Smart damper using sliding friction of aramid brake lining and self-centering of rubber springs

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• 作者：Kyuho Jeong ; Eunsoo Choi ; Sung-Yong Back…
• 关键词：smart damper ; sliding friction ; pre ; compression ; rubber spring ; self ; centering
• 刊名：International Journal of Steel Structures
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：16
• 期：4
• 页码：1239-1250
• 全文大小：
• 刊物类别：Engineering
• 刊物主题：Civil Engineering; Structural Mechanics; Materials Science, general;
• 出版者：Korean Society of Steel Construction
• ISSN：2093-6311
• 卷排序：16

文摘

The purpose of this study is to develop a smart damper with flag-shaped behavior by using the sliding friction of aramid brake lining and the restoring capacity of pre-compressed rubber springs. For this purpose, the friction force of aramid brake lining pressed by bolts was used along with polyurethane rubbers, each with a length of 80 mm, a diameter of 95 mm, and a circular hole of 37 mm. In the experiments, loading frequency and torque force were considered. The loading frequency varied from 0.1 to 2.0 Hz, and frictional force was controlled by variable bolt torque force. The tests were conducted to demonstrate that the clamping force by the bolts could provide normal force to frictional material. The friction force by the aramid brake lining sliding was tested, followed by the pre-compressed rubber springs' behavior. Afterward, a damper combining the two components was tested to verify flag-shaped behavior by using a dynamic actuator, and the damping ratios were evaluated from the hysteretic curves. The behavior of the damper closely matched flag-shaped behavior, resulting in self-centering and energy dissipation capacity.