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0 2 4 6 8 10 12 14 16 18 20!3
!2
!1
0
1
2
3
Accele
ration (
g)
Time (sec)
Shake TableDIS Isolated Floor
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(1) The axial load capacities correspond to maxiumum displacements based on design limits of 250% rubber shear strain or 2/3 the isolator diameter. An isolators actual displace-ment and load capacity are dependent on the rubber modulus and number of rubber layers.
(2) Rubber Shear Moduli (G) are available from 55 psi to 100 psi.
(3) For analytical bilinear modeling of the Elastic Stiffness use Ke=10*Kd.
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(1) The axial load capacities correspond to maxiumum displacements based on design limits of 250% rubber shear strain or 2/3 the isolator diameter. An isolators actual displace-ment and load capacity are dependent on the rubber modulus and number of rubber layers.
(2) Rubber Shear Moduli (G) are available from 0.38 N/mm2 to 0.70 N/mm2.
(3) For analytical bilinear modeling of the Elastic Stiffness use Ke=10*Kd.
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)577
)87
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7
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:7
97
87
577
)5
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0.25 g
0.5 g
0.75 g
1.0 g
1 sec 2 sec 3 sec
IncreasingDamping
Fundamental Period of the Structure
Acc
eler
atio
n Re
spon
se S
pect
rum
Period Shift
1 sec 2 sec 3 sec
IncreasingDamping
Fundamental Period of the Structure
Period Shift
Dis
plac
emen
t
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