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Shock and Vibration
/
2021
/
Article
/
Fig 3
/
Research Article
Evaluation of the Modal Coupling Effect in Midstory Isolation Systems Based on Random Vibration Analysis
Figure 3
Modal participating mass ratios with various
ε
ls
(
ε
us
= 4): (a)
r
2
= 0.8 and (b)
r
1
= 0.7.
(a)
(b)