Synchronization characteristics in a vibrator-pendulum coupling system with spatial motion

Li, Zhenmin; Li, Chao; Chen, Wei-Hao; Zhang, Wei; Zhang, Xueliang

doi:10.1177/10775463221113662

Cited by 2 publications

(3 citation statements)

References 33 publications

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“…Without considering the road vibration, the vibratory vibrator baseplate will be in direct contact with the ground, and the contact damping stiffness between the baseplate and the ground is c 4 , c 5 , k 4 , k 5 . 17 X 4 , X 5 are displacement of reaction mass and baseplate; Y 4 , Y 5 are velocity of reaction mass and baseplate; Z 4 , Z 5 are acceleration of reaction mass and baseplate; the dynamic equation of the vibration system is as follows:…”

Section: Analysis Of Energy Excitation Effect Of Vibration System Con...mentioning

confidence: 99%

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Study on energy excitation effect and structure optimization of vibratory vibrator considering captured road

Huang

Wang

et al. 2023

Advances in Mechanical Engineering

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This paper focuses on the influence of road weight captured by vibration on vibratory vibrator energy excitation and the optimization of vibratory vibrator baseplate when there is road instead of direct contact between baseplate and the ground. For this purpose, based on the vibration attenuation formula of the foundation surface, the variation law of the captured road weight is obtained. The excitation dynamics model considering the captured road weight is constructed and verified. The energy excitation effect of vibration system is analyzed. By using topology optimization method, the baseplate is optimized, and the comparative study of vibratory vibrator excitation effect before and after optimization is carried out. In the process of energy transmission of the vibrator, the reaction mass will consume most of the energy, the actual output vibratory wave energy is only 5.5% of the total energy. The octagonal I-steel baseplate can reduce its weight by 442 kg while ensuring its rigidity, and the energy excitation effect is relatively improved by 18.2%. The research will provide a reference for improving the energy excitation effect of vibratory vibrator considering the weight of the captured road.

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Section: Analysis Of Energy Excitation Effect Of Vibration System Con...mentioning

confidence: 99%

“…According to the research in Li 17 and Peng, 18 the exciting effect of the vibratory vibrator can be evaluated by the output energy and energy transfer rate.…”

Section: Analysis Of Energy Excitation Effect Of Vibration System Con...mentioning

confidence: 99%

Study on energy excitation effect and structure optimization of vibratory vibrator considering captured road

Huang

Wang

et al. 2023

Advances in Mechanical Engineering

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“…Saad et al 26 and Safaei and Tavakoli 27 discussed the free‐vibration characteristics of circular cylindrical shells with passive constrained‐layer damping, and the influence of the ratio of the elastic modulus of the orthotropic constrained layer, and the complex shear modulus of viscoelastic core on the frequency parameter and loss factor. Li et al 28,29 and Moradi Zirkohi and Shoja‐Majidabad 30 used the carriage vibration noise field test to evaluate the effect of a variety of damping materials on vibration and noise reduction. Abedi et al, 31 Zhu et al, 32 and Qin et al 33 modeled the pipeline as beam and calculated its pipe displacements and peak particle velocities under the action of a dynamic load equivalent to a blast wave.…”

Section: Introductionmentioning

confidence: 99%

Study of the inhibitory effect of a soft cushion on the propagation of pressure pulsation in pumped storage power stations

Yang,

Wang,

Yang

et al. 2023

Earthquake Engineering and Resilience

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High‐frequency pressure pulsations are hydraulic phenomena that are frequently observed in pumped storage power stations. These pulsations can propagate through the steel pipes, concrete lining, and the surrounding rock system, which in turn may have detrimental effects on the environment, such as noise pollution, and relocation of the local residents. This paper proposes a vibration‐damping concept that involves wrapping a local soft cushion layer outside the buried steel pipe; this layer could partially eliminate the pressure fluctuations in the headrace tunnel, thereby reducing the ground vibrations caused by the pressure pulsations. In this study, the finite element method was used to model the propagation of vibrations in the surrounding rock and fluid‐filled pipes, including static simulation of the structure, and dynamic simulation of the surrounding rock. The simulation results suggest that adding an appropriate local soft bedding layer can effectively reduce the ground vibrations by more than 60% and the possible surface noise within the standard vertical vibration norms. The inhibitory effect of the soft cushion on the propagation of vibrations is determined by the wrapping angle, thickness, and material of the bedding layer. This effect increases with increasing wrapping angle and thickness of the bedding layer, and decreases with increasing elastic modulus of the material. After the addition of the bedding layer between the steel pipe and concrete lining, the pressure in the inner pipe is primarily borne by the steel lining rather than the coupling of the steel lining, concrete lining, and the surrounding rock. Hence, the thickness of the part of the steel liner in contact with the soft bedding layer should be increased. In addition, the thickness variations in the steel pipe joints should be smooth to avoid stress concentration.

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Synchronization characteristics in a vibrator-pendulum coupling system with spatial motion

Cited by 2 publications

References 33 publications

Study on energy excitation effect and structure optimization of vibratory vibrator considering captured road

Study on energy excitation effect and structure optimization of vibratory vibrator considering captured road

Study of the inhibitory effect of a soft cushion on the propagation of pressure pulsation in pumped storage power stations

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