A New Passive-Active Isolator

新型被动-主动隔离器

• 批准号: 0900780
• 负责人: Faramarz Gordaninejad
• 金额: $ 20万
• 依托单位: Board of Regents, NSHE, obo University of Nevada, Reno
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0900780&HistoricalAwards=false
• 关键词: New; Passive; Active; Isolator

The goal of the proposed project is to study the feasibility of a new variable stiffness isolator and to understand its behavior. The proposed system can function in passive and active modes, is fail-safe, and is very similar to the conventional passive elastomeric bearings. The power requirement is very low, and the system can be battery operated. The new system offers both passive and controllable components. The objective of this research is to understand the performance of the proposed variable stiffness isolation bearing. Prototypes of this system will be designed, fabricated and tested. For the proof-of-concept of its effectiveness under seismic motions, the proposed isolator will be examined on a scaled model building. Theoretical analysis will be carried out to model and predict the performance of the proposed system. Materials development will be focused on elevated working temperature, moisture resistance, and enhanced durability.If successful, the proposed project will contribute to the advancement of passive-active protective systems for the control of large structures. Research in hazard mitigation of large structures is of high importance because it can significantly contribute to saving lives and resources. In recent years, considerable attention has been paid to enhancing the protection of civil infrastructure elements by taking advantage of new materials, high-tech devices, and advanced control methods. The activity will also provide advanced training in testing and analysis to the graduate student working on this project.

该项目的目标是研究一种新的变刚度隔振器的可行性，并了解其行为。 所提出的系统可以在被动和主动模式下工作，是故障安全的，并且非常类似于传统的被动弹性体轴承。 功率要求非常低，并且系统可以由电池供电。 新系统提供了无源和可控组件。 本研究的目的是了解所提出的变刚度隔震支座的性能。 该系统的原型将被设计，制造和测试。 为了验证其在地震运动下的有效性，将在比例模型建筑物上对所提出的隔离器进行检查。 理论分析将进行建模和预测所提出的系统的性能。 材料开发将集中在提高工作温度、防潮性和增强耐用性上。如果成功，拟议的项目将有助于推进用于控制大型结构的被动-主动保护系统。 大型结构减灾研究具有重要意义，因为它可以为拯救生命和资源做出重大贡献。 近年来，通过利用新材料、高科技设备和先进的控制方法，加强对民用基础设施要素的保护已受到相当大的重视。该活动还将为从事该项目的研究生提供测试和分析方面的高级培训。