Yes, but it involves a second order differential equation. Using the mass, spring constant and damping constant any physical object or assembly's damping ratio can be calculated. In the design of the vehicle the damping ratio was determined by the engineers at the automaker depending on the type of car. A sports car would have a higher damping ratio (maybe 0.7 or so) than a cushy luxury car. Over time the damping ratio will change as the components age. The most obvious is the bouncy feeling when you don't replace your struts or shocks as intended. That's when your tight sports car's suspension starts to behave like a 70's Buick. You just lowered your damping ratio without knowing it.
1/sq. root of gain
Geometric damping is also called radiation damping. It is defined as energy radiation into a surrounding medium. Damping is defined as energy dissipation property of structures and materials that are put through time-variable loading.
Decibel is a factor or a ratio and no unit. If you have 1 volt and you damp it to 1/4 volt then you will get a damping of 12 dB. Voltage daming = 20×log (1/4) = (-)12 dB.
Amplitude ratio to dB conversion:For amplitude of waves like voltage, current and sound pressure level:GdB = 20 log10(A2 / A1)A2 is the amplitude level.A1 is the referenced amplitude level.GdB is the amplitude ratio or gain in dB.dB to amplitude ratio conversion:A2 = A1 · 10(GdB / 20)A2 is the amplitude level.A1 is the referenced amplitude level.GdB is the amplitude ratio or gain in dB.
the further the frequency from the resonant one, greater would be the damping effect, hence greater the sharpness the lowre is the damping effect
Yes, but it involves a second order differential equation. Using the mass, spring constant and damping constant any physical object or assembly's damping ratio can be calculated. In the design of the vehicle the damping ratio was determined by the engineers at the automaker depending on the type of car. A sports car would have a higher damping ratio (maybe 0.7 or so) than a cushy luxury car. Over time the damping ratio will change as the components age. The most obvious is the bouncy feeling when you don't replace your struts or shocks as intended. That's when your tight sports car's suspension starts to behave like a 70's Buick. You just lowered your damping ratio without knowing it.
1/sq. root of gain
the fine boring spindle using CBN tools creates chatter . is it because less damping ratio of spindle? the bore is 100 mmdia . L/D ratio is 5
Transformer Z-ratio = (Zpri / Zsec) = (Vpri / Vsec)2 It could also be the damping factor DF = Zload / Zsource The damping factor DF is the load impedance Zload (input impedance) divided by the the source impedance Zsource (output impedance).
Damping is the resistance offered by a body when a system is in vibration. But the basic use of a damper(damping) is to help reduce the oscillations or vibrations.we can also conclude that we use damping to slow down the effect of a moving part.Damping controls the amplitude of vibrations just to avoid resonance conditions.
Spiky or wavy surfaces have the effect of damping sound. Snow is spiky if you look through a microscope at it.
Jae Kyung Cha has written: 'Effect of loading rate on damping and stiffness in nailed joints' -- subject(s): Timber joints, Damping (Mechanics)
10 dB gain means a voltage ratio of 3.16227766 to 1.
Chu n Chou has written: 'Effect of drying on damping and stiffness of nailed joints between wood and plywood' -- subject(s): Drying, Lumber, Damping (Mechanics)
It is the opposite of normal damping (oscillation decreases), so in negative damping to get even bigger oscillation.
Negative decibels mean damping (loss) and positive decibels mean amplification (gain).