Research Article
Jan 1980
Damping of Frames with Constrained Viscoelastic Layers
Authors: Dario A. Gasparini, M.ASCE, Amitabha Deb Chaudhury, and Lawrence W. Curry, AM.ASCEAuthor Affiliations
Publication: Journal of the Structural Division
Volume 106, Issue 1
Abstract
The damping of a steel braced frame with a vertical layer of visco-elastic material is quantified by computing steady-state responses to harmonic lateral loadings. Viscoelastic constitutive equations are used to model all materials. It is found that the constrained viscoelastic layer significantly increases the damping of the frame while causing a tolerable loss in lateral stiffness. The static behavior of the frame is found to be analogous to that of coupled shear walls. It is observed that weighing each material's damping contribution by its strain energy and summing contributions to obtain the total damping, significantly overestimates the true damping of the composite frame. In general, it is determined that such a method is inappropriate for series systems in which some materials are highly damped while others are only slightly damped. Issues other than damping which relate to the feasibility of the concept are briefly considered.
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Published In
Journal of the Structural Division
Volume 106 • Issue 1 • January 1980
Pages: 115 - 131
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Jan 1980
Published online: Feb 1, 2021
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Authors
Affiliations
Dario A. Gasparini, M.ASCE
Asst. Prof. of Civ. Engrg., Case Western Reserve Univ., Cleveland, Ohio.
Amitabha Deb Chaudhury
Grad. Student, Dept. of Civ. Engrg., Case Western Reserve Univ., Cleveland, Ohio.
Lawrence W. Curry, AM.ASCE
Grad. Student, Dept. of Civ. Engrg., Case Western Reserve Univ., Cleveland, Ohio.
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