Article
Engineering, Civil
Wenxi Wang, Zhilin Yang, Xugang Hua, Zhengqing Chen, Xiuyong Wang, Gangbing Song
Summary: The study evaluates the performance of PPTMD in controlling vibrations of structures under ground motions. Optimum parametric formulas are proposed for optimal PPTMD design, showing that PPTMD effectively suppresses structural responses even under detuning situations. The effectiveness of PPTMD as a single-mode controller is demonstrated when the target mode is mainly excited under seismic excitations.
ENGINEERING STRUCTURES
(2021)
Article
Engineering, Marine
Meng-Chang Hsieh, Guan-Lee Huang, Haijun Liu, Shih-Jiun Chen, Bang-Fuh Chen
Summary: This paper investigates the performance of the hybrid TMD + TLD system in reducing the motion of a structure, showing that the system can effectively reduce the dynamic response of the structure and increase the bandwidth of excitation frequency. Proper parameter selection plays a key role in the performance of the system.
Article
Engineering, Marine
Wanli Yang, Sijie Yang, Zhichao Zhang, Ning Wang, Gangbing Song
Summary: This study proposes a new form of PTMD that can dissipate vibration energy through both pounding and the traditional TMD mode, reducing the vibration of the main structure. The results show that the new form of PTMD performs well in both air and water flow, with better damping performance in water flow.
Article
Materials Science, Multidisciplinary
Dehui Ye, Jie Tan, Yabin Liang, Qian Feng
Summary: The study investigated the performance of PTMD in vibration control at different temperatures and demonstrated its temperature robustness through experiments. The numerical results validated the accuracy of the pounding force model and the performance of PTMD.
FRONTIERS IN MATERIALS
(2021)
Article
Construction & Building Technology
Yaoyao Duan, Linsheng Huo
Summary: The traditional PTMD has limitations in quickly suppressing free vibration and causing local damage and fatigue. To address these issues, this paper proposes a novel CLD-PTMD with additional damping layers. Experimental results show that the CLD-PTMD dissipates more energy, has lower pounding force and energy, and can suppress free vibration faster than the traditional PTMD.
ADVANCES IN STRUCTURAL ENGINEERING
(2023)
Article
Engineering, Geological
Aly Mousaad Aly, Suvash Chapain
Summary: The paper introduces a novel device, PTMD, which improves upon the effectiveness of TMD in earthquake mitigation by introducing a pounding surface near its static equilibrium position. Through a shake table experiment, the study demonstrates that the PTMD exhibits greater robustness and effectiveness in reducing responses across a broader range of frequencies compared to the TMD. With its exceptional capabilities, the PTMD has the potential to shape the future of infrastructure and contribute to seismic mitigation policies, enhancing overall disaster resilience.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2023)
Article
Acoustics
Ling Mao, Shujin Li, Changjuan Yang, Datao Wu
Summary: This study investigates the rolling friction problem in PTRMD and finds that within a certain range, a higher rolling friction coefficient leads to better control effectiveness for PTRMD. There exists an optimal range of rolling friction coefficient for PTRMD, deviation from which will decrease the vibration control performance.
JOURNAL OF SOUND AND VIBRATION
(2022)
Article
Engineering, Civil
Peiran Fan, Shujin Li, Ling Mao
Summary: This study proposes a multiple pounding tuned rolling mass damper (MPTRMD) distributed in the cavity of voided slabs to passively control multi-story frame structures. The mass of the oscillator is dispersed to multiple dampers, allowing for miniaturization without compromising vibration control performance. Numerical and experimental analyses show that the proposed damper has prominent control performance, is lightweight, and space-saving.
EARTHQUAKES AND STRUCTURES
(2023)
Article
Green & Sustainable Science & Technology
Yize Wang, Zhenqing Liu, Xueyun Ma
Summary: Researchers have discovered that a smaller roller moment of inertia is more beneficial for optimizing the TRCD performance, contrary to conventional belief. An improved TRCD utilizing a bearing to connect the support wheel and roller has been proposed to mitigate detrimental roller rotary movements. Numerical results demonstrate that the improved TRCD exhibits vibration control performance similar to the TMD, while outperforming the original TRCD. It is crucial to design TRCDs based on correct principles to ensure effective performance.
Article
Mechanics
Huong Quoc Cao
Summary: A design of Combined Tuned Mass Damper (CTMD) is proposed for vibration control of structures. The effectiveness of CTMD is significantly affected by the mass ratio between Tuned Liquid Column Damper (TLCD) and Tuned Mass Damper (TMD). Numerical simulations show that CTMD has better vibration control performance over a wider frequency range compared with traditional TMD and TLCD.
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2023)
Article
Engineering, Civil
Jun Dai, Zhao-Dong Xu, Wen-Peng Xu, Xiao Yan, Zheng-Qing Chen
Summary: This paper proposes a framework using a multiple tuned mass damper (MTMD) instead of a single tuned mass damper (STMD) to improve the robustness in mitigating vortex-induced vibration (VIV) in bridges. The framework considers the uncertainties in bridge, aerodynamic, and MTMD parameters to optimize the MTMD design based on a failure probability. Results show that the intensity and uncertainties of VIV have a significant influence on the MTMD performance, and the robustness advantage of MTMD over STMD is only evident when the VIV intensity is moderate or strong.
Article
Engineering, Mechanical
S. Manzoni, A. Argentino, F. Luca, M. Berardengo, M. Vanali
Summary: Different layouts of adaptive tuned mass dampers using shape memory alloys have been proposed. This paper compares wire-based and beam-based layouts in terms of adaptation capability, force exerted, and power consumption. Models are developed for both layouts, minimizing the required inputs related to device geometry, shape memory alloy characteristics, and vibration input. The models are experimentally validated and used for comparing the two layouts.
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Engineering, Civil
Liangkun Wang, Satish Nagarajaiah, Ying Zhou, Weixing Shi
Summary: In this study, an adaptive-passive variable stiffness tuned mass damper (APVS-TMD) is proposed to solve the mistuning problem of a passive TMD. The stiffness and frequency of the APVS-TMD can be retuned by changing the length of the cantilever beam and adjusting the air gap between the conductor plate and magnets. Numerical simulation and experimental verification show that the APVS-TMD can accurately identify the decoupled structural natural frequency and effectively control human-induced vibrations.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Mingjie Zhang, Fuyou Xu
Summary: This study introduces a nonlinear control target, which is more effective than the conventional target, and develops an optimization procedure to obtain more economical TMD parameters. Analysis of numerical examples with different cross-sections demonstrates the different design results achieved by the nonlinear target.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2022)
Article
Mechanics
Huong Quoc Cao, Ngoc-An Tran
Summary: A double tuned mass damper (DTMD) for suppressing oscillations of civil structures is proposed in this study. The impact of parameters on the essential characteristics and vibration absorption capacity of DTMD is investigated using genetic algorithms (GA) to determine the optimum parameters of DTMD. The effectiveness and robustness of DTMD are compared with those of an optimized TMD, and multi-objective optimization designs of DTMD are also developed.
ARCHIVE OF APPLIED MECHANICS
(2023)
