scholarly journals Passive vibration control in a civil structure: Experimental results

2019 ◽  
Vol 52 (7-8) ◽  
pp. 938-946 ◽  
Author(s):  
Josué Enríquez-Zárate ◽  
Hugo Francisco Abundis-Fong ◽  
Ramiro Velázquez ◽  
Sebastián Gutiérrez
Keyword(s):  
Vibration Control ◽  
Structural Control ◽  
Passive Control ◽  
Tuned Mass Damper ◽  
Experimental Results ◽  
Structural Vibration ◽  
Control Technique ◽  
Primary System ◽  
Vibration Absorption ◽  
Mass Damper

The problem of vibrations in civil structures is common; nevertheless, its negative effects can be significantly reduced using structural control methods with intention of maintaining structural welfare as much as possible. This work deals with the study of structural vibration control in a model of a civil-like structure, which consists of three-level building with a tuned mass damper implemented as a passive vibration absorber, mounted on the top of the structure, to attenuate the harmonic vibrations provided by an electromagnetic actuator connected at the base of the primary system. The action of the tuned mass damper is evaluated from an energy approach. The dissipation of energy in the overall system is conducted in an experimental way, where the passive control technique is designed to minimize the undesirable forced dynamic response of the main structure via the tuned mass damper. Experimental results are provided to show the effective performance of the proposed passive vibration absorption scheme to suppress resonant frequency harmonic excitations disturbing the primary system, evaluating the performance energy and contribution of the dissipative device for the energy release in the overall system.

scholarly journals A selection of parameters of tuned mass damper for multi-degree-of-freedom systems subjected to second order coloured noise excitation

2003 ◽  
Vol 25 (2) ◽  
pp. 65-76
Author(s):  
Nguyen Dong Anh ◽  
Nguyen Chi Sang
Keyword(s):  
Control Systems ◽  
Passive Control ◽  
Tuned Mass Damper ◽  
Second Order ◽  
Primary System ◽  
Secondary System ◽  
Coloured Noise ◽  
Structure Control ◽  
Mass Damper ◽  
Selection Of

Among the fundamental concepts for structure control, passive control systems have a significant role since they do not require additional energies produced by actuator. The basic of passive control is to incorporate a secondary system into the primary structure in order to transfer a part of the vibration energy of the primary system into the secondary one. In the paper the design of an optimal tuned mass damper (TMD) for a structure subjected to second order coloured noise excitation is investigated in order to minimize the sum of response mean squares of components of the primary system with a given ranking priority.

Design method of tuned mass damper by LMI based robust control theory for seismic excitation

2022 ◽  
pp. 1-47
Author(s):  
Kou Miyamoto ◽  
Satoshi Nakano ◽  
Jinhua She ◽  
Daiki Sato ◽  
Yinli Chen ◽  
...  
Keyword(s):  
Robust Control ◽  
Control Theory ◽  
Passive Control ◽  
Structural Model ◽  
Design Method ◽  
Tuned Mass Damper ◽  
Structural Vibration ◽  
Linear Matrix ◽  
Mass Damper ◽  
Robust Control Theory

Abstract This paper presents a new design method based on a robust-control strategy in the form of a linear matrix inequality (LMI) approach for a passive tuned mass damper (TMD), which is one of the common passive-control devices for structural vibration control. To apply the robust control theory, we first present an equivalent expression that describes a passive TMD as an active TMD. Then, some LMI-based condition is derived that not only guarantees robust stability but also allows us to adjust the robust H¥ performance. In particular, this paper considers the transfer function from a seismic-wave input to structural responses. Unlike other methods, this method formulates the problem to be a convex optimization problem that ensures a global optimal solution and considers uncertainties of mass, damping, and stiffness of a structure for designing a TMD. Numerical example uses both a single-degree-of-freedom (SDOF) and 10DOF models, and seismic waves. The simulation results demonstrated that the TMD that is designed by the presented method has good control performance even if the structural model includes uncertainties, which are the modeling errors.

Analysis on vibration control of a large-span pedestrian suspension bridge based on a multiple tuned mass damper system

2019 ◽  
Vol 50 (2) ◽  
pp. 56-63
Author(s):  
Zhen Li ◽  
Dejian Li ◽  
Yao Lu ◽  
Chao Tang
Keyword(s):  
Vibration Control ◽  
Passive Control ◽  
Suspension Bridge ◽  
Element Model ◽  
Tuned Mass Damper ◽  
Load Spectrum ◽  
Large Span ◽  
Pedestrian Bridges ◽  
Mass Damper ◽  
Reduction Effect

Tuned mass damper is one of the commonly used passive control devices. It is the earliest used device in civil engineering control of vibration control of high-rise buildings and towering structures. For large-span pedestrian bridges, the pedestrian load spectrum covers many modalities of pedestrian bridges. It is difficult to achieve the expected results with a single tuned mass damper device. In order to obtain efficient damping, the multiple modes of a multiple tuned mass damper which may resonate under excitation are controlled. This chapter adopts the pedestrian suspension bridge over Dongtan River as the subject to arrange a multiple tuned mass damper system in the finite element model of the pedestrian suspension bridge, analyze the effectiveness of the multiple tuned mass damper system on the control of human-induced vibration of a large-span pedestrian suspension bridge, and discuss the vibration reduction effect of the multiple tuned mass damper system on the response to human-induced vibration of the pedestrian suspension bridge. The analysis shows that a multiple tuned mass damper system has a significant effect on controlling human-induced vibration of the pedestrian suspension bridge.

A Review of Smart Material and Vibration Control for Civil Engineering Structure

2012 ◽  
Vol 204-208 ◽  
pp. 4097-4100 ◽  
Author(s):  
Li Ping Qin ◽  
Yuan Jun Yan
Keyword(s):  
Vibration Control ◽  
Structural Control ◽  
Passive Control ◽  
Control Mechanism ◽  
Smart Material ◽  
Structural Vibration ◽  
Active Structural Control ◽  
Shock Resistance ◽  
Resistance Performance ◽  
Research Frontiers

Intelligent control for structural vibration is the international research frontiers in vibration control. The intelligent material and intelligent adjustable dampers and smart material actuator has the advantages of simple structure, easy adjustment, small energy consumption, driving the rapid response, almost without delay, in active structural control, semi-active control and passive control, has broad application prospects. The actuator is setted on the structure as a control mechanism, the control mechanism and the structure resist the vibration dynamic loads together, reduce the dynamic response of structure, improve the shock resistance performance of the structure.

scholarly journals Exact Solutions for a Novel H2 Optimal Design of Electromagnetic Tuned Mass Damper

2021 ◽  
Author(s):  
Ge Li ◽  
Qibo Mao ◽  
Yifan Luo ◽  
Yong Wang ◽  
Lei Liu
Keyword(s):  
Vibration Control ◽  
Optimization Design ◽  
Damping Ratio ◽  
Tuned Mass Damper ◽  
Parameters Optimization ◽  
Structural Vibration ◽  
Control Effect ◽  
Mass Damper ◽  
Two Parameters ◽  
H2 Optimization

To realize structural vibration control,a two parameters H2 optimization design was proposed to optimize the tuning ratio and damping ratio for electromagnetic tuned mass damper (EMTMD). The control effect of this two parameters optimization design is better than that of classical tuned mass damper (TMD).For this two parameters optimization,the most important thing is that the inductance of the coil can be set very small and the external load resistance can be positive ,which can avoid the use of complex negative impedance circuit. If Ref.[6] were designed according to the H2 optimization of two parameters, the EMTMD can be used for multi-modal vibration control of structures without connecting negative inductance and negative resistance spontaneously.

scholarly journals Design of a Tuned Mass Damper Inerter (TMDI) Based on an Exhaustive Search Optimization for Structural Control of Buildings under Seismic Excitations

2020 ◽  
Vol 2020 ◽  
pp. 1-19
Author(s):  
Luis Augusto Lara-Valencia ◽  
Yosef Farbiarz-Farbiarz ◽  
Yamile Valencia-González
Keyword(s):  
Structural Control ◽  
Passive Control ◽  
Damping Ratio ◽  
Optimization Procedure ◽  
Tuned Mass Damper ◽  
Exhaustive Search ◽  
Device Design ◽  
Peak Displacement ◽  
Search Optimization ◽  
Mass Damper

A tuned mass damper inerter (TMDI) is a new class of passive control device based on the inclusion of an inerter mechanism into a conventional tuned mass damper (TMD). The inerter device provides inertial resisting forces to the controlled system, through relatively small masses, converting it in a mechanism with the potential to enhance the performance of passive energy dissipating systems. This work presents a study of an optimal TMDI design through an exhaustive search process. TMDI device design using the cited parameter selection methodology consists in the determination of the damper critical damping ratio, ζTMDI, and frequency ratio, υTMDI, which result in the minimum structural response of a multidegree of freedom structural system, considering predefined values for mass ratio (µ) and inertance ratio (β). The used optimization process examines all possible damping device design parameter combinations to select the set of values that results in the best device performance to reduce response parameters in a structure. Four different optimization processes are performed by independently minimizing four performance indices: J1 associated to the reduction of the structure’s maximum peak displacement, J2 calculates the minimal RMS value for the structure’s peak displacement, J3 seeks by the minimal peak interstorey drift, and JP determines the lowest value for a linear weighted combination of the abovementioned three indices. A numerical example is developed with the purpose of validating the proposed optimization procedure and to evaluate the benefits of using TMDI as controlling devices for structures under seismic excitation, by carrying out a comparative analysis to contrast the performance of the optimization alternatives developed, running up to 1968192 cases. The obtained results show that devices designed based on exhaustive search optimization produce peak displacement reductions of up to 35% and peak structure displacement RMS reductions of up to 30%.

scholarly journals Lever-Type Tuned Mass Damper for Alleviating Dynamic Responses

2019 ◽  
Vol 2019 ◽  
pp. 1-11
Author(s):  
Eun-Taik Lee ◽  
Hee-Chang Eun
Keyword(s):  
Vibration Control ◽  
Numerical Experiments ◽  
Degrees Of Freedom ◽  
Tuned Mass Damper ◽  
Dynamic Responses ◽  
Structural Vibration ◽  
Constraint Condition ◽  
Structural Vibration Control ◽  
Mass Damper ◽  
Vibration Responses

This study considers the structural vibration control by a lever-type tuned mass damper (LTMD). The LTMD has a constraint condition to restrict the motion at both ends of the lever. The LTMD controls the dynamic responses at two locations combining the tuned mass damper (TMD) and the constraint condition. The parameters of the LTMD are firstly estimated from the TMD parameters and should be modified by them to obtain from numerical results. The effectiveness of the LTMD is illustrated in two numerical experiments, and the sensitivity of the parameters is numerically investigated. It is shown that the LTMD leads to the remarkable displacement reduction and exhibits more definite control than the TMD system because the LTMD controls the vibration responses at two DOFs. More displacement responses are reduced when the installation locations of the LTMD coincide with the nodes to represent the largest modes’ values at the first and second modes. The application of the LTMD at the dynamic system of a few degrees of freedom (DOFs) is more effective than the system of many DOFs.

scholarly journals Active control for machinery equipment induced structural vibration using H∞ criterion and PSO technique

2019 ◽  
Vol 39 (1) ◽  
pp. 21-28
Author(s):  
Xu Jian ◽  
Zhang Tong-yi ◽  
Huang Wei ◽  
Hu Ming-yi ◽  
Qin Jing-wei ◽  
...  
Keyword(s):  
Vibration Control ◽  
Active Control ◽  
Control Strategy ◽  
Composite System ◽  
Vibration Suppression ◽  
Tuned Mass Damper ◽  
Structural Vibration ◽  
Swarm Optimization ◽  
Mass Damper ◽  
Active Control Strategy

In this paper, machinery equipment induced structural vibration was investigated and a composite system for structure and equipment was proposed. Tuned mass damper (TMD) and active tuned mass damper (ATMD) were respectively performed for vibration control, in addition, particle swarm optimization (PSO) was utilized for pursuing an optimal active control. Numerical results confirmed that the presented active control strategy could achieve a better vibration suppression compared to TMD control. The PSO based active control also gave inspiration for improving the traditional vibration control.

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