Proceedings of the 12th Pacific Structural Steel Conference
巻, 号, ページ
出版年月
2019年11月9日
出版者
和文:
英文:
会議名称
和文:
英文:
12th Pacific Structural Steel Conference Steel Structures with Resilience and Sustainability
開催地
和文:
英文:
Tokyo
ファイル
アブストラクト
Studies showed that properly employed viscoelastic (VE) dampers can mitigate wind-induced vibrations of tall buildings. These devices work by absorbing kinetic energy and converting it to small amount of heat. Since VE dampers are temperature- and frequency-sensitive, increase of temperature results to decrease of VE damping properties. In their past studies on simple lap-type two layered VE dampers under long-duration loading, the authors experimentally and analytically showed the effects of heat generation and heat transfer. Heat was effectively dispersed to the surrounding air bringing the simple VE damper to thermal equilibrium. Nowadays, VE dampers are made of several thin layers of VE materials, and due to high computational cost in carrying-out finite element analysis, few analytical studies are done for full-scale multi-layered VE dampers. This paper addresses this matter by implementing the previously proposed three-dimensional model of the co-authors into a multi-layered VE damper under long-duration sinusoidal loading, and results are verified with experiment. It shows that the 3D-FEM technique can be used to predict the temperature-dependency of a multi-layered VE damper.
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