Parametric Vibration Stability Analysis of a Pyramid Lattice Sandwich Plate Subjected to Pulsatile External Airflow

Cao, Zhiwei; Yao, Guo

doi:10.1007/s10338-022-00367-8

Cited by 2 publications

(1 citation statement)

References 37 publications

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“…To further improve the performance of parallel stabilized platform, it is important to study its vibration characteristics [13][14]. There are three methods to study the vibration characteristics: simulation analysis method [15][16][17], theoretical analysis method [18] and experimental analysis method [19]. The simulation analysis method is to analyze the vibration characteristics after solving the characteristic value of the finite element analysis of the structure [20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Vibration Characteristics of Electro-hydraulic 3-UPS/S Parallel Stabilized Platform

Yuan

Wang

Pang

et al. 2023

Preprint

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With the development of fluid power transmission and control and control technology, using electro-hydraulic driven can significantly improve the load-carrying capacity, stiffness, and control accuracy of the stabilization platforms. However, compared to mechanical driven, electro-hydraulic driven parallel stabilization platform needs to consider the stiffness and damping of the fluid, as well as the coupling effect between the fluid and the structure, making the modal and dynamic response characteristics of the mechanism more complex. Aiming at the above problems, taking the electro-hydraulic driven 3-UPS/S parallel stable platform as the research object, considering the hinge stiffness, the vibration characteristic equation of the mechanism was established by using the virtual work principle. Then the variation characteristics of natural frequency and vibration response with the position of mechanism were analyzed basing on the dynamic equation. Finally, the correctness of the model was verified by modal test and Runge-Kutta methods. This study can provide a theoretical basis for the dynamic design of electro-hydraulic driven parallel mechanisms.

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Section: Introductionmentioning

confidence: 99%

Analysis of Vibration Characteristics of Electro-hydraulic 3-UPS/S Parallel Stabilized Platform

Yuan

Wang

Pang

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

Analysis of Vibration Characteristics of Electro-hydraulic Driven 3-UPS/S Parallel Stabilization Platform

Yuan,

Wang,

Pang

et al. 2024

Chin. J. Mech. Eng.

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With the development of fluid-power transmission and control technology, electro-hydraulic-driven technology can significantly improve the load-carrying capacity, stiffness, and control accuracy of stabilization platforms. However, compared with mechanically driven platforms, the stiffness and damping of the fluid, as well as the coupling effect between the fluid and the structure need to be considered for electro-hydraulic-driven parallel stabilization platforms, making the modal and dynamic response characteristics of the mechanism more complex. With the aim of solving the aforementioned issues, we research the electro-hydraulic driven 3-UPS/S parallel stabilization platform considering the hinge stiffness. Moreover, the characteristic vibration equation of the mechanism is established using the virtual work principle. Subsequently, the variation characteristics of the natural frequency and the vibration response according to the position of the mechanism are analyzed based on the dynamic equation. Finally, the correctness of the model is verified by a modal test and Runge-Kutta methods. This study provides a theoretical basis for the dynamic design of electrohydraulic-driven parallel mechanisms.

show abstract

Parametric Vibration Stability Analysis of a Pyramid Lattice Sandwich Plate Subjected to Pulsatile External Airflow

Cited by 2 publications

References 37 publications

Analysis of Vibration Characteristics of Electro-hydraulic 3-UPS/S Parallel Stabilized Platform

Analysis of Vibration Characteristics of Electro-hydraulic 3-UPS/S Parallel Stabilized Platform

Analysis of Vibration Characteristics of Electro-hydraulic Driven 3-UPS/S Parallel Stabilization Platform

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