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

Table 2

Additional EDRs obtained by the strain energy method and proposed method for different cases.

Case	Strain energy method			Proposed method based on energy dissipation
		0.048	0.193	0.774	0.048	0.096	0.192
	0.024	0.097	0.389	0.048	0.097	0.194
	0.012	0.049	0.195	0.049	0.097	0.195
AWX	0.046	0.084	0.240	0.048	0.097	0.194
NRX	0.037	0.087	0.244	0.048	0.097	0.195

Note. stands for the natural period of the SDOF systems, and stands for the period of excitation period of the sine waves.