Experimental and analytical study on the performance of particle tuned mass dampers under seismic excitation

Lu, Zheng; Chen, Xiaoyi; Zhang, Dingchang; Dai, Kaoshan

doi:10.1002/eqe.2826

Cited by 141 publications

(111 citation statements)

References 33 publications

(35 reference statements)

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“…All of these problems have a significant influence on the accuracy of the results. [128] 4.2 | Simplified analytical method Considering the challenges in large calculations involving the DEM, Lu et al [74] proposed a simplified analytical method, on the basis of the correlational studies conducted by Papalou and Masri. [52,110,111] The essence of this method is to make all particles being equivalent to a single one, on the basis of certain equivalence principles, to simulate the vibration effects of particle dampers.…”

Section: Discrete/distinct Element Methods (Dem)mentioning

confidence: 99%

“…This type of variant mainly includes the impact damper-tuned absorber combination, [71][72][73] the particle TMD, [74][75][76] and the tuned liquid particle damper. [77] The concept of integrating the impact damper with the tuned absorber was introduced first by Masri [78] in 1971, who proposed the use of the dynamic vibration neutralizer (i.e., TMD) with motion-limiting stops that reflect the physics of an impact damper interacting with the primary system when a motion threshold is exceeded.…”

Section: The Combination Type Of Particle Dampersmentioning

confidence: 99%

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Particle impact dampers: Past, present, and future

Wang

Masri

Lü

2017

Struct Control Health Monit

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175

105

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Particle damping, an effective passive vibration control technology, is developing dramatically at the present stage, especially in the aerospace and machinery fields. The aim of this paper is to provide an overview of particle damping technology, beginning with its basic concept, developmental history, and research status all over the world. Furthermore, various interpretations of the underlying damping mechanism are introduced and discussed in detail. The theoretical analysis and numerical simulation, together with their pros and cons are systematically expounded, in which a discrete element method of simulating a multi-degree-of-freedom structure with a particle damper system is illustrated. Moreover, on the basis of previous studies, a simplified method to analyze the complicated nonlinear particle damping is proposed, in which all particles are modeled as a single mass, thereby simplifying its use by practicing engineers. In order to broaden the applicability of particle dampers, it is necessary to implement the coupled algorithm of finite element method and discrete element method. In addition, the characteristics of experimental studies on particle damping are also summarized. Finally, the application of particle damping technology in the aerospace field, machinery field, lifeline engineering, and civil engineering is reviewed at length. As a new trend in structural vibration control, the application of particle damping in civil engineering is just at the beginning. The advantages and potential applications are demonstrated, whereas the difficulties and deficiencies in the present studies are also discussed. The paper concludes by suggesting future developments involving semi-active approaches that can enhance the effectiveness of particle dampers when used in conjunction with structures subjected to nonstationary excitation, such as earthquakes and similar nonstationary random excitations. KEYWORDS discrete element method, impact damping, nonlinear energy sink, particle damping, passive control, semiactive control | INTRODUCTIONParticle damping technology is a form of an auxiliary-mass type vibration damper, wherein multiple metal, tungsten carbide, ceramic or other types of small particles are placed within the cavities of the vibrating structure, or the enclosures attached to the vibrating structure in order to mitigate the response of the primary structure. [1,2] As the primary structure vibrates, kinetic energy is significantly absorbed through the combined effects of particle-to-particle and particle-to-wall inelastic collisions and frictional losses, producing considerable damping to the primary structure. [3][4][5][6] Particle damping technology has been widely Received: 23 February 2017 Revised: used due to its conceptual simplicity, moderate cost, good durability, and temperature insensitivity. Provided that the operating temperature is below the particles' metal melting point, it could maintain normal operation. Furthermore, material such as tungsten powder can withstand the high temp...

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Section: Discrete/distinct Element Methods (Dem)mentioning

confidence: 99%

Section: The Combination Type Of Particle Dampersmentioning

confidence: 99%

Particle impact dampers: Past, present, and future

Wang

Masri

Lü

2017

Struct Control Health Monit

Self Cite

175

105

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“…Tuned mass dampers (TMD) are one of the most traditional vibration control devices [2][3][4][5][6], and it usually consists of a mass, some springs and damping elements [7]. Because TMDs have the advantages of small size and little interference to pedestrian bridges, they are widely used to control human-induced vibrations and solve the serviceability problem [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Application of an Artificial Fish Swarm Algorithm in an Optimum Tuned Mass Damper Design for a Pedestrian Bridge

et al. 2018

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Tuned mass damper (TMD) has a wide application in the human-induced vibration control of pedestrian bridges and its parameters have great influence on the control effects, hence it should be well designed. A new optimization method for a TMD system is proposed in this paper, based on the artificial fish swarm algorithm (AFSA), and the primary structural damping is taken into consideration. The optimization goal is to minimize the maximum dynamic amplification factor of the primary structure under external harmonic excitations. As a result, the optimized TMD has a smaller maximum dynamic amplification factor and better robustness. The optimum TMD parameters for a damped primary structure with different damping ratios and different TMD mass ratios are summarized in a table for simple, practical design, and the fitting equation is also provided. The TMD configuration optimized by the proposed method was shown to be superior to that optimized by other classical optimization methods. Finally, the application of an optimized TMD based on AFSA for a pedestrian bridge is proposed as a case study. The results show that the TMD designed based on AFSA has a smaller maximum dynamic amplification factor than the TMD designed based on the classic Den Hartog method and the TMD designed based on the Ioi Toshihiro method, and the optimized TMD has a good effect in controlling human-induced vibrations at different frequencies.

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“…Marko et al studied the seismic response of a structure equipped with multiple types of dampers [25]. Furthermore, some dampers with hybrid energy consumption mechanisms were designed to enhance damping performance [26][27][28][29][30]. Lee and his group developed a new hybrid energy dissipation device, combining a steel slit damper and rotational friction dampers [27].…”

Section: Introductionmentioning

confidence: 99%

Studies on Energy Dissipation Mechanism of an Innovative Viscous Damper Filled with Oil and Silt

Lü

Jia

2018

Sustainability

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Abstract:To improve seismic performance of a traditional viscous damper, an innovative viscous damper is proposed, in which the conventional damping medium is replaced by a mixture of oil and silt. This new medium is expected to increase damping force and solve the problem that arises out of the fact that the energy dissipation capacity of a conventional fluid viscous damper is low for small displacements. Firstly, the design concept and device configurations are introduced, then a cyclic loading test is applied to investigate the damper's energy dissipation mechanism in different conditions. Experimental results show that the damper exhibits displacement-dependent characteristics for small displacements, indicating that the silt has changed its damping mechanism. Furthermore, the effect of multiple test parameters on the damping force is analyzed, showcasing that an increase in silt content can visibly increase the damping force. According to experimental data, fitting models of the damping force are obtained and verified, thus promoting further engineering applications.

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Experimental and analytical study on the performance of particle tuned mass dampers under seismic excitation

Cited by 141 publications

References 33 publications

Particle impact dampers: Past, present, and future

Particle impact dampers: Past, present, and future

Application of an Artificial Fish Swarm Algorithm in an Optimum Tuned Mass Damper Design for a Pedestrian Bridge

Studies on Energy Dissipation Mechanism of an Innovative Viscous Damper Filled with Oil and Silt

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