Passive direction displacement dependent damping (D3) device

N. K. Hazaveh, G. Rodgers, J. Chase, S. Pampanin
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引用次数: 3

Abstract

Viscous fluid damping has been used worldwide to provide energy dissipation to structures during earthquakes. Semi-active dissipation devices have also shown significant potential to re-shape structural hysteresis behaviour and thus provide significant response and damage reduction. However, semi-active devices are far more complex and costly than passive devices, and thus potentially less robust over time. Ideally, a passive device design would provide the unique response behaviour of a semi-active device, but in a far more robust and low-cost device. This study presents the design, development and characterization of a passive Direction and Displacement Dependent viscous damping (D3) device. It can provide viscous damping in any single quadrant of the force-displacement hysteresis loop and any two in combination. Previously, this behaviour could only be obtained with a semi-active device. The D3 device is developed from a typical viscous damper, which is tested to evaluate the baseline of orifice sizing, force levels and velocity dependence. This prototype viscous damper is then modified in clear steps to produce a device with the desired single quadrant hysteresis loop. The overall results provide the design approach, device characterization and validation for this novel device design.
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被动方向位移相关阻尼(D3)装置
粘性流体阻尼已在世界范围内用于在地震期间为结构提供能量耗散。半主动耗散装置也显示出重塑结构磁滞行为的巨大潜力,从而提供显著的响应和减少损伤。然而,半主动装置远比被动装置复杂和昂贵,因此随着时间的推移,其鲁棒性可能会降低。理想情况下,无源器件设计将提供半主动器件的独特响应行为,但在一个更坚固和低成本的器件中。本研究介绍了被动方向和位移相关粘性阻尼(D3)装置的设计、开发和表征。它可以在力-位移滞后回路的任何单个象限以及任何两个象限的组合中提供粘性阻尼。以前,这种行为只能通过半主动装置获得。D3装置是由一个典型的粘性阻尼器开发的,该阻尼器经过测试以评估孔口尺寸、力水平和速度相关性的基线。然后,对这个原型粘性阻尼器进行明确的步骤修改,以生产出具有所需单象限磁滞回线的装置。总体结果为这种新型器件设计提供了设计方法、器件表征和验证。
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来源期刊
CiteScore
2.50
自引率
17.60%
发文量
14
期刊最新文献
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