Analysis and the Design of Multi-Layer Viscoelastic (V.E.) Dampers for Tall Structures

by Parviz Mahmoodi, 3M, United States,
Carla J. Keel, 3M, United States,



Document Type: Proceeding Paper

Part of: Structural Design, Analysis and Testing

Abstract:

Vibrational motion of tall buildings can be damped by employment of viscoelastic passive dampers in the structure. The type of dampers selected depend on locations where relative displacements, due to building motion, are available. Multi-layer viscoelastic dampers are designed to increase the overall damping and accommodate very large displacements. Transfer of thermal energy, produced by the shearing action in the viscoelastic layer of the damper, is dependent on the thickness of the viscoelastic material and its other dimensions. Since the transfer of heat is inversely proportional to the thickness of viscoelastic layer therefore the rate of temperature rise in the V.E. will become a concern. In order to address this problem, multi-layer dampers with heat transfer fins, are designed. Heat transfer fins reduce the heat buildup and thus slow temperature rise in the viscoelastic layers.

Subject Headings: Damping | Viscoelasticity | Heat transfer | High-rise buildings | Vibration | Displacement (mechanics) | Buildings

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