Table 2.

First mathematical model parameters for the symmetric behavior in the shear/roll direction^∗.

Isolator #	$k_e$ (N/mm)	$x_y$ (mm)	$Q$ (N)	$\alpha$
1	205.15	0.39	60.0	0.2448
2	151.69	0.4	47.95	0.2065
3	105.3	0.52	43.78	0.1966
4	103.37	0.55	47.69	0.166
5	300.35	0.38	93.4	0.1767
6	270.65	0.37	86.29	0.132
7	350.64	0.34	88.49	0.2533
8	310.45	0.34	90	0.1361
9	290.33	0.38	99.15	0.1077

^∗The Bouc-Wen model parameters are $A=1,\beta =0.1,\gamma =0.9,\eta =2$ for all isolators.