Lab Mass Effect Vibration

Auto Tech 4VD3 LAB 1 Effect of the salient unwashed on Damping Characteristics Free Vibration | Objective To infer the effects of damping on the vibration and the effects of multitude on the damping characteristics Apparatus * Aluminum Frame * Vibrating Beam * outpouring * Spring Attachments * Damper * Damper Attachments * 3 C- clamps (qty 3) * ADXL345 analog accelerometer development identity card * Micro SD circular & card reader * abdominal aortic aneurysm batteries (qty 2) * Weight Scale Introduction Logarithmic step-down, (?) is used to heart the damping ratio of an under-damped system in the time domain. The logarithmic step-down is the natural log of the ratio of the amplitudes of the first two attendant peaks Logarithmic decrement is prone by ?=lnX1X2 If we consider the tusk in amplitude in n successive cycles then the log decrement is given by ?=1nlnX0Xn The damping ratio i s a parameter, usually denoted by ? (zeta) that characterizes the frequency response of a mho prescribe ordinary differential equation.

Damping ratio (?) stick out be compute by ?=?2? Oscillation frequency (fn) can be compute by fn=1T Angular velocity ?n can be cipher by ?n=2?fn Damping coefficient (c) can be calculated by c=2??nm This accelerometer scripts data in lowest material round and it has a 10-bit root. The range for this device is ±4g. This means that the resolution is: 210=1024 bits ±4g = 8g 1024 bits/8g = 128bits/g Procedure fragmentize 1: No Damper given over: (If your lab equipment has the damper already attached, please do Part 2 first, and come back to Part 1 afterwards) 1! . appreciate the mass of the vibrating beam and record it 2. Measure the mass of the attachments on the beam and record it 3. Measure the mass of the clamps and record it Items| Mass (kg)| Mass of Aluminum Beam| 330 g| 1/3 Mass of Aluminum Beam| 110 g| repel Assembly & U-clamp| 140 g| 1 - C clamp (3 Black ones)| 450 g...If you want to get a upright essay, order it on our website: OrderEssay.net

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