Resonant Viscous Damping Device for Earthquake-Resistant Structures

抗震结构共振粘滞阻尼装置

• 批准号: 9260195
• 负责人: Warren Gibson
• 金额: $ 5万
• 依托单位: CSA Engineering Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-01-01 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9260195&HistoricalAwards=false
• 关键词: Resonant; Viscous; Damping; Device; Earthquake

This Phase I SBIR project studies the use of damping elements for earthquake resistance of flexible frame buildings. A new type of passive damping mechanism is studied that is potentially superior to conventional damping mechanisms: a resonant viscous damper, or RVD. The RVD will be placed in the same locations as conventional earthquake dampers, but because it will possess an internal resonance tuned to a building's fundamental resonant frequency. As a result, it will offer much higher levels of passive damping. The objective of this project is to develop a practical, reliable, and economical damping device that can be applied to a broad range of medium- sized buildings. The Phase I goal is to validate the RVD concept by both analysis and testing of an engineering model. Current earthquake dampers are designed to provide 20-30% structural damping. If successful, the RVD will provide over twice this damping in the primary mode of a building without any large increases in frame stiffness nor any large added masses. The RVD will also reduce motion due to wind sway. An RVD will offer designers in any field of structural dynamics (civil, aerospace, mechanical) an attractive alternative solution to many vibration suppression problems.

第一阶段SBIR项目研究使用 抗震阻尼元件 灵活的框架建筑。 一种新型的被动式 阻尼机制进行了研究，这是潜在的 优于传统阻尼机制的上级：a 共振粘滞阻尼器或RVD。 差饷物业估价署会 被放置在与传统的相同的位置， 地震阻尼器，但因为它将拥有一个 内部共振调谐到建筑物的 基本共振频率 因此，它将 提供更高水平的被动阻尼。 该项目的目标是开发一个 实用、可靠、经济的减震装置 它可以应用于各种介质- 大小的建筑物。 第一阶段的目标是验证 RVD概念的分析和测试， 工程模型 当前的地震阻尼器 设计为提供20-30%的结构阻尼。 如果成功，差饷物业估价署将提供超过两倍的服务， 建筑物主振型的阻尼， 框架刚度的任何大的增加， 增加了质量。 RVD还将减少运动 由于风的摇摆。 RVD将为设计师提供 结构动力学的任何领域（民用，航空航天， 机械）的一个有吸引力的替代解决方案， 许多振动抑制问题。