Logarithmic Decrement using Natural Frequency Solution

STEP 0: Pre-Calculation Summary
Formula Used
Logarithmic Decrement = (Frequency Constant for Calculation*2*pi)/(sqrt(Natural Circular Frequency^2-Frequency Constant for Calculation^2))
δ = (a*2*pi)/(sqrt(ωn^2-a^2))
This formula uses 1 Constants, 1 Functions, 3 Variables
Constants Used
pi - Archimedes' constant Value Taken As 3.14159265358979323846264338327950288
Functions Used
sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)
Variables Used
Logarithmic Decrement - Logarithmic decrement is defined as the natural log of the ratio of the amplitudes of any two successive peaks.
Frequency Constant for Calculation - (Measured in Hertz) - The Frequency Constant for Calculation is the constant whose value is equal to the damping coefficient divided by twice of suspended mass.
Natural Circular Frequency - (Measured in Radian per Second) - Natural Circular Frequency is a scalar measure of rotation rate.
STEP 1: Convert Input(s) to Base Unit
Frequency Constant for Calculation: 0.2 Hertz --> 0.2 Hertz No Conversion Required
Natural Circular Frequency: 21 Radian per Second --> 21 Radian per Second No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
δ = (a*2*pi)/(sqrt(ωn^2-a^2)) --> (0.2*2*pi)/(sqrt(21^2-0.2^2))
Evaluating ... ...
δ = 0.0598425740788584
STEP 3: Convert Result to Output's Unit
0.0598425740788584 --> No Conversion Required
FINAL ANSWER
0.0598425740788584 0.059843 <-- Logarithmic Decrement
(Calculation completed in 00.004 seconds)

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National Institute Of Technology (NIT), Hamirpur
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9 Frequency of Free Damped Vibrations Calculators

Logarithmic Decrement using Natural Frequency
Go Logarithmic Decrement = (Frequency Constant for Calculation*2*pi)/(sqrt(Natural Circular Frequency^2-Frequency Constant for Calculation^2))
Logarithmic Decrement using Circular Damping Coefficient
Go Logarithmic Decrement = (2*pi*Damping Coefficient)/(sqrt(Critical Damping Coefficient^2-Damping Coefficient^2))
Condition for Critical Damping
Go Critical Damping Coefficient = 2*Mass Suspended from Spring*sqrt(Stiffness of Spring/Mass Suspended from Spring)
Logarithmic Decrement using Circular Damped Frequency
Go Logarithmic Decrement = Frequency Constant for Calculation*(2*pi)/Circular Damped Frequency
Damping Factor given Natural Frequency
Go Damping Ratio = Damping Coefficient/(2*Mass Suspended from Spring*Natural Circular Frequency)
Critical Damping Coefficient
Go Critical Damping Coefficient = 2*Mass Suspended from Spring*Natural Circular Frequency
Amplitude Reduction Factor
Go Amplitude Reduction Factor = e^(Frequency Constant for Calculation*Time Period)
Logarithmic Decrement
Go Logarithmic Decrement = Frequency Constant for Calculation*Time Period
Damping Factor
Go Damping Ratio = Damping Coefficient/Critical Damping Coefficient

Logarithmic Decrement using Natural Frequency Formula

Logarithmic Decrement = (Frequency Constant for Calculation*2*pi)/(sqrt(Natural Circular Frequency^2-Frequency Constant for Calculation^2))
δ = (a*2*pi)/(sqrt(ωn^2-a^2))

What is damped free vibration?

Damped vibration occurs when the energy of a vibrating system is gradually dissipated by friction and other resistances, the vibrations are said to be damped. The vibrations gradually reduce or change in frequency or intensity or cease and the system rests in its equilibrium position.

How to Calculate Logarithmic Decrement using Natural Frequency?

Logarithmic Decrement using Natural Frequency calculator uses Logarithmic Decrement = (Frequency Constant for Calculation*2*pi)/(sqrt(Natural Circular Frequency^2-Frequency Constant for Calculation^2)) to calculate the Logarithmic Decrement, The Logarithmic Decrement using Natural Frequency formula is defined as the natural log of the ratio of the amplitudes of any two successive peaks. Logarithmic Decrement is denoted by δ symbol.

How to calculate Logarithmic Decrement using Natural Frequency using this online calculator? To use this online calculator for Logarithmic Decrement using Natural Frequency, enter Frequency Constant for Calculation (a) & Natural Circular Frequency n) and hit the calculate button. Here is how the Logarithmic Decrement using Natural Frequency calculation can be explained with given input values -> 0.005984 = (0.2*2*pi)/(sqrt(21^2-0.2^2)).

FAQ

What is Logarithmic Decrement using Natural Frequency?
The Logarithmic Decrement using Natural Frequency formula is defined as the natural log of the ratio of the amplitudes of any two successive peaks and is represented as δ = (a*2*pi)/(sqrt(ωn^2-a^2)) or Logarithmic Decrement = (Frequency Constant for Calculation*2*pi)/(sqrt(Natural Circular Frequency^2-Frequency Constant for Calculation^2)). The Frequency Constant for Calculation is the constant whose value is equal to the damping coefficient divided by twice of suspended mass & Natural Circular Frequency is a scalar measure of rotation rate.
How to calculate Logarithmic Decrement using Natural Frequency?
The Logarithmic Decrement using Natural Frequency formula is defined as the natural log of the ratio of the amplitudes of any two successive peaks is calculated using Logarithmic Decrement = (Frequency Constant for Calculation*2*pi)/(sqrt(Natural Circular Frequency^2-Frequency Constant for Calculation^2)). To calculate Logarithmic Decrement using Natural Frequency, you need Frequency Constant for Calculation (a) & Natural Circular Frequency n). With our tool, you need to enter the respective value for Frequency Constant for Calculation & Natural Circular Frequency 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 Logarithmic Decrement?
In this formula, Logarithmic Decrement uses Frequency Constant for Calculation & Natural Circular Frequency. We can use 3 other way(s) to calculate the same, which is/are as follows -
  • Logarithmic Decrement = Frequency Constant for Calculation*Time Period
  • Logarithmic Decrement = Frequency Constant for Calculation*(2*pi)/Circular Damped Frequency
  • Logarithmic Decrement = (2*pi*Damping Coefficient)/(sqrt(Critical Damping Coefficient^2-Damping Coefficient^2))
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