Innovative Mobile TMD System for Semi-active Vibration Control of Inclined Sagged Cables

Salari, Soroush; Hormozabad, Sajad Javadinasab; Ghorbani‐Tanha, Amir K.; Rahimian, M.

doi:10.1007/s12205-018-0161-0

Cited by 12 publications

(5 citation statements)

References 26 publications

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“…Also, research on using fuzzy theory in active control of structure’s dynamic response was done (Battaini et al, 1998; Tachibana and Inoue, 1992; Teng et al, 2000). More recent applications of fuzzy systems in Civil engineering are in modeling Neuro-fuzzy hybrid semiactive base isolation (Kim et al, 2006), active control of high rise buildings (Guclu and Yazici, 2008; Pourzeynali et al 2007), optimizing TMD parameters (Ramezani et al 2017), optimize the position of a mobile TMD on an inclined sagged cable (Salari et al, 2019), and vibration reduction of highway bridge structures (Javadinasab Hormozabad and Gutierrez Soto, 2021).…”

Section: Fuzzy Logic Controlmentioning

confidence: 99%

An innovative semi-active pendulum tuned mass damper and its application in vibration control

Sadatieh

Ghorbani‐Tanha

2022

Journal of Vibration and Control

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An innovative Semi-Active Pendulum Tuned Mass Damper (SAPTMD) with variable frequency is introduced in this paper. The SAPTMD consists of two identical pendulum systems, each consisting of a pendulum and two springs attached to the pendulum mass. The pendulums are mounted on two boxes that can rotate symmetrically around the horizontal shafts that pass through them. Due to the change in inclination of the pendulum systems and, consequently, the orientation of the oscillating pendulums, the frequency of the proposed system can change within a predefined range. Besides, the need for less height for installation is another advantage of the SAPTMD over the conventional pendulum tuned mass dampers. In order to show the efficiency of the SAPTMD, it is attached to a single degree of freedom primary system excited similar to excitation due to an unbalanced rotating machinery during its start-up period. The SAPTMD’s performance is compared with a classical tuned mass damper. As it is shown, the response of the primary system is reduced noticeably. Furthermore, the performance of the system is improved by utilizing a fuzzy Proportional-Integral-Derivative (PID) controller.

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Section: Fuzzy Logic Controlmentioning

confidence: 99%

An innovative semi-active pendulum tuned mass damper and its application in vibration control

Sadatieh

Ghorbani‐Tanha

2022

Journal of Vibration and Control

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“…The use of the structural fuse has shown several benefits. One of the major benefits of damper usage is the component's replaceability after an event occurred; thus, the repair works are conducted effectively without affecting the structural functionality [2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Optimization of the Curved Metal Damper to Improve Structural Energy Dissipation Capacity

et al. 2022

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Structural curved metal dampers are implemented in various applications to mitigate the damages at a specific area efficiently. A stable and saturated hysteretic behavior for the in-plane direction is dependent on the shape of a curved-shaped damper. However, it has been experimentally shown that the hysteretic behavior in the conventional curved-shaped damper is unstable, mainly as a result of bi-directional deformations. Therefore, it is necessary to conduct shape optimization for curved dampers to enhance their hysteretic behavior and energy dissipation capability. In this study, the finite element (FE) model built in ABAQUS, is utilized to obtain optimal shape for the curved-shaped damper. The effectiveness of the model is checked by comparisons of the FE model and experimental results. The parameters for the optimization include the curved length and shape of the damper, and the improved approach is conducted by investigating the curved sections. In addition, the design parameters are represented by B-spline curves (to ensure enhanced system performance), regression analysis is implemented to derive optimization formulations considering energy dissipation, constitutive material model, and cumulative plastic strain. Results determine that the energy dissipation capacity of the curved steel damper could be improved by 32% using shape optimization techniques compared to the conventional dampers. Ultimately, the study proposes simple optimal shapes for further implementations in practical designs.

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“…e authors created a comprehensive 3D nonlinear model of the Lali Cable-Stayed Bridge considering material and geometrical nonlinearities as well as prestress forces in stay cables and evaluated the performance of several fuzzy controllers on the bridge. MR dampers together with fuzzy controllers were also employed to propose a mobile TMD device for vibration control of sagged stay cables [21]. e proposed system incorporated fuzzy algorithms to control the performance of MR dampers and a locating algorithm to find the optimal location of the semiactive device along the cable.…”

Section: Introductionmentioning

confidence: 99%

Study on Passive and Semiactive Control Systems in Structures under Near- and Far-Field Earthquakes

Zamanian

Kheyroddin

Mortezaei

2022

Shock and Vibration

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The construction demand for irregular structures is increasing due to the population growth of cities, limited construction areas, and the aesthetics of structures. Lack of proper understanding on the dynamic behavior of these structures during seismic events can lead to local and global failures on them. In order to investigate this issue, we used a regular 10-story structure with three different stiffness irregularity cases along the elevation. Irregularities are considered in three positions: the lower half of the structure height, the lowest story, and the middle story. In this study, to reduce the damage and mitigate the seismic response of the structure, three control systems are proposed including a magnetorheological (MR) damper with semiactive fuzzy controller as the semiactive control system, a Tuned Mass Damper (TMD) as the passive control system, and the simultaneous use of them. Based on the numerical analyses under near- and far-field ground motions, the residual plastic deformations are significantly reduced by the simultaneous use of MR damper and TMD, while each of these dampers alone performs poorly in some cases. The results show that if these two dampers are used together, a more promising control system with robust performance against changes in system parameters can be achieved.

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Innovative Mobile TMD System for Semi-active Vibration Control of Inclined Sagged Cables

Cited by 12 publications

References 26 publications

An innovative semi-active pendulum tuned mass damper and its application in vibration control

An innovative semi-active pendulum tuned mass damper and its application in vibration control

Optimization of the Curved Metal Damper to Improve Structural Energy Dissipation Capacity

Study on Passive and Semiactive Control Systems in Structures under Near- and Far-Field Earthquakes

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