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Pre Load in Bolt is the tension created in a bolt when it is tightened. Check FAQs
Pi=δck
Pi - Pre Load in Bolt?δc - Amount of Compression of Bolted Joint?k - Combined Stiffness of Bolt?

Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt Example

With values
With units
Only example

Here is how the Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt equation looks like with Values.

Here is how the Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt equation looks like with Units.

Here is how the Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt equation looks like.

16500Edit=11Edit1500Edit
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Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt Solution

Follow our step by step solution on how to calculate Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt?

FIRST Step Consider the formula
Pi=δck
Next Step Substitute values of Variables
Pi=11mm1500N/mm
Next Step Convert Units
Pi=0.011m1.5E+6N/m
Next Step Prepare to Evaluate
Pi=0.0111.5E+6
LAST Step Evaluate
Pi=16500N

Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt Formula Elements

Variables
Pre Load in Bolt
Pre Load in Bolt is the tension created in a bolt when it is tightened.
Symbol: Pi
Measurement: ForceUnit: N
Note: Value should be greater than 0.
Amount of Compression of Bolted Joint
Amount of Compression of Bolted Joint is the value by which the bolted joint system has been compressed.
Symbol: δc
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Combined Stiffness of Bolt
Combined Stiffness of Bolt is the resisting force per unit change in length of the bolt and the assembly.
Symbol: k
Measurement: Stiffness ConstantUnit: N/mm
Note: Value should be greater than 0.

Other Formulas to find Pre Load in Bolt

​Go Pre Load in Bolt given Elongation of Bolt
Pi=bkb'
​Go Pre Load in Bolt given Wrench Torque
Pi=Mt0.2d

Other formulas in Load and Strength Characteristics category

​Go Tensile Force on Bolt given Maximum Tensile Stress in Bolt
Ptb=σtmaxπ4dc2
​Go Tensile Force on Bolt in Tension
Ptb=π4dc2Sytfs
​Go Tensile Force on Bolt in Shear
Ptb=πdchSsyfs
​Go Stiffness of Bolt given Thickness of Parts Joined by Bolt
kb'=πd2E4l

How to Evaluate Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt?

Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt evaluator uses Pre Load in Bolt = Amount of Compression of Bolted Joint*Combined Stiffness of Bolt to evaluate the Pre Load in Bolt, Pre load in Bolt given Amount of Compression in Parts Joined by Bolt formula is defined as the tension created in a fastener when it is tightened. This tensile force in the bolt creates a compressive force in the bolted joint known as clamp force. For practical purposes, the clamping force in an unloaded bolted joint is assumed to be equal and opposite of the preload. Pre Load in Bolt is denoted by Pi symbol.

How to evaluate Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt using this online evaluator? To use this online evaluator for Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt, enter Amount of Compression of Bolted Joint c) & Combined Stiffness of Bolt (k) and hit the calculate button.

FAQs on Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt

What is the formula to find Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt?
The formula of Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt is expressed as Pre Load in Bolt = Amount of Compression of Bolted Joint*Combined Stiffness of Bolt. Here is an example- 16500 = 0.011*1500000.
How to calculate Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt?
With Amount of Compression of Bolted Joint c) & Combined Stiffness of Bolt (k) we can find Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt using the formula - Pre Load in Bolt = Amount of Compression of Bolted Joint*Combined Stiffness of Bolt.
What are the other ways to Calculate Pre Load in Bolt?
Here are the different ways to Calculate Pre Load in Bolt-
  • Pre Load in Bolt=Elongation of Bolt*Stiffness of BoltOpenImg
  • Pre Load in Bolt=Wrench Torque for Bolt Tightening/(0.2*Nominal Bolt Diameter)OpenImg
Can the Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt be negative?
No, the Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt, measured in Force cannot be negative.
Which unit is used to measure Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt?
Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt is usually measured using the Newton[N] for Force. Exanewton[N], Meganewton[N], Kilonewton[N] are the few other units in which Pre Load in Bolt given Amount of Compression in Parts Joined by Bolt can be measured.
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