Width of Big End Cap of Connecting Rod given Bending Stress in Cap Solution

STEP 0: Pre-Calculation Summary
Formula Used
Width of Big End Cap = Inertia Force on Bolts of Connecting Rod*Span Length of Big End Cap/(Thickness of Big End Cap^2*Bending Stress in Big end of Connecting Rod)
bc = Pi*l/(tc^2*σbbig)
This formula uses 5 Variables
Variables Used
Width of Big End Cap - (Measured in Meter) - Width of big end cap is the width of the big end cap of the connecting rod.
Inertia Force on Bolts of Connecting Rod - (Measured in Newton) - Inertia force on bolts of connecting rod is the force acting on the bolts of the connecting rod and cap joint due to the force on the piston head and its reciprocation.
Span Length of Big End Cap - (Measured in Meter) - Span length of big end cap of a connecting rod is the distance between the bolt centers of the bolts used for fastening the big end cap.
Thickness of Big End Cap - (Measured in Meter) - Thickness of big end cap is the thickness of the big end cap of the connecting rod.
Bending Stress in Big end of Connecting Rod - (Measured in Pascal) - Bending stress in big end of connecting rod is the stress induced in the big end cap of a connecting rod when an external force or moment is applied to the element, causing the element to bend.
STEP 1: Convert Input(s) to Base Unit
Inertia Force on Bolts of Connecting Rod: 8000 Newton --> 8000 Newton No Conversion Required
Span Length of Big End Cap: 80 Millimeter --> 0.08 Meter (Check conversion here)
Thickness of Big End Cap: 12 Millimeter --> 0.012 Meter (Check conversion here)
Bending Stress in Big end of Connecting Rod: 58 Newton per Square Millimeter --> 58000000 Pascal (Check conversion here)
STEP 2: Evaluate Formula
Substituting Input Values in Formula
bc = Pi*l/(tc^2*σbbig) --> 8000*0.08/(0.012^2*58000000)
Evaluating ... ...
bc = 0.0766283524904215
STEP 3: Convert Result to Output's Unit
0.0766283524904215 Meter -->76.6283524904214 Millimeter (Check conversion here)
FINAL ANSWER
76.6283524904214 76.62835 Millimeter <-- Width of Big End Cap
(Calculation completed in 00.020 seconds)

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11 Big End Cap and Bolt Calculators

Inertia Force on Bolts of Connecting Rod
Go Inertia Force on Bolts of Connecting Rod = Mass of Reciprocating Parts in Engine Cylinder*Angular Velocity of Crank^2*Crank Radius of Engine*(cos(Crank Angle)+cos(2*Crank Angle)/Ratio of length of connecting rod to crank length)
Thickness of Big End Cap of Connecting Rod given Bending Stress in Cap
Go Thickness of Big End Cap = sqrt(Inertia Force on Bolts of Connecting Rod*Span Length of Big End Cap/(Width of Big End Cap*Bending Stress in Big end of Connecting Rod))
Maximum Inertia Force on Bolts of Connecting Rod
Go Inertia Force on Bolts of Connecting Rod = Mass of Reciprocating Parts in Engine Cylinder*Angular Velocity of Crank^2*Crank Radius of Engine*(1+1/Ratio of length of connecting rod to crank length)
Maximum Bending Moment on Connecting Rod
Go Bending moment on connecting rod = Mass of Connecting Rod*Angular Velocity of Crank^2*Crank Radius of Engine*Length of the connecting rod/(9*sqrt(3))
Width of Big End Cap of Connecting Rod given Bending Stress in Cap
Go Width of Big End Cap = Inertia Force on Bolts of Connecting Rod*Span Length of Big End Cap/(Thickness of Big End Cap^2*Bending Stress in Big end of Connecting Rod)
Maximum Bending Stress in Big End Cap of Connecting Rod
Go Bending Stress in Big end of Connecting Rod = Inertia Force on Bolts of Connecting Rod*Span Length of Big End Cap/(Thickness of Big End Cap^2*Width of Big End Cap)
Core Diameter of Bolts of Big End Cap of Connecting Rod
Go Core Diameter of Big End Bolt = sqrt(2*Inertia Force on Bolts of Connecting Rod/(pi*Permissible tensile stress))
Mass of Connecting Rod
Go Mass of Connecting Rod = Cross Sectional Area of Connecting Rod*Density of connecting rod material*Length of the connecting rod
Maximum Inertia Force on Bolts of Connecting Rod given Permissible Tensile Stress of Bolts
Go Inertia Force on Bolts of Connecting Rod = pi*Core Diameter of Big End Bolt^2*Permissible tensile stress/2
Span Length of Big End Cap of Connecting Rod
Go Span Length of Big End Cap = Diameter of Crank Pin+2*Thickness of Bush+Nominal Bolt Diameter+0.003
Bending Moment on Big End Cap of Connecting Rod
Go Bending moment on big end of connecting rod = Inertia Force on Bolts of Connecting Rod*Span Length of Big End Cap/6

Width of Big End Cap of Connecting Rod given Bending Stress in Cap Formula

Width of Big End Cap = Inertia Force on Bolts of Connecting Rod*Span Length of Big End Cap/(Thickness of Big End Cap^2*Bending Stress in Big end of Connecting Rod)
bc = Pi*l/(tc^2*σbbig)

Material of bolts for big end cap

The bolts and the big end cap are subjected to a tensile force which corresponds to the inertia force of the reciprocating parts at the top dead center on the exhaust stroke. The bolts may be made of high carbon steel or nickel alloy steel. Since the bolts are under repeated stresses but not alternating stresses, therefore, a factor of safety may be taken as 6.

How to Calculate Width of Big End Cap of Connecting Rod given Bending Stress in Cap?

Width of Big End Cap of Connecting Rod given Bending Stress in Cap calculator uses Width of Big End Cap = Inertia Force on Bolts of Connecting Rod*Span Length of Big End Cap/(Thickness of Big End Cap^2*Bending Stress in Big end of Connecting Rod) to calculate the Width of Big End Cap, Width of big end cap of connecting rod given bending stress in cap is the width of the big end cap of the connecting rod. Width of Big End Cap is denoted by bc symbol.

How to calculate Width of Big End Cap of Connecting Rod given Bending Stress in Cap using this online calculator? To use this online calculator for Width of Big End Cap of Connecting Rod given Bending Stress in Cap, enter Inertia Force on Bolts of Connecting Rod (Pi), Span Length of Big End Cap (l), Thickness of Big End Cap (tc) & Bending Stress in Big end of Connecting Rod (σbbig) and hit the calculate button. Here is how the Width of Big End Cap of Connecting Rod given Bending Stress in Cap calculation can be explained with given input values -> 76628.35 = 8000*0.08/(0.012^2*58000000).

FAQ

What is Width of Big End Cap of Connecting Rod given Bending Stress in Cap?
Width of big end cap of connecting rod given bending stress in cap is the width of the big end cap of the connecting rod and is represented as bc = Pi*l/(tc^2*σbbig) or Width of Big End Cap = Inertia Force on Bolts of Connecting Rod*Span Length of Big End Cap/(Thickness of Big End Cap^2*Bending Stress in Big end of Connecting Rod). Inertia force on bolts of connecting rod is the force acting on the bolts of the connecting rod and cap joint due to the force on the piston head and its reciprocation, Span length of big end cap of a connecting rod is the distance between the bolt centers of the bolts used for fastening the big end cap, Thickness of big end cap is the thickness of the big end cap of the connecting rod & Bending stress in big end of connecting rod is the stress induced in the big end cap of a connecting rod when an external force or moment is applied to the element, causing the element to bend.
How to calculate Width of Big End Cap of Connecting Rod given Bending Stress in Cap?
Width of big end cap of connecting rod given bending stress in cap is the width of the big end cap of the connecting rod is calculated using Width of Big End Cap = Inertia Force on Bolts of Connecting Rod*Span Length of Big End Cap/(Thickness of Big End Cap^2*Bending Stress in Big end of Connecting Rod). To calculate Width of Big End Cap of Connecting Rod given Bending Stress in Cap, you need Inertia Force on Bolts of Connecting Rod (Pi), Span Length of Big End Cap (l), Thickness of Big End Cap (tc) & Bending Stress in Big end of Connecting Rod (σbbig). With our tool, you need to enter the respective value for Inertia Force on Bolts of Connecting Rod, Span Length of Big End Cap, Thickness of Big End Cap & Bending Stress in Big end of Connecting Rod and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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