given input values -> 6837.607 = (4/3)*(100/19500).

FAQ

What is Length of crankpin given mean bending moment in crankpin?

Length of crankpin given mean bending moment in crankpin is the total length of the crankpin of the crank and connecting rod assembly and is represented as l_c = (4/3)*(M_bpin/P_p) or Length of Crank Pin = (4/3)*(Bending Moment at Central Plane of Crankpin/Force on Crank Pin). Bending Moment at central plane of crankpin is the reaction induced in the central plane of the crankpin when an external force or moment is applied to the crankpin causing it to bend & Force on crank pin is the force acting onto the crankpin used in the assembly of the crank, and the connecting rod.

How to calculate Length of crankpin given mean bending moment in crankpin?

Length of crankpin given mean bending moment in crankpin is the total length of the crankpin of the crank and connecting rod assembly is calculated using Length of Crank Pin = (4/3)*(Bending Moment at Central Plane of Crankpin/Force on Crank Pin). To calculate Length of crankpin given mean bending moment in crankpin, you need Bending Moment at Central Plane of Crankpin (M_bpin) & Force on Crank Pin (P_p). With our tool, you need to enter the respective value for Bending Moment at Central Plane of Crankpin & Force on Crank Pin 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 Length of Crank Pin?

In this formula, Length of Crank Pin uses Bending Moment at Central Plane of Crankpin & Force on Crank Pin. We can use 2 other way(s) to calculate the same, which is/are as follows -

Length of Crank Pin = 0.6*Diameter of Crank Pin
Length of Crank Pin = 1.4*Diameter of Crank Pin

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