Results 11 to 20 of about 1,668 (181)

Buckling of composite cylindrical shells with ovality and thickness variation subjected to hydrostatic pressure

open access: yesDefence Technology, 2022
The initial geometric imperfection is one of the primary factors affecting the buckling behaviors of composite cylindrical shells under hydrostatic pressure.
Zhun Li   +3 more
doaj   +1 more source

Leak Detection and Localization in Multi-Grid Space Using Improved Gaussian Plume Model

open access: yesSensors, 2023
Leak detection and localization of liquid or gas is of great significance to avoid potential danger and reduce the waste of resources. Leak detection and localization methods are varied and uniquely suited to specific application scenarios.
Daquan Li, Gaigai Liu, Zhaoyong Mao
doaj   +1 more source

Shape optimization of a blended-wing-body underwater glider using surrogate-based global optimization method IESGO-HSR

open access: yesScience Progress, 2020
As a novel flying-wing configuration underwater glider, the blended-wing-body underwater glider (BWBUG) has the satisfactory hydrodynamic performance in comparison to the conventional cylindrical autonomous underwater gliders (AUGs).
Pengcheng Ye, Guang Pan
doaj   +1 more source

Numerical Simulation of Nonlinear Flow Based on Element-Free Galerkin Method

open access: yesXibei Gongye Daxue Xuebao, 2019
This paper focuses on the studying on some flow problems of nonlinear based on the Element Free Galerkin method. First the Navier-Stokes equation is discretized with the Galerkin method. The inertial term in the equation is discretized with the method of

doaj   +1 more source

A Method to Reduce Eddy Current Loss of Underwater Wireless Power Transmission by Current Control

open access: yesApplied Sciences, 2022
In recent years, wireless power transmission (WPT) technology based on magnetic resonance has been extensively studied. However, in contrast to that in the air, wireless power transmission in seawater medium will be accompanied by inevitable energy loss,
Jiale Wang, Baowei Song, Yushan Wang
doaj   +1 more source

Collaborative Control of Unmanned Underwater Vehicles [PDF]

open access: yesJournal of Physics: Conference Series, 2021
Abstract This paper targets at urgent issues, which are the search for complex underwater environments and the effective control of underwater seas. Firstly, studies the collaborative control of task-oriented UUV. Secondly, designs reasonable controllers and prove the rendezvous of UUV.
Huailong Wang, Zhenxing Yao, Yinghui Guo
openaire   +1 more source

Optimal design of power generation equipment for autonomous underwater vehicle

open access: yesAdvances in Mechanical Engineering, 2018
Autonomous underwater vehicle with the ability to generate electricity is an effective solution for detecting the ocean. In this article, a vertical-axis current generator for underwater vehicle is designed.
Fen Guo   +3 more
doaj   +1 more source

Influence of geometric imperfections on the axially loaded composite conical shells with and without cutout

open access: yesAIP Advances, 2020
The nonlinear stability analysis of a structure with initial geometric imperfections is very complex, difficult, and unsolved yet in designing. At present, there are no unified design guidelines for imperfection sensitive metal shells (spherical ...
Zhun Li, Yonghui Cao, Guang Pan
doaj   +1 more source

Imperfection sensitivity analysis for a composite bowed-out shell under axial compression

open access: yesAdvances in Mechanical Engineering, 2019
In this article, we present a systematic work to investigate the imperfection sensitivity of composite bowed-out shells with different layup patterns under axial compression. Two types of geometric imperfections, including eigenmode-shaped imperfections (
Zhun Li, Guang Pan, Kechun Shen
doaj   +1 more source

Dynamics Modeling and Motion Simulation of USV/UUV with Linked Underwater Cable

open access: yesJournal of Marine Science and Engineering, 2020
This paper describes a study on the dynamic modeling and the motion simulation of an unmanned ocean platform to overcome the limitations of existing unmanned ocean platforms for ocean exploration.
Sung Min Hong   +2 more
doaj   +1 more source

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