Results 21 to 30 of about 1,605,949 (242)

A Bonded Type Ultrasonic Motor Using the Bending of a Crossbeam

IEEE Access, 2016
This paper proposed a new crossbeam ultrasonic motor, which was made of a cross-shaped metal frame and eight pieces of lead zirconate titanate ceramic plates with a size of 10 mm × 3 mm × 1 mm.
Dongmei Xu, Yingxiang Liu, Junkao Liu, Weishan Chen   +3 more
doaj   +1 more source

Pivot Stiffness Effect on Transient Dynamic Characteristic of Tilting Pad Journal Bearing-Rotor System Passing through Critical Speed

Lubricants, 2023
Tilting pad journal bearings (TPJBs) are widely applied in the high-speed rotor system whose working speed is higher than its critical speed due to excellent hydrodynamic lubrication and stability.
Yingze Jin, Qiuli Niu, Yuanpeng Qu, Xiaoyang Yuan   +3 more
doaj   +1 more source

Research on the Vibration Characteristic of a Seawater Hydraulic Piston Pump System and Vibration Reduction Approach

IEEE Access, 2021
Seawater hydraulic piston pump has been widely used in ocean engineering and become a key power component for underwater equipment due to its inherent characteristic such as energy conservation and environment friendly.
Zuti Zhang, Yunzhi Liang, Kai Zhao, Xinping Long, Hanyang Liu   +4 more
doaj   +1 more source

Reliability Analysis of Vibration Characteristic for Turbine Blisk in Complex Field

Journal of Harbin University of Science and Technology, 2018
In order to study the effect of complex field on the vibration characteristics and reliability of aero engine turbine blisk，the mathematical model of modal analysis was established based on vibration theory and finite element method which considering ...
ZHANG Chun-yi, LIU Bao-sheng, WANG Ai-hua, LI Zhi-fei, SUN Tian, SUN Xu-dong   +5 more
doaj   +1 more source

Experimental Study on Vibration Characteristics of Unit-Plate Ballastless Track Systems Laid on Long-Span Bridges Using Full-Scale Test Rigs

Sensors, 2020
In this work, we present a series of hammering tests on full-scale unit-plate ballastless tracks used for long-span bridges. There is no denying that it is a new attempt to pave ballastless tracks on high-speed railway long-span bridges; the related ...
Weiqi Zheng, Xingwang Sheng, Zhihui Zhu, Tianjing Luo, Zecheng Liu   +4 more
doaj   +1 more source

Fluid-Structure Interaction Vibration Characteristics Analysis of Thick-Walled Pressurized Fluid-Filled Pipes

水下无人系统学报
The theoretical derivation and frequency-domain solution for axial fluid-structure interaction vibration of thick-walled pressurized fluid-filled pipes in marine engineering were carried out.
Hongzhen ZHU, Jianghai WU, Yudong SUN
doaj   +1 more source

Study on Rubbing-Induced Vibration Characteristics Considering the Flexibility of Coated Casings and Blades

Machines
Rubbing between a blade and its coated casing is one of the main failures in aero-engine systems. This paper aims to study the effects of coated casings on rubbing-induced dynamic responses considering the flexibility of the coated casing and the ...
Yong Zhang, Shuhua Yang, Xingyu Tai, Hui Ma, Hong Guan, Qinqin Mu, Lin Qu, Xiangfu Ding   +7 more
doaj   +1 more source

Analysis and selection of eigenvalues of vibration signals in cutting tool milling

Advances in Mechanical Engineering, 2022
This paper designs an experimental scheme to monitor the tool wear state by extracting the vibration signal of tool wear. The data acquisition and signal processing hardware includes a T-type cutting tool, a vibration sensor, an amplifier, a data ...
Liqiang Wang, Xiao Li, Bo Shi, Munyaradzi Munochiveyi   +3 more
doaj   +1 more source

Modal Density Evaluation of a Fluid-Loaded Free-Damping Stiffened Plate

Journal of Marine Science and Engineering
An analytical method is developed to evaluate the modal density of a fluid-loaded stiffened plate with a damping layer. The effects of the damping layer, ribs, and fluid load on the structure’s equivalent bending rigidity and surface density are analyzed.
Zhiwei Guo, Yipeng Cheng, Meiping Sheng
doaj   +1 more source

Characteristic modes of vibration of Q-balls

EPJ Web of Conferences, 2018
In this report, based on [1], we study analytically small perturbations of classically stable Q-balls in 3+1 dimensions. Models with flat and polynomial potentials are considered.
Kovtun Andrei, Nugaev Emin, Shkerin Andrey   +2 more
doaj   +1 more source