Development of an Electromagnetic Shape Memory Alloy Friction Dammper for Civil Infrastructures

该奖项是来自纽约城市学院（CCNY）、东京大学和日本京都大学的研究人员之间的合作研究。 该项目的目标是开发一种新型先进的半主动电磁形状记忆合金摩擦阻尼器，用于保护建筑物和其他民用基础设施免受强风和地震的影响。新型半主动电磁形状记忆合金摩擦阻尼器与目前正在开发的其他半主动控制系统相比具有显著的优势和潜力。该项目的具体目标是：（i）开发半主动电磁摩擦阻尼器，（ii）开发半主动电磁形状记忆合金摩擦阻尼器，（iii）证明在（i）和（ii）中开发的所提出的先进半主动摩擦阻尼器的性能，并在纽约城市学院的1/4比例的5层建筑模型振动台上验证了理论结果，以及（iv）在日本京都防灾研究所的一座全尺寸5层框架建筑上演示所提出的半主动摩擦阻尼器的应用。其中提到，拟议研究的预算不包括制造拟议的半主动电磁形状记忆合金摩擦阻尼器的成本。将利用纽约（PSC-CUNY）专业人员代表大会的小额研究赠款和PI的启动资金制造用于1/4比例和全尺寸试验的拟议阻尼器装置。拟研制的半主动电磁形状记忆合金摩擦阻尼器具有固有的非线性。将研究和开发有效和实用的控制策略，特别是在近场地震的需求方面。该装置不仅适用于新的建筑物，也适用于老化结构的改造。该研究项目的成果有望为民用基础设施的自适应介质保护系统的技术发展做出重大贡献。该研究项目在城市防震减灾方面的效益不仅限于美国和日本，而且在世界上许多国家都有。

This award is a collaborative research among researchers from the City College of New York (CCNY), the University of Tokyo, and the Kyoto University, Japan. The objective of this project is to develop a new and advanced semi-active electromagnetic shape-memory alloy friction damper for protecting buildings and other civil infrastructures against strong winds and earthquakes. The new semi-active electromagnetic shape-memory alloy friction damper to be developed has significant advantages and potential over other semi-active control systems currently under development. Specific objectives of this project are: (i) to develop a semi-active electromagnetic friction damper, (ii) to develop a semi-active electromagnetic shape-memory alloy friction damper, (iii) to demonstrate the performance of the proposed advanced semi-active friction dampers developed in (i) and (ii), and to verify the theoretical results using a 1/4 scaled 5-story building model on the shaking table at the City College of New York, and (iv) to demonstrate the application of the proposed semi-active friction dampers on a full-scale 5-story frame building at the Disaster Prevention Research Institute, Kyoto, Japan. It is mentioned that the budget for the proposed research doesn't include the cost to manufacture the proposed semi-active electromagnetic shape-memory alloy friction damper. The proposed damper device for the 1/4 scaled and full-scale testing will be manufactured using small research grants from the Professional Staff Congress of the City University of New York (PSC-CUNY) and the start-up funds of the PI. The semi-active electromagnetic shape-memory alloy friction damper to be developed is inherently nonlinear. Effective and practical control strategies will be investigated and developed, in particular with respect to the demand of near-field earthquakes.The device is applicable not only to the new constructions but also to the retrofit of deteriorated structures. The results of this research project are expected to make a significant advancement for the state-of-the-technology in auto-adaptive media based protective systems for civil infrastructures. The benefit derived from this research project in urban earthquake disaster mitigation is not limited to US and Japan, but alsomany countries in the world.