Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions Solution

STEP 0: Pre-Calculation Summary
Formula Used
Maximum Compressive Stress in Crank Web = (6*Bending Moment in Crankweb Due to Radial Force)/(Thickness of Crank Web^2*Width of Crank Web)+(6*Bending Moment in Crankweb Due to Tangential Force)/(Thickness of Crank Web*Width of Crank Web^2)+(Radial Force at Crank Pin/(2*Width of Crank Web*Thickness of Crank Web))
σcm = (6*Mbr)/(t^2*w)+(6*Mbt)/(t*w^2)+(Pr/(2*w*t))
This formula uses 6 Variables
Variables Used
Maximum Compressive Stress in Crank Web - (Measured in Pascal) - Maximum Compressive Stress in Crank Web is stress in Crank Web as a result of compressive stress by radial thrust on connecting rod, &bending stress by tangential & radial components of thrust force.
Bending Moment in Crankweb Due to Radial Force - (Measured in Newton Meter) - Bending Moment in Crankweb Due to Radial Force is the bending moment in the crankweb due to the radial component of force on connecting rod at crank pin.
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.
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.
Bending Moment in Crankweb Due to Tangential Force - (Measured in Newton Meter) - Bending Moment in Crankweb Due to Tangential Force is the bending moment in the crankweb due to the tangential component of force on connecting rod at crank pin.
Radial Force at Crank Pin - (Measured in Newton) - Radial Force at Crank Pin is the component of thrust force on connecting rod acting at the crankpin in the direction radially to the connecting rod.
STEP 1: Convert Input(s) to Base Unit
Bending Moment in Crankweb Due to Radial Force: 260000 Newton Millimeter --> 260 Newton Meter (Check conversion ​here)
Thickness of Crank Web: 40 Millimeter --> 0.04 Meter (Check conversion ​here)
Width of Crank Web: 65 Millimeter --> 0.065 Meter (Check conversion ​here)
Bending Moment in Crankweb Due to Tangential Force: 56333.33 Newton Millimeter --> 56.33333 Newton Meter (Check conversion ​here)
Radial Force at Crank Pin: 21500 Newton --> 21500 Newton No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
σcm = (6*Mbr)/(t^2*w)+(6*Mbt)/(t*w^2)+(Pr/(2*w*t)) --> (6*260)/(0.04^2*0.065)+(6*56.33333)/(0.04*0.065^2)+(21500/(2*0.065*0.04))
Evaluating ... ...
σcm = 21134615.2662722
STEP 3: Convert Result to Output's Unit
21134615.2662722 Pascal -->21.1346152662722 Newton per Square Millimeter (Check conversion ​here)
FINAL ANSWER
21.1346152662722 21.13462 Newton per Square Millimeter <-- Maximum Compressive Stress in Crank Web
(Calculation completed in 00.008 seconds)

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Design of Crank Web at Angle of Maximum Torque Calculators

Bending moment in crankweb of centre crankshaft due to radial thrust for maximum torque
​ LaTeX ​ Go Bending Moment in Crankweb Due to Radial Force = Vertical Reaction at Bearing 2 Due to Radial Force*(Centre Crankshaft Bearing2 Gap from CrankPinCentre-Length of Crank Pin/2-Thickness of Crank Web/2)
Bending moment in crankweb of centre crankshaft due to tangential thrust for maximum torque
​ LaTeX ​ Go Bending Moment in Crankweb Due to Tangential Force = Tangential Force at Crank Pin*(Distance Between Crank Pin And Crankshaft-Diameter of Crankshaft at Crankweb Joint/2)
Bending moment in crankweb of centre crankshaft due to tangential thrust for max torque given stress
​ LaTeX ​ Go Bending Moment in Crankweb Due to Tangential Force = (Bending Stress in Crankweb Due to Tangential Force*Thickness of Crank Web*Width of Crank Web^2)/6
Bending moment in crankweb of centre crankshaft due to radial thrust for max torque given stress
​ LaTeX ​ Go Bending Moment in Crankweb Due to Radial Force = (Bending Stress in Crankweb Due to Radial Force*Width of Crank Web*Thickness of Crank Web^2)/6

Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions Formula

​LaTeX ​Go
Maximum Compressive Stress in Crank Web = (6*Bending Moment in Crankweb Due to Radial Force)/(Thickness of Crank Web^2*Width of Crank Web)+(6*Bending Moment in Crankweb Due to Tangential Force)/(Thickness of Crank Web*Width of Crank Web^2)+(Radial Force at Crank Pin/(2*Width of Crank Web*Thickness of Crank Web))
σcm = (6*Mbr)/(t^2*w)+(6*Mbt)/(t*w^2)+(Pr/(2*w*t))

Types of Crank Shaft

There are two types of crankshafts—side crankshaft and centre crankshaft. The side crankshaft is also called the ‘overhung’ crankshaft. It has only one crank web and requires only two bearings for support. It is used in medium-size engines and large-size horizontal engines. The center crankshaft has two webs and three bearings for support. It is used in radial aircraft engines, stationary engines, and marine engines. It is more popular in automotive engines. Crankshafts are also classified as single-throw and multi-throw crankshafts depending upon the number of crankpins used in the assembly. Crankshafts used in multi-cylinder engines have more than one crank pin. They are called multi-throw crankshafts.

How to Calculate Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions?

Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions calculator uses Maximum Compressive Stress in Crank Web = (6*Bending Moment in Crankweb Due to Radial Force)/(Thickness of Crank Web^2*Width of Crank Web)+(6*Bending Moment in Crankweb Due to Tangential Force)/(Thickness of Crank Web*Width of Crank Web^2)+(Radial Force at Crank Pin/(2*Width of Crank Web*Thickness of Crank Web)) to calculate the Maximum Compressive Stress in Crank Web, Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions is the maximum compressive stress induced into the crank web as a result of the direct compressive stress due to radial thrust on connecting rod, and bending stress due to the tangential and radial components of thrust force and when the centre crankshaft is designed for maximum torsional moment. Maximum Compressive Stress in Crank Web is denoted by σcm symbol.

How to calculate Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions using this online calculator? To use this online calculator for Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions, enter Bending Moment in Crankweb Due to Radial Force (Mbr), Thickness of Crank Web (t), Width of Crank Web (w), Bending Moment in Crankweb Due to Tangential Force (Mbt) & Radial Force at Crank Pin (Pr) and hit the calculate button. Here is how the Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions calculation can be explained with given input values -> 2.1E-5 = (6*260)/(0.04^2*0.065)+(6*56.33333)/(0.04*0.065^2)+(21500/(2*0.065*0.04)).

FAQ

What is Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions?
Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions is the maximum compressive stress induced into the crank web as a result of the direct compressive stress due to radial thrust on connecting rod, and bending stress due to the tangential and radial components of thrust force and when the centre crankshaft is designed for maximum torsional moment and is represented as σcm = (6*Mbr)/(t^2*w)+(6*Mbt)/(t*w^2)+(Pr/(2*w*t)) or Maximum Compressive Stress in Crank Web = (6*Bending Moment in Crankweb Due to Radial Force)/(Thickness of Crank Web^2*Width of Crank Web)+(6*Bending Moment in Crankweb Due to Tangential Force)/(Thickness of Crank Web*Width of Crank Web^2)+(Radial Force at Crank Pin/(2*Width of Crank Web*Thickness of Crank Web)). Bending Moment in Crankweb Due to Radial Force is the bending moment in the crankweb due to the radial component of force on connecting rod at crank pin, 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, 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, Bending Moment in Crankweb Due to Tangential Force is the bending moment in the crankweb due to the tangential component of force on connecting rod at crank pin & Radial Force at Crank Pin is the component of thrust force on connecting rod acting at the crankpin in the direction radially to the connecting rod.
How to calculate Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions?
Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions is the maximum compressive stress induced into the crank web as a result of the direct compressive stress due to radial thrust on connecting rod, and bending stress due to the tangential and radial components of thrust force and when the centre crankshaft is designed for maximum torsional moment is calculated using Maximum Compressive Stress in Crank Web = (6*Bending Moment in Crankweb Due to Radial Force)/(Thickness of Crank Web^2*Width of Crank Web)+(6*Bending Moment in Crankweb Due to Tangential Force)/(Thickness of Crank Web*Width of Crank Web^2)+(Radial Force at Crank Pin/(2*Width of Crank Web*Thickness of Crank Web)). To calculate Maximum compressive stress in crankweb of centre crankshaft for max torque given crankweb dimensions, you need Bending Moment in Crankweb Due to Radial Force (Mbr), Thickness of Crank Web (t), Width of Crank Web (w), Bending Moment in Crankweb Due to Tangential Force (Mbt) & Radial Force at Crank Pin (Pr). With our tool, you need to enter the respective value for Bending Moment in Crankweb Due to Radial Force, Thickness of Crank Web, Width of Crank Web, Bending Moment in Crankweb Due to Tangential Force & Radial Force at 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 Maximum Compressive Stress in Crank Web?
In this formula, Maximum Compressive Stress in Crank Web uses Bending Moment in Crankweb Due to Radial Force, Thickness of Crank Web, Width of Crank Web, Bending Moment in Crankweb Due to Tangential Force & Radial Force at Crank Pin. We can use 2 other way(s) to calculate the same, which is/are as follows -
  • Maximum Compressive Stress in Crank Web = Direct Compressive Stress in Crankweb+Bending Stress in Crankweb Due to Radial Force+Bending Stress in Crankweb Due to Tangential Force
  • Maximum Compressive Stress in Crank Web = Direct Compressive Stress in Crankweb/2+((sqrt(Direct Compressive Stress in Crankweb^2+4*Shear Stress in Crankweb^2))/2)
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