Permissible Bending Stress for Piston Calculator

✖Ultimate Tensile Strength of Piston is the maximum stress that the piston's material can withstand while being stretched or pulled before breaking.ⓘ Ultimate Tensile Strength of Piston [P₀]			+10% -10%
✖Factor of Safety of Engine Piston expresses how much stronger an engine piston is than it needs to be for an intended load.ⓘ Factor of Safety of Engine Piston [f_s]			+10% -10%

✖Bending Stress in Piston Head is the amount of bending stress that is generated in the piston head material due to the gas load on piston top.ⓘ Permissible Bending Stress for Piston [σb_ph]

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Formula

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Permissible Bending Stress for Piston

Formula

`"σb"_{"ph"} = "P"_{"0"}/"f"_{"s"}`

Example

`"30.66667N/mm²"="92N/mm²"/"3"`

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Permissible Bending Stress for Piston Solution

STEP 0: Pre-Calculation Summary

Formula Used

Bending Stress in Piston Head = Ultimate Tensile Strength of Piston/Factor of Safety of Engine Piston
σb_ph = P₀/f_s
This formula uses 3 Variables

Variables Used

Bending Stress in Piston Head - (Measured in Pascal) - Bending Stress in Piston Head is the amount of bending stress that is generated in the piston head material due to the gas load on piston top.
Ultimate Tensile Strength of Piston - (Measured in Pascal) - Ultimate Tensile Strength of Piston is the maximum stress that the piston's material can withstand while being stretched or pulled before breaking.
Factor of Safety of Engine Piston - Factor of Safety of Engine Piston expresses how much stronger an engine piston is than it needs to be for an intended load.

STEP 1: Convert Input(s) to Base Unit

Ultimate Tensile Strength of Piston: 92 Newton per Square Millimeter --> 92000000 Pascal (Check conversion here)
Factor of Safety of Engine Piston: 3 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

σb_ph = P₀/f_s --> 92000000/3

Evaluating ... ...

σb_ph = 30666666.6666667

STEP 3: Convert Result to Output's Unit

30666666.6666667 Pascal -->30.6666666666667 Newton per Square Millimeter (Check conversion here)

FINAL ANSWER

30.6666666666667 ≈ 30.66667 Newton per Square Millimeter <-- Bending Stress in Piston Head

(Calculation completed in 00.004 seconds)

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Created by Saurabh Patil

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

Saurabh Patil has created this Calculator and 700+ more calculators!

Verified by sanjay shiva

national institute of technology hamirpur (NITH ), hamirpur , himachal pradesh

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< 7 Thickness of Piston Head Calculators

Thickness of Piston Head According to Grashoff's Formula

Go Thickness of Piston Head = Diameter of Cylinder Bore*sqrt(3*Maximum Gas Pressure inside Cylinder/(16*Bending Stress in Piston Head))

Thickness of Piston Head Considering Heat Dissipation

Go Thickness of Piston Head = Heat Conducted through Piston Head/(12.56*Thermal conductivity of piston*Temperature difference between Center and Edge)

Amount of Heat Conducted through Piston Head given Higher Calorific Value of Fuel

Go Heat Conducted through Piston Head = 0.05*Higher Calorific Value of Fuel*Mass of Fuel per Brakepower per Second*Brakepower of Engine per Cylinder

Amount of Heat Conducted through Piston Head

Go Heat Conducted through Piston Head = Thickness of Piston Head*12.56*Thermal conductivity of piston*Temperature difference between Center and Edge

Maximum Gas Force on Piston Head

Go Force on Piston = pi*Diameter of Cylinder Bore^2*Maximum Gas Pressure inside Cylinder/4

Permissible Bending Stress for Piston

Go Bending Stress in Piston Head = Ultimate Tensile Strength of Piston/Factor of Safety of Engine Piston

Thickness of piston head given cylinder inner diameter

Go Thickness of Piston Head = 0.032*Diameter of Cylinder Bore+1.5

Permissible Bending Stress for Piston Formula

Bending Stress in Piston Head = Ultimate Tensile Strength of Piston/Factor of Safety of Engine Piston
σb_ph = P₀/f_s

Piston Material

Pistons are made from either low-carbon steel or aluminum alloys. The piston is subjected to high heat, inertia, vibration, and friction. Carbon steels minimize the effects of differential thermal expansion between the piston and cylinder walls.

How to Calculate Permissible Bending Stress for Piston?

Permissible Bending Stress for Piston calculator uses Bending Stress in Piston Head = Ultimate Tensile Strength of Piston/Factor of Safety of Engine Piston to calculate the Bending Stress in Piston Head, Permissible bending stress for piston is the maximum amount of bending stress that can be generated in the piston before its failure or fracture. Bending Stress in Piston Head is denoted by σb_ph symbol.

How to calculate Permissible Bending Stress for Piston using this online calculator? To use this online calculator for Permissible Bending Stress for Piston, enter Ultimate Tensile Strength of Piston (P₀) & Factor of Safety of Engine Piston (f_s) and hit the calculate button. Here is how the Permissible Bending Stress for Piston calculation can be explained with given input values -> 3.1E-5 = 92000000/3.

FAQ

What is Permissible Bending Stress for Piston?

Permissible bending stress for piston is the maximum amount of bending stress that can be generated in the piston before its failure or fracture and is represented as σb_ph = P₀/f_s or Bending Stress in Piston Head = Ultimate Tensile Strength of Piston/Factor of Safety of Engine Piston. Ultimate Tensile Strength of Piston is the maximum stress that the piston's material can withstand while being stretched or pulled before breaking & Factor of Safety of Engine Piston expresses how much stronger an engine piston is than it needs to be for an intended load.

How to calculate Permissible Bending Stress for Piston?

Permissible bending stress for piston is the maximum amount of bending stress that can be generated in the piston before its failure or fracture is calculated using Bending Stress in Piston Head = Ultimate Tensile Strength of Piston/Factor of Safety of Engine Piston. To calculate Permissible Bending Stress for Piston, you need Ultimate Tensile Strength of Piston (P₀) & Factor of Safety of Engine Piston (f_s). With our tool, you need to enter the respective value for Ultimate Tensile Strength of Piston & Factor of Safety of Engine Piston 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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