Identification of multi-dimensional elastic and dissipative properties of elastomeric vibration isolators

Ramesh, Ram S.; Fredette, Luke; Singh, Rajendra

doi:10.1016/j.ymssp.2018.09.009

Cited by 10 publications

(8 citation statements)

References 17 publications

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“…Zhou et al (2017) extended the QZS vibration isolation method from one DOF to six DOFs by the method of applying a new-type QZS strut to establish a 6-DOF QZS vibration isolation platform, which possesses broader bandwidth and higher effectiveness compared with the linear counterpart. Ramesh et al (2019) combined rigid body isolation and modal analysis principles to obtain the elastic and dissipative properties of the vibration isolator and analyzed several kinds of 3-DOF model isolation systems on the modal experiments and system characterization for validation purposes. Traditional linear energy dissipative methods and devices are greatly limited for wider application on account of the unsatisfactory properties under certain conditions, while non-linear vibration mitigation devices with broadband response and high robustness are being widely investigated and applied (Lu et al, 2018b).…”

Section: Multi-dimensional Vibration Mitigation/isolation Devices Appmentioning

confidence: 99%

Recent Advances in Multi-Dimensional Vibration Mitigation Materials and Devices

Chen

Zhou

et al. 2019

Front. Mater.

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Harmful vibrations can cause many engineering problems, such as disasters of civil engineering structures, failure of precision equipment, and the disruption of some spacecraft components. In most situations, the vibrations are usually three-dimensional excitations. Therefore, research on multi-dimensional vibration control has become a worldwide hotspot in engineering. This article presents a comprehensive assessment of recent developments of multi-dimensional vibration mitigation devices and the material applied in such devices. The vibration mitigation materials mainly include the passive vibration mitigation materials and smart vibration mitigation materials. Subsequently, the vibration mitigation devices in civil engineering, mechanical engineering, and aerospace engineering are reviewed and commented, respectively. Above all, the multi-dimensional vibration mitigation devices and materials are found to be effective for reducing multi-dimensional vibrations. However, enhancing the mitigation performance of the devices in each direction, including improving the mitigation capability of materials, is still a challenging issue.

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Section: Multi-dimensional Vibration Mitigation/isolation Devices Appmentioning

confidence: 99%

Recent Advances in Multi-Dimensional Vibration Mitigation Materials and Devices

Chen

Zhou

et al. 2019

Front. Mater.

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“…Much effort has been made to study the characteristics of rubber isolators and fluid dampers from theoretical aspects or experiments. [22][23][24] According to the literature, 25 the experimental research and the parameter identification are respectively carried out for two kinds of hydraulically damped suspension with different shapes and sizes of the orifice, and the dynamic characteristics are analyzed by comparing with the experimental results. From another perspective, the flow-solid coupling FE simulation analysis method is widely used in engineering applications.…”

Section: Introductionmentioning

confidence: 99%

Modeling and experiment study of hydraulically damped rubber mount under larger amplitude excitation at low frequency

Liao

Chen

Wang

et al. 2023

Noise & Vibration Worldwide

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To improve the ride comfort of the cab of construction machinery and reduce the harm of vibration to the driver, a nonlinear lumped parameter model of passive hydraulic damping rubber mount (PHDRM) is first proposed. The nonlinearity of multi-inertial tracks is fully considered. Then, the global FE (finite element) fluid-solid coupling model of the isolator is developed in ABAQUS. The multi-field coupling solution and a joint simulation mode are employed in this paper. Meanwhile, the rubber element and inertial track parameters are identified respectively. Finally, multiple sets of dynamic performance experiments are performed on the different PHDRM samples. The experiment results indicate that the simulation results for two modeling methods of the vibration isolation system are consistent with the experimental datum. The modeling approaches have both reliability and accuracy under larger amplitude excitation at low frequency. Furthermore, the effects of different rubber elements and inertial track of PHDRM on low-frequency dynamic characteristics under larger amplitude are investigated and discussed, respectively. The experimental outcomes also provide a practical reference value for nonlinear modeling method research and dynamic performance analysis of PHDRM with complex structures further.

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“…Multi-dimensional vibration appears at least two directions simultaneously, and exhibits translational and rotational forms, which exists widely in engineering area and daily life. Taking vehicle-mounted hyperspectral imager, vehicle-mounted radar as examples, due to road roughness and operating process, the vibration in horizontal, longitudinal, vertical, pitch, yaw, and roll directions generates at the same time [1]. The accuracy and reliability of vehicle-mounted precise instruments are deteriorated because of multi-dimensional vibration.…”

Section: Introductionmentioning

confidence: 99%

Vibration characteristics of multi-dimensional isolator based on 4-PUU parallel mechanism with joint clearance

Gao

Niu

et al. 2022

Nonlinear Dyn

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For isolating multi-dimensional vibration experienced by vehicle-mounted precise facility, a multidimensional vibration isolator based on parallel mechanism with joint clearance is designed and analyzed. The main thrust of the work is establishing kinematic and dynamic equations of the isolator, and exploring vibration isolation capability with joint clearance. Firstly, type synthesis of the parallel mechanism with three translations and one rotation is performed. The kinematic and dynamic equations of the isolator with joint clearance are deduced. Subsequently, vibration isolation performance is simulated with different values of joint clearance under harmonic and stochastic excitations in time and frequency domain respectively. The simulating results demonstrate the proposed isolator with joint clearance inhibit multi-dimensional vibration effectively. The first order resonance peak is sensitive to the increment of joint clearance. Finally, the proposed multi-dimensional vibration isolator is fabricated. The vibration isolation experiment is conducted. Through experimental results, the isolator reduces multi-dimensional vibration effectively in time and frequency domain significantly. The vibration isolation capability degenerates as the counterweight of moving platform increasing.

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Identification of multi-dimensional elastic and dissipative properties of elastomeric vibration isolators

Cited by 10 publications

References 17 publications

Recent Advances in Multi-Dimensional Vibration Mitigation Materials and Devices

Recent Advances in Multi-Dimensional Vibration Mitigation Materials and Devices

Modeling and experiment study of hydraulically damped rubber mount under larger amplitude excitation at low frequency

Vibration characteristics of multi-dimensional isolator based on 4-PUU parallel mechanism with joint clearance

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