Bending Moment applied on Spring given Bending Stress Formula

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Bending moment in spring is the rotational force that causes the helical torsion spring to twist or deform around its axis. Check FAQs
Mb=σbtπd3K32
Mb - Bending moment in spring?σbt - Bending Stress in Torsion Spring?d - Diameter of Spring Wire?K - Wahl Factor of Spring?π - Archimedes' constant?

Bending Moment applied on Spring given Bending Stress Example

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With units
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Here is how the Bending Moment applied on Spring given Bending Stress equation looks like with Values.

Here is how the Bending Moment applied on Spring given Bending Stress equation looks like with Units.

Here is how the Bending Moment applied on Spring given Bending Stress equation looks like.

4325.7741Edit=800.0002Edit3.14164Edit31.162Edit32
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Bending Moment applied on Spring given Bending Stress Solution

Follow our step by step solution on how to calculate Bending Moment applied on Spring given Bending Stress?

FIRST Step Consider the formula
Mb=σbtπd3K32
Next Step Substitute values of Variables
Mb=800.0002N/mm²π4mm31.16232
Next Step Substitute values of Constants
Mb=800.0002N/mm²3.14164mm31.16232
Next Step Convert Units
Mb=8E+8Pa3.14160.004m31.16232
Next Step Prepare to Evaluate
Mb=8E+83.14160.00431.16232
Next Step Evaluate
Mb=4.32577409843436N*m
Next Step Convert to Output's Unit
Mb=4325.77409843436N*mm
LAST Step Rounding Answer
Mb=4325.7741N*mm

Bending Moment applied on Spring given Bending Stress Formula Elements

Variables
Constants
Bending moment in spring
Bending moment in spring is the rotational force that causes the helical torsion spring to twist or deform around its axis.
Symbol: Mb
Measurement: TorqueUnit: N*mm
Note: Value should be greater than 0.
Bending Stress in Torsion Spring
Bending Stress in Torsion Spring is the stress caused by twisting force in a helical torsion spring, affecting its structural integrity and performance.
Symbol: σbt
Measurement: StressUnit: N/mm²
Note: Value should be greater than 0.
Diameter of Spring Wire
Diameter of Spring Wire is the diameter of the wire of which a spring is made.
Symbol: d
Measurement: LengthUnit: mm
Note: Value should be greater than 0.
Wahl Factor of Spring
Wahl Factor of Spring is simply a measure of the degree to which external stress is amplified at the curvature of the spring coil.
Symbol: K
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Archimedes' constant
Archimedes' constant is a mathematical constant that represents the ratio of the circumference of a circle to its diameter.
Symbol: π
Value: 3.14159265358979323846264338327950288

Other formulas in Helical Torsion Springs category

​Go Bending Stress in Spring
σbt=K32Mbπd3
​Go Diameter of Spring Wire given Bending Stress in Spring
d=(K32Mbπσbt)13
​Go Stress Concentration Factor given Bending Stress in Spring
K=σbtπd332Mb
​Go Stiffness of Helical Torsion Spring
kh=Ed464DNa

How to Evaluate Bending Moment applied on Spring given Bending Stress?

Bending Moment applied on Spring given Bending Stress evaluator uses Bending moment in spring = Bending Stress in Torsion Spring*(pi*Diameter of Spring Wire^3)/(Wahl Factor of Spring*32) to evaluate the Bending moment in spring, Bending Moment applied on Spring given Bending Stress formula is defined as a measure of the twisting force that causes the spring to deform, which is essential in determining the spring's ability to withstand external loads and stresses in helical spring applications. Bending moment in spring is denoted by Mb symbol.

How to evaluate Bending Moment applied on Spring given Bending Stress using this online evaluator? To use this online evaluator for Bending Moment applied on Spring given Bending Stress, enter Bending Stress in Torsion Spring (σbt), Diameter of Spring Wire (d) & Wahl Factor of Spring (K) and hit the calculate button.

FAQs on Bending Moment applied on Spring given Bending Stress

What is the formula to find Bending Moment applied on Spring given Bending Stress?
The formula of Bending Moment applied on Spring given Bending Stress is expressed as Bending moment in spring = Bending Stress in Torsion Spring*(pi*Diameter of Spring Wire^3)/(Wahl Factor of Spring*32). Here is an example- 4.3E+6 = 800000200*(pi*0.004^3)/(1.162208*32).
How to calculate Bending Moment applied on Spring given Bending Stress?
With Bending Stress in Torsion Spring (σbt), Diameter of Spring Wire (d) & Wahl Factor of Spring (K) we can find Bending Moment applied on Spring given Bending Stress using the formula - Bending moment in spring = Bending Stress in Torsion Spring*(pi*Diameter of Spring Wire^3)/(Wahl Factor of Spring*32). This formula also uses Archimedes' constant .
Can the Bending Moment applied on Spring given Bending Stress be negative?
No, the Bending Moment applied on Spring given Bending Stress, measured in Torque cannot be negative.
Which unit is used to measure Bending Moment applied on Spring given Bending Stress?
Bending Moment applied on Spring given Bending Stress is usually measured using the Newton Millimeter[N*mm] for Torque. Newton Meter[N*mm], Newton Centimeter[N*mm], Kilonewton Meter[N*mm] are the few other units in which Bending Moment applied on Spring given Bending Stress can be measured.
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