Study on mechanical properties of high damping viscoelastic dampers

Chen, Yun; Chao, Chen; Ma, Qianqian; Jiang, Huanjun; Wan, Zhiwei

doi:10.1177/1369433219853440

Cited by 23 publications

(16 citation statements)

References 19 publications

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“…The equivalent viscous damping coefficient ξe is an important index for evaluating the energy dissipation capacity of structures [24]. Eq.…”

Section: Evaluation Of Energy Dissipation Performance Of Componentsmentioning

confidence: 99%

Study on Mechanical Properties of Honeycomb Regular Hexagon Damper

2024

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Traditional metal dampers have the advantages of easy processing, convenient production, and good mechanical properties. However, most of the traditional metal dampers are single design, and their application is limited by the size of the dampers. Based on the honeycomb metal damper, a honeycomb regular hexagon metal damper with a free connection is proposed in this paper. Firstly, the failure mechanism, hysteretic curve, skeleton curve, stiffness degradation curve, and energy dissipation curve of the single energy-dissipating supporting member and the triple two-row supporting member were obtained through the low-cycle reciprocating loading test. Then the R-O mechanical model was fitted to the skeleton curve obtained from the test. Then, three kinds of honeycomb regular hexagon dampers were modeled by ABAQUS finite element simulation software, and the finite element simulation results were compared with the test results. The results show that the energy dissipation support in this paper has a good bearing capacity and energy dissipation capacity, and the development trend of simulation results align with the experimental results. The energy dissipation capacity of the energy dissipation support can be improved, and the multi-section yield can be achieved by connecting multiple energy dissipation units.

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“…The equivalent viscous damping coefficient ξe is an important index for evaluating the energy dissipation capacity of structures [24]. Eq.…”

Section: Evaluation Of Energy Dissipation Performance Of Componentsmentioning

confidence: 99%

Study on Mechanical Properties of Honeycomb Regular Hexagon Damper

2024

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“…With the PTMD, the energy of the main structure is transferred to the damper and then dissipated through the pounding between the mass of the PTMD and the limiter, which is lined with VE material. VE material has a strong ability to dissipate energy and has been used for vibration control for many years (Chen et al, 2019; Nguyen et al, 2012). The kinetic energy used to deform the VE material is dissipated by transforming the kinetic energy into thermal energy.…”

Section: Configuration Of Proposed Cld-ptmdmentioning

confidence: 99%

Pounding tuned mass damper with constrained layer damping

Duan

Huo

2023

Advances in Structural Engineering

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The pounding tuned mass damper (PTMD), which is a passive vibration control device, has attracted much attention in recent years. However, due to the absence of additional dampers in traditional PTMD, the free vibration of structures cannot always be suppressed quickly. Another limitation for the traditional PTMD is that the primary structure is subjected to a large pounding force that may cause local damage and fatigue. To address these limitations, this paper proposes a novel PTMD with constrained layer damping (CLD-PTMD) by attaching a damping layer and the constraining layer to the surface of the stiffness element of the PTMD to provide more damping. In the experiment, the influence that the different configuration parameters have on the damping performance of CLD is examined. A shake table test is conducted to investigate the energy dissipation of a CLD-PTMD subjected to harmonic excitation. The FEM model of the CLD beam is established to determine the damping ratio and analyze more parameters. The CLD-PTMD is used for the vibration control of a simulated SDOF structure. The results demonstrate that compared with the traditional PTMD, CLD dissipates more energy than the pounding process. In addition, CLD-PTMD has a lower pounding force and pounding energy than PTMD in free and forced vibration. The free vibration with CLD-PTMD can be suppressed faster. The robustness of CLD-PTMD is better and the control performance of CLD-PTMD is more stable than traditional PTMD.

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“…Mooney-Rivlin model and/or Yeoh model can be used to simulate the constitutive model of rubber. In theory, the Mooney-Rivlin model is preferable for strain amplitude ranging from 20% to 150% whereas the Yeoh model is suitable for strain amplitudes greater than 150% [16]. This principle is considered in this research with the adopted parameters for modeling the rubber shown in Table 3.…”

Section: Definition Of Materials Propertiesmentioning

confidence: 99%

“…The mechanical properties of VEDs were investigated by Xu et al [15], Chen et al [16], Han et al [17], and Xu et al [18]. During their studies, they designed and manufactured different VEDs varying in size and VE materials.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Improved Multiple-Layers Viscoelastic Damper

Tchamo,

Xiao,

Zhou

2023

Advances in Civil Engineering

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Viscoelastic dampers (VEDs) have been implemented successfully to reduce structural vibrations due to earthquakes and wind events. Conventional VEDs consist of two viscoelastic (VE) layers chemically bounded at their entire contact surface to three steel plates. This configuration has proven to be efficient in controlling the structure vibration. It has also been reported that VEDs can dissipate energy at any level of vibration, producing damping forces. However, when very large damping forces are required, the shear area of the VE layers and the steel plates should be increased to reach the target damping force since the energy is dissipated by hysteretic shear deformation developed in the VE material. Two main issues are associated with this large area. First, the steel plates are more susceptible to experiencing buckling due to out-of-plane deformations. Second, the overall size of the damper becomes larger which is not desirable from the architectural perspective and sometimes from the space usage perspective. As a solution, this study proposes an innovative VED so-called multiple-layers viscoelastic damper (MLVED) able to produce larger damping forces. The proposed MLVED consists of four VE layers bounded between five steel plates. The dynamic mechanical properties of MLVED are initially investigated through a full-scale test. With the test results, the finite element model is developed and calibrated using the commercial software ABAQUS. At a later stage, the calibrated model was used to investigate numerically the mechanical performance of MLVED if different VE layers areas and thicknesses are considered. Results indicated that the proposed MLVED possesses good energy dissipation capacity and its mechanical properties are strongly influenced by strain amplitude rather than loading frequency. Numerical results also showed that the damper is effective in dissipating energy even if different VE layers areas and thicknesses are considered. However, an optimal combination between the area and thickness of the VE layers needs to be found to maximize the damper performance.

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Study on mechanical properties of high damping viscoelastic dampers

Cited by 23 publications

References 19 publications

Study on Mechanical Properties of Honeycomb Regular Hexagon Damper

Study on Mechanical Properties of Honeycomb Regular Hexagon Damper

Pounding tuned mass damper with constrained layer damping

Mechanical Properties of Improved Multiple-Layers Viscoelastic Damper

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