Spring Mass System

Spring Mass System

To determine the damping coefficient of a single-degree of freedom system.

The experimental set up consists of

• Spring Mass Test rig- with frame, Mass and Spring.
• Accelerometer.
• Signal Conditioner.
• Computer based data acquisition system

Purpose: To Estimate of Damping Ratio:

The logarithmic decrement is estimated from the expression

Ϭ= (1/n) log (A₁/A_n)

Damping ratio  ε= / (2Ï€)