Estimation of Additional Equivalent Damping Ratio of the Damped Structure Based on Energy Dissipation

Table 7

Additional EDRs obtained by different approaches.

Case
NW1	0.085	0.118	0.213
NW2	0.055	0.068	0.185
NW3	0.053	0.074	0.204
NW4	0.053	0.075	0.170
NW5	0.061	0.078	0.184
AW1	0.079	0.083	0.210
AW2	0.059	0.073	0.201
Average	0.063	0.081	0.195

Note: is the final value of , is the additional EDR induced by the dampers during the duration , and is the value obtained from the strain energy method.