Parametric optimization of electromagnetic tuned inerter damper for structural vibration suppression

Abstract

Summary A novel dual‐functional inerter‐based damper, called electromagnetic tuned inerter damper (ETID), is presented in this paper for vibration control and energy harvesting. To evaluate the effectiveness of the ETID, the simplified model of ETID coupled with a single‐degree‐of‐freedom (SDOF) structure has been established. The H2 optimal design of the ETID‐SDOF system has been conducted, whose goal is to minimize the value of the root mean square (RMS) of the displacement and absolute acceleration of the primary structure. The analytical solutions of the dimensionless tuning parameters of the undamped ETID‐SDOF system have been derived. The control performance and robustness for the undamped SDOF system with ETID have been evaluated via numerical study compared with the undamped SDOF system with the tuned mass damper (TMD) system. The impact of the structural damping on the tuning parameters and performance indexes has also been investigated. Later, the performance of the optimal ETID‐SDOF system has been evaluated in the time domain via real earthquake excitations. The results show that the proposed optimal ETID‐SDOF system can sufficiently reduce the structural displacement or absolute acceleration and simultaneously harvest vibrational energy.

A variant design of tuned mass damper with negative stiffness for vibration control of a damped primary system

“…As usually done in the relevant literature for design issues, the adequate space to accommodate the TMD stroke is critical to guarantee the proper functioning of the devices 27,31–35,39–44 . Furthermore, the knowledge of the stroke length value leads to an estimate of the cost of both the spring and the damper connecting the two masses.…”

Application of electromagnetic tuned mass damper with flywheels for controlling building structure vibration

“…Luo et al 56 proposed an EM resonant shunt TMDI (ERS-TMDI), and their numerical results demonstrated that the inerter improved the control effectiveness of the ERS-TMD. Luo et al 57 also conducted parametric optimization of an EM-TID for controlling structural vibration. Salvi and Giaralis 58 proposed an energy harvesting-enabled TMDI, which comprises a TMD system, a linear motor, and an inerter.…”

“…proposed an EM resonant shunt TMDI (ERS‐TMDI), and their numerical results demonstrated that the inerter improved the control effectiveness of the ERS‐TMD. Luo et al 57 . also conducted parametric optimization of an EM‐TID for controlling structural vibration.…”

An integrated equivalent tuned‐mass‐inerter vibration absorber and its optimal design

“…16,17 Apart from the mechanical approaches, the hydraulic mechanism 18,19 is also adopted, which can achieve the inertial effect by enlarging the piston area or by decreasing the channel cross-section area. Furthermore, by means of electromagnetic approach, 20,21 the circuit composed of capacitors, inductors, and resistors assembled in a proper arrangement can also be used to offer an equivalent inertial effect in the mechanical device. Given the large inertial coefficient, the work efficiency of the vibration absorber is greatly improved, which helps to enhance the capacity of vibration control system.…”