scholarly journals Application of eddy current damper technology for passive tuned mass damper systems within footbridges

2017 ◽  
Vol 199 ◽  
pp. 1804-1809 ◽  
Author(s):  
David Saige ◽  
Jürgen Engelhardt ◽  
Sebastian Katz
Keyword(s):  
Eddy Current ◽  
Tuned Mass Damper ◽  
Mass Damper ◽  
Eddy Current Damper

Improving performance of a super tall building using a new eddy-current tuned mass damper

2016 ◽  
Vol 24 (3) ◽  
pp. e1882 ◽  
Author(s):  
Xilin Lu ◽  
Qi Zhang ◽  
Dagen Weng ◽  
Zhiguang Zhou ◽  
Shanshan Wang ◽  
...  
Keyword(s):  
Eddy Current ◽  
Tuned Mass Damper ◽  
Tall Building ◽  
Mass Damper

scholarly journals Application of an Eddy Current-Tuned Mass Damper to Vibration Mitigation of Offshore Wind Turbines

Energies ◽  
2018 ◽  
Vol 11 (12) ◽  
pp. 3319 ◽  
Author(s):  
Jijian Lian ◽  
Yue Zhao ◽  
Chong Lian ◽  
Haijun Wang ◽  
Xiaofeng Dong ◽  
...  
Keyword(s):  
Eddy Current ◽  
Wind Farm ◽  
Permanent Magnets ◽  
Tuned Mass Damper ◽  
Offshore Wind ◽  
Offshore Wind Turbine ◽  
Small Scale ◽  
Vibration Mitigation ◽  
Mass Damper ◽  
Extreme Winds

Offshore wind turbine (OWT) structures are highly sensitive to complex ambient excitations, especially extreme winds. To mitigate the vibrations of OWT structures under windstorm or typhoon conditions, a new eddy current with tuned mass damper (EC-TMD) system that combines the advantages of the eddy current damper and the tuned mass damper is proposed to install at the top of them. In the present study, the electromagnetic theory is applied to estimate the damping feature of the eddy current within the EC-TMD system. Then, the effectiveness of the EC-TMD system for vibration mitigation is demonstrated by small-scale tests. Furthermore, the EC-TMD system is used to alleviate structural vibrations of the OWT supported by composite bucket foundations (CBF) under extreme winds at the Xiangshui Wind Farm of China. It is found that the damping of the EC-TMD system can be ideally treated as having linear viscous damping characteristics, which are influenced by the gaps between the permanent magnets and the conductive materials as well as the permanent magnet layouts. Meanwhile, the RMS values of displacements of the OWT structure can be mitigated by 16% to 28%, and the acceleration can also be reduced significantly. Therefore, the excellent vibration-reducing performance of the EC-TMD system is confirmed, which provides meaningful guidance for application in the practical engineering of OWTs.

scholarly journals Experimental Study on Robustness of an Eddy Current-Tuned Mass Damper

2017 ◽  
Vol 7 (9) ◽  
pp. 895 ◽  
Author(s):  
Junda Chen ◽  
Guangtao Lu ◽  
Yourong Li ◽  
Tao Wang ◽  
Wenxi Wang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Eddy Current ◽  
Tuned Mass Damper ◽  
Mass Damper

scholarly journals Study on Adaptive-Passive and Semi-Active Eddy Current Tuned Mass Damper with Variable Damping

2018 ◽  
Vol 10 (2) ◽  
pp. 99 ◽  
Author(s):  
Weixing Shi ◽  
Liangkun Wang ◽  
Zheng Lu ◽  
Hui Gao
Keyword(s):  
Eddy Current ◽  
Tuned Mass Damper ◽  
Mass Damper ◽  
Variable Damping

scholarly journals Studi Eksperimental Pengaruh Panjang Penyangga Magnet pada Getaran Batang dengan Eddy Current Tuned Mass Damper

2021 ◽  
Vol 2 (1) ◽  
pp. 1-6
Author(s):  
Rizal Efendi ◽  
Ardi Noerpamoengkas ◽  
Hasan Syafik Maulana
Keyword(s):  
Eddy Current ◽  
Tuned Mass Damper ◽  
Mass Damper

Getaran dengan amplitudo berlebih bersifat destruktif dan perlu direduksi. Pada penelitian ini, batang kantilever utama dieksitasi sehingga bergetar. Salah satu teknik peredam getaran yang diaplikasikan adalah dengan menggunakan Eddy Current Tuned Mass Damper (ECTMD). Batang kantilever tambahan diberikan untuk menyangga magnet dengan variasi panjang 100 mm, 150 mm, 200 mm. Arus Eddy ditimbulkan dengan menambah pelat tembaga di batang kantilever utama. Respon peralihan maksimal dan amplitudo respon tunak diperoleh. Batang kantilever penyangga magnet ini semakin panjang menyebabkan respon peralihan maksimal semakin kecil dan amplitudo respon tunak semakin kecil. Akibatnya, penurunan respon dibandingkan tanpa ECTMD juga semakin naik dan transmissibilitas semakin turun.

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