Application of Experimental Modal Analysis to Determine Damping Properties for Stacked Corrugated Boxes

Table 1

Damping ratio calculations with low-pass filter.

Damping ratio calculations with low-pass filtered data using 𝛿 =ln ((𝐴1sin(𝜔𝑑𝑡1))/(𝐴2sin(𝜔𝑑𝑡2)))
	Average decrement	Minimum decrement	Maximum decrement	Average damping ratio
Acceleration data	0.4644	0.0390	0.6302	𝜁 = 0.0737
Displacement data	0.2147	0.2085	0.2209	𝜁 = 0.0342