Metaheuristic based optimization of tuned mass dampers under earthquake excitation by considering soil-structure interaction

Bekdaş, Gebrai̇l; Niğdeli, Sinan Melih

doi:10.1016/j.soildyn.2016.10.019

Cited by 94 publications

(42 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…PSO algorithm is known as a good global optimizer [42], therefore this method is followed in this paper. Other optimization methods such as metaheuristic methods [43] are not studied in this paper. Afterwards, the efficiency of the designed TMDs is evaluated over a wide range of wind excitation frequencies and especially around the resonance conditions.…”

Section: Introductionmentioning

confidence: 99%

Optimum design of tuned mass damper via PSO algorithm for the passive control of forced oscillations in power transmission lines

Abbasi

Moradi

2020

SN Appl. Sci.

View full text Add to dashboard Cite

Transmission lines are prone to external excitations due to their low density and internal damping coefficient. They are vulnerable to some natural events such as wind and rain which may disrupt power transmission. Forced vibration due to external disturbances is one of the most frequent causes of failures in these lines. In this study, effects of tuned-massdampers (TMDs) on reduction of forced vibrations are investigated. A mathematical model for the transmission line is proposed by using mode summation technique combined with the dynamics of the absorbers. Best values for the location, stiffness and mass of the absorbers are found by using Particle Swarm Optimization algorithm (damping coefficients are obtained as zero). The objective of the algorithm is to minimize the line deflection to postpone the failure and the replacement of the lines. Results show that the designed TMDs are efficient in reduction of forced vibrations. Finally, the same procedure is implemented under resonance condition. The designed TMDs lead to a high reduction factor in the line deflection. Similarly, the proposed optimization algorithm can be used in other industrial applications of the flexible cables; under various external excitations.

show abstract

Section: Introductionmentioning

confidence: 99%

Optimum design of tuned mass damper via PSO algorithm for the passive control of forced oscillations in power transmission lines

Abbasi

Moradi

2020

SN Appl. Sci.

View full text Add to dashboard Cite

show abstract

“…By using population‐based algorithm called particle swarm optimization, Leung and Zhang provided closed‐form TMD tuning formulations. The music inspired metaheuristic algorithm called harmony search (HS) employed in many TMD optimization stories to investigate optimum values in time domain, mass ratio factor, preventing brittle fracture, preventing pounding of adjacent structures, optimum values in frequency domain, optimum values considering soil‐structure interaction (SSI), and optimum TMD design for high‐rise intake towers . Keshtegar and Etedali proposed an adaptive dynamic HS algorithm for TMD optimization using a nonlinear mathematical model.…”

Section: Introductionmentioning

confidence: 99%

“…By considering soil‐structure interaction, optimum TMD tuning methods have been developed by employing ant colony optimization, artificial bee colony, and shuffled complex evaluation . The other nature‐inspired metaheuristic algorithms employed for TMD tuning are bat algorithm and flower pollination algorithm (FPA)…”

Section: Introductionmentioning

confidence: 99%

Optimum design of multiple positioned tuned mass dampers for structures constrained with axial force capacity

Niğdeli

Bekdaş

2019

Structural Design Tall Build

Self Cite

View full text Add to dashboard Cite

The stories of structure may have different and limited axial force capacity. In order to passively control the translational movement of structures, a tuned mass damper (TMD) positioned on a story may cause to exceed axial force capacity of a story.The optimum performance is achieved when all additional masses are positioned on the top story. Whereas, the top stories of structure may be constructed with lower axial force capacity than the lower stories. In that case, the maximum allowed TMD mass for upper stories may be low. In that situation, several TMDs may be positioned on several stories. In the current study, the optimum tuning of TMDs positioned on multiple stories of structure is investigated. By using small masses, it is also possible to obtain effective passive control with dampers that have small damping coefficients comparing with a single TMD on the top of the structure. The design variables of the optimization problem such as the period and damping ratio of TMD are tuned according to a metaheuristic algorithm called flower pollination algorithm. The TMD is optimized for near-fault excitations by using impulsive motions during the optimization process. The proposal was applied to four case studies. According to the results, the multiple positioned TMDs may be a practical and effective option comparing with the use of a single heavy TMDs on the top of a structure. KEYWORDS axial force, flower pollination algorithm, impulsive motions, optimization, optimum tuning, tuned mass dampers | INTRODUCTIONIn order to reduce structural vibrations originating from seismic sources, tuned mass dampers (TMDs) can be used, but the mass of the TMD must be too big to provide an effective performance on the lateral responses of the structure. Although the responses are positively affected, the fracture or ductility limit (especially for reinforced concrete structures) of vertical structural members (columns) can be exceeded. In that situation, the structural capacity must be considered as the mass limit or the structure must be retrofitted for increasing the axial force capacity. In a civil structure, the forces of upper stories are directed to a lower story. In that case, the axial force is the maximum at the lowest story. For that reason, upper stories of civil structures may be constructed by smaller cross-sections and less reinforcements than the lower stories. In that case, the axial force capacity of upper stories may be less than the capacity of the lower stories. Generally, the optimum position of a TMD is the top of the building where the first mode shape value is the maximum for the critical mode of the structure. In that case, the number of TMDs can be increased and small TMDs can be placed on multiple stories.The most important performance index of TMDs is the optimum tuning. By using multiple TMDs on different stories, it will be a more challenging optimization problem. For this problem, to use a well-known optimum frequency and damping ratio formulation will not be effective because these formulations wer...

show abstract

“…Also, the TMD parameters appear to be at least slightly dependent on the characteristics of the applied dynamic loading [7,23,41,42]. This issue motivated different investigations based, inter alia, on the modelling of real excitation cases, such as for random [43], wind [3,27] or seismic [2,8,11,12,[24][25][26]44] actions.…”

Section: Introductionmentioning

confidence: 99%

Optimum Tuning of Passive Tuned Mass Dampers for the Mitigation of Pulse-Like Responses

Salvi

Rizzi

Rustighi

et al. 2018

Journal of Vibration and Acoustics

View full text Add to dashboard Cite

Tuned mass dampers (TMDs) are typically introduced and calibrated as natural passive control devices for the vibration mitigation of the steady-state response of primary structures subjected to persistent excitations. Otherwise, this work investigates the optimum tuning of TMDs toward minimizing the transient structural response. Specifically, a single-degree-of-freedom (SDOF) system is considered as a primary structure, with added TMD, subjected to pulse-like excitations. First, the system is analytically analyzed, within the time domain, for unit impulse base displacement, through Laplace transform. Then, the tuning process is numerically explored by an optimization procedure focused on an average response index, to extract the optimum condition toward best TMD calibration. The efficiency of the proposed control device is then assessed and demonstrated through further post-tuning numerical tests, by considering as dynamic loadings: first, a time unit impulse base displacement, coherent with the source description above; second, different pulse-like excitations, to detect the effectiveness of the so-conceived TMD for generic ideal shock actions; third, a set of nonstationary earthquake excitations, to enquire the achievable level of seismic isolation. It is shown that this leads to a consistent passive TMD in such a transient excitation context, apt to mitigate the average response. Additionally, the present tuning forms a necessary optimum background for a possible upgrade to a hybrid TMD, with the potential addition of an active controller to the so-optimized TMD, to achieve even further control performance, once turned on, specifically for abating the peak response, too.

show abstract

Metaheuristic based optimization of tuned mass dampers under earthquake excitation by considering soil-structure interaction

Cited by 94 publications

References 42 publications

Optimum design of tuned mass damper via PSO algorithm for the passive control of forced oscillations in power transmission lines

Optimum design of tuned mass damper via PSO algorithm for the passive control of forced oscillations in power transmission lines

Optimum design of multiple positioned tuned mass dampers for structures constrained with axial force capacity

Optimum Tuning of Passive Tuned Mass Dampers for the Mitigation of Pulse-Like Responses

Contact Info

Product

Resources

About