Novel multidimensional eddy current tuned mass damper and structural seismic control research

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Journal of Vibration and Shock ›› 2025, Vol. 44 ›› Issue (10) : 233-240.

EARTHQUAKE SCIENCE AND STRUCTURE SEISMIC RESILIENCE

Novel multidimensional eddy current tuned mass damper and structural seismic control research

SONG Jianqiao1, LI Hongnan2, ZHANG Hao*1, FU Xing2

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Abstract

Both ground motion and structure have multidimensional characteristics, and the structure will not only generate translational motion but also torsion under seismic action, and the traditional tuned mass dampers generally can only control the translational motion of the structure, but not the torsional response of the structure effectively. Therefore, a new type of multidimensional eddy current tuned mass dampers (MEC-TMD) is proposed in this paper, which can simultaneously control the translational and torsional responses of the structure. On the basis of analyzing the intrinsic structural form of the dampers and deriving the formula for calculating the damping force, a typical eccentric structure is taken as the research object, and the damping control efficiency of the MEC-TMD is compared with that of the traditional TMD by using finite element numerical simulation method considering the effects of ground vibration at different sites, so as to preliminarily validate the effectiveness of the MEC-TMD proposed in this paper. The results show that the proposed MEC-TMD has good control effect on both translational and torsional response of the structure under seismic action, and the development of this damper has positive significance and application value for the effective control of torsional response of the structure.

Key words

eddy current / tuned mass damper / torsion response / finite element / seismic damping

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SONG Jianqiao1, LI Hongnan2, ZHANG Hao1, FU Xing2. Novel multidimensional eddy current tuned mass damper and structural seismic control research[J]. Journal of Vibration and Shock, 2025, 44(10): 233-240

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