关键词:
eddy current
finite element
seismic damping
torsion response
tuned mass damper
摘要:
Both ground motion and structure have multidimensional characteristics, and the structure will not only generate translational motion but also torsional motion under seismic action, and the traditional tuned mass dampers generally ean only control die 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) was proposed, which could simultaneously control the translational and torsional responses of the structure. On the basis of analyzing the intrinsic structural features of the dampers and deriving the formula for calculating the damping force, a typical eccentric structure was taken as the analysis object, and the damping control efficiency of the MEC-TMD was compared with that of the traditional TMD by using the 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 the 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 type of damper has positive significance and application value for the effective control of torsional response of structures. © 2025 Chinese Vibration Engineering Society. All rights reserved.