Experimental studies on the effectiveness and robustness of a pounding tuned mass damper for vibration suppression of a submerged cylindrical pipe

Jiang, Junnan; Zhang, Peng; Patil, Devendra; Li, Hong‐nan; Song, Gangbing

doi:10.1002/stc.2027

Cited by 60 publications

(40 citation statements)

References 26 publications

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“…Traditional passive TMDs have the widest application in real projects; however, they have the disadvantage of high sensitivity to frequency deviation with the primary structural frequency, and they also have difficulty adjusting the frequency . To solve this problem, several adaptive and semiactive TMDs have been proposed, for example, the semiactive independent variable stiffness device, a semiactive TMD with variable stiffness and damping, and an adaptive length SMA pendulum smart TMD .…”

Section: Introductionmentioning

confidence: 99%

An adaptive‐passive retuning device for a pendulum tuned mass damper considering mass uncertainty and optimum frequency

Wang

Shi

et al. 2019

Struct Control Health Monit

127

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A tuned mass damper (TMD) is one of the most used structural control devices. However, a traditional TMD has the disadvantage of high sensitivity to frequency deviation and difficulty adjusting the frequency. The optimal frequency for a TMD is dependent on the structural dominant frequency and the TMD mass ratio. Nevertheless, the actual structural modal mass is difficult to obtain, and the presence of a TMD may interfere with identification of the natural structural frequency. Aiming to control wind-induced vibration, an adaptive-passive retuning device is developed for a pendulum TMD called an adaptive-passive variable pendulum TMD (APVP-TMD). When it is time to adjust the pendulum, the mass will first be locked, and the structural frequency in this case is identified through wavelet transformation by an acceleration sensor and a microcontroller. It is found that this is actually the optimal frequency for the TMD. Then, a stepper motor will adjust the length of the pendulum under the guidance of the microcontroller. The effectiveness of APVP-TMD is verified through both discrete and continuous models. For the discrete model, a single-degree-offreedom primary structure coupled with an APVP-TMD is presented as an experiment with analysis comparison, and a five-degree-of-freedom primary structure coupled with an APVP-TMD is proposed as a numerical simulation. For the continuous model, a wind-sensitive concrete chimney is controlled by an APVP-TMD as a case study. The results all show that the APVP-TMD can identify the optimal frequency and retune itself effectively, and the retuned TMD has better vibration control than the mistuned one.

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Section: Introductionmentioning

confidence: 99%

An adaptive‐passive retuning device for a pendulum tuned mass damper considering mass uncertainty and optimum frequency

Wang

Shi

et al. 2019

Struct Control Health Monit

127

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“…The simplicity of the design allows the PTMD to be easily adapted to different conditions and usages; and since the PTMD is robust and can maintain its performance for long periods of time, the need for maintenance is reduced. In recent years, PTMD has been extensively studied for implementation in different types of facilities [37][38][39][40], including frame structures [41], subsea jumpers [42,43], power transmission towers [44], etc. In a previous study by the authors [45], two types of PTMDs (spring steel type and pendulum type) associated with viscoelastic (VE) material were designed.…”

Section: Introductionmentioning

confidence: 99%

Implementation of Shape Memory Alloy Sponge as Energy Dissipating Material on Pounding Tuned Mass Damper: An Experimental Investigation

et al. 2019

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Piping systems are important nonstructural components of most types of buildings. Damage to piping systems can lead to significant economic losses, casualties, and interruption of function. A survey of earthquake disaster sites shows that suspended piping systems are flexible and thus prone to large deformation, which can lead to serious damage of the piping systems. The single-sided pounding tuned mass damper (PTMD), which is an emerging vibration suppression tool, has the potential to serve as a cost effective and non-invasive solution for the mitigation of vibration in suspended piping systems. The operating frequency of the single-sided PTMD can be tuned similarly to a tuned mass damper (TMD). The single-side PTMD also possesses high energy dissipation characteristics and has demonstrated outstanding performance in vibration control. One of the key factors affecting the performance of the PTMD is the damping material, and there is a constant search for the ideal type of material that can increase the performance of the PTMD. This paper explores the use of shape memory alloy (SMA) sponge as the damping material for two types (spring steel and pendulum types) of PTMDs to mitigate the vibration of a suspended piping system. The PTMDs are tested both in free vibration and in forced vibration. The results are compared with no control, with a TMD control, and with a viscoelastic (VE) material PTMD control. The results show that in free vibration tests, SMA–PTMDs attenuate the displacement of the piping system significantly. The time to mitigate vibration (i.e., reduce 90% of the vibration amplitude) is reduced to 6% (for spring steel type) and 11% (for pendulum type) of the time taken to mitigate vibration without control. In forced vibration tests, the overall magnitudes of the frequency response are also lowered to 38% (spring steel) and 44% (pendulum) compared to vibration without control. The results indicate that SMA has the potential to be a promising energy dissipating material for PTMDs.

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“…Passive control systems do not require an external power source . Due to their long‐term reliability and stable performance in energy dissipation, passive control devices (or dampers) have been widely used in mitigating the dynamic responses of structures and in disaster prevention in civil engineering …”

Section: Introductionmentioning

confidence: 99%

A re-centering deformation-amplified shape memory alloy damper for mitigating seismic response of building structures

Huang

2018

Struct Control Health Monit

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Summary This paper presents an innovative re‐centering deformation‐amplified shape memory alloy damper (RDASD) to reduce the responses of civil structures under earthquake motions. The damper can amplify the displacement deformation according to actual needs and fully exploit the energy dissipation capacity of superelastic shape memory alloy materials. Cyclic tensile‐compressive tests of the fabricated RDASD are conducted to study the influence of the displacement amplitude and loading rate on the damper's mechanical properties. Additionally, a theoretical model of the RDASD that can precisely simulate the hysteretic characteristics of the damper is proposed. Finally, a nonlinear time history analysis is performed on a six‐story steel frame for three cases: no dampers, dampers without deformation amplification, and dampers with deformation amplified by a factor of 2.5. The results show that the proposed RDASD can not only effectively mitigate the displacement, acceleration, and interstory drift responses due to its efficient energy dissipation capacity but also provide superior re‐centering by amplifying the relative deflection for building structures. In practical applications, the recommended range for the deformation amplification coefficient of the damper is 2.0–3.0.

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Experimental studies on the effectiveness and robustness of a pounding tuned mass damper for vibration suppression of a submerged cylindrical pipe

Cited by 60 publications

References 26 publications

An adaptive‐passive retuning device for a pendulum tuned mass damper considering mass uncertainty and optimum frequency

An adaptive‐passive retuning device for a pendulum tuned mass damper considering mass uncertainty and optimum frequency

Implementation of Shape Memory Alloy Sponge as Energy Dissipating Material on Pounding Tuned Mass Damper: An Experimental Investigation

A re-centering deformation-amplified shape memory alloy damper for mitigating seismic response of building structures

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