Stochastic Response Characteristic and Equivalent Damping of Weak Nonlinear Energy Dissipation System under Biaxial Earthquake Action

Table 1

Results comparison of the frequency domain method and the proposed method in this paper.

Damping coefficient /N⋅s/m	Approximate calculation formula of frequency domain method	Method proposed in this paper
	Displacement standard deviation/m ()	Displacement standard deviation/m ()	Relative error/%
10	2.7	3.897	44.3
15	2.950	3.867	31.1
20	2.950	3.838	30.1
25	3.032	3.809	25.6
30	3.095	3.778	22.1
35	3.145	3.751	19.3
40	3.186	3.724	16.9
45	3.223	3.695	14.6