212 Ketter Hall, North Campus, Buffalo, NY 14260

1

• 212 Ketter Hall, North Campus, Buffalo, NY 14260
  
• www.civil.buffalo.edu
• Fax [phone] Tel [phone] x 2400
• Control of Structural Vibrations
• Lecture 5
• Devices and Models (12)
• Metallic Dampers
• Instructor
• Andrei M. Reinhorn P.Eng. D.Sc.
• Professor of Structural Engineering

2
Metallic Hysteretic Dampers

• Models and Implemented Devices

3
Hysteretic Damping Devices
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Flexural Plate Device
Max stresses at all sections 1) Mx P x 2)
Wx (b/L )x t2 /6 3) fx 6 P / t2
(b/L) Stress constant at all sections
L
x
t
P
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Stresses in Plate Dampers
6
ADAS - Flour-Daniel Ltd
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ADAS Device in Structure
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ADAS - Flour-Daniel Ltd
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Application
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Flexural Conical Beam Device
11
T-ADAS - Metalic Damper
12
T-ADAS Device
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T-ADAS Device
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(No Transcript)
15
(No Transcript)
16
Sivaselvan-Reinhorn ModelMCEER Report
MCEER-99-0018
Model used in IDARC2DVer.5.0
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Sivaselvan Reinhorn, 1999
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Mathematical Model for Plate Damper
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Triangular Plate Metallic Element
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Triangular Plate Element
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Behavior of Metallic Damper
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Modeling Durability of Metallic Dampers
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Modelling of Structures with Additional
Hysteretic Dampers
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Additional Hysteretic Dampers
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(No Transcript)
26
(No Transcript)
27
(No Transcript)
28
(No Transcript)
29
Japanese Web Shear Device
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Lead Extrusion Device
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Lead Extrusion
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Lead Joint Damper
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Flexural Beam Device
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U Strip Device
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Yielding Steel Bracing SystemTyler, 1985, New
Zealand
36
Torsional Beam DeviceNew Zealand, Rocking
Bridge Peers
37
Friction (Hysteretic) Dampers

• Models and Implemented Devices