Developing the Next Generation of Cost-Effective High Performance Damping Systems for Seismic and Wind Hazards Mitigation

高性能的结构系统阻尼装置应该是坚固的，可靠的，并提供大的阻尼力，以有效地减轻地震和风荷载的影响。采用鼓式制动器技术的半主动摩擦修正装置具有在结构系统运动速度较小的情况下提供较大阻尼力的潜力。建议在实验室中开发这样的装置，并评估其在动态载荷下的性能。如果实验室模型被发现是可行的，原型可以在未来进行大规模的测试，其在实践中的efficiency.The研究建议：（1）构建一个实验室规模的修改摩擦装置;（2）表征其动态行为;（3）评估其作为阻尼器在多层建筑物中使用的成本效益。该设备的关键部件是强大的鼓式制动技术和基于电池的半主动控制。实验室测试将涉及评估在不同的控制输入和结构系统的运动的阻尼力之间的关系。本文将以数值方法探讨在地震和风荷载作用下，阻尼装置在建筑框架中的有效性。此外，将进行分析以评估器械的成本效益。工业公司的机械制造和施工专业知识将有助于建立阻尼装置的功效。

High performance damping devices for structural system should be robust, reliable, and deliver large damping force to be effective at mitigating earthquake and wind loading impact. A semi-active modified friction device using technology of drum brakes has a potential of providing large damping force under small velocity of the structural system movement. It is proposed to develop such a device in a laboratory and assess its performance under dynamic loading. If the laboratory model is found to be viable, a prototype can be fabricated in the future to perform large scale testing for its efficacy in practice.The research proposes to: (1) construct a laboratory scale modified friction device; (2) characterize its dynamic behavior; and (3) assess its cost-effectiveness for use as dampers in multi-story buildings. The key components of the device are robust drum-brake technology and battery-based semi-active control. The laboratory tests will involve assessing relationship between the damping force at varying control inputs and movement of the structural system. Effectiveness of the damping device in building frames under earthquake and wind loading will be pursued numerically. In addition, analyses will be performed to assess cost-effectiveness of the device. Mechanical fabrication and construction expertise of an industrial company will assist in establishing efficacy of the damping device.