Evaluation of the Modal Coupling Effect in Midstory Isolation Systems Based on Random Vibration Analysis

Table 1

The values of d.

Case	r2 = 0.7				r2 = 0.9
	r1 = 0.2	r1 = 0.5	r1 = 0.7	r1 = 0.8	r1 = 0.5	r1 = 0.7
d	0.18	0.19	0.22	0.28	0.24	0.26