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Dynamicmodeling of awave glider Article

Chun-lin ZHOU, Bo-xing WANG, Hong-xiang ZHOU, Jing-lan LI, Rong XIONG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9, Pages 1295-1304 doi: 10.1631/FITEE.1700294

Abstract: We propose a method to establish a dynamic model for a waveglider, a wave-propelled sea surface vehicleThe vehicle, composed of a surface floatand a submerged glider in sea water, is regarded as a two-particlesystemThe optimal structure parameters usefulfor vehicle designs can also be obtained from the model.We illustratehow to build an analytical dynamics model for the wave glider, whichis a crucial basis forthe vehicle’s motion control.

Keywords： Wave-propelled vehicle Dynamic modeling Sea surface vehicle Wave glider

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Self-propelled automatic chassis of Lunokhod-1: History of creation in episodes

Mikhail MALENKOV

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1, Pages 60-86 doi: 10.1007/s11465-016-0370-5

Abstract:

This report reviews the most important episodes in the history of designing the self-propelled automaticchassis of the first mobile extraterrestrial vehicle in the world, Lunokhod-1.

Keywords： moon rover self-propelled chassis propulsion wheel suspension soil properties cross-country ability

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Effects of thermocline on performance of underwater glider’s power system propelled by ocean thermal

Hai YANG, Jie MA,

Frontiers in Energy 2009, Volume 3, Issue 4, Pages 472-479 doi: 10.1007/s11708-009-0052-7

Abstract: The thermal glider’s changeable volume produces propelling force to power the glider’s descending and ascending through the thermocline. The different depth, thickness, and intensity of the thermocline at different seasons and locations affect the working processes of the glider’s power system. Based on the enthalpy method, a mathematical model of the underwater glider’s power system was established and the time efficiency of operation was introduced, so that the effects of different thermoclines on the underwater glider’s power system were analyzed theoretically. The simulation result shows that the thermocline affects the transition time of the phase change processes of working fluids within the thermal engine tubes. There exist the threshold values of the thermocline’s depth and upper thickness for the power system’s operation. A depth or upper thickness of the thermocline less than the corresponding threshold leads the power system to work abnormally. To keep the power system working efficiently, a glider must be kept in warm surface water for a certain period before it moves through cold water, so that the time efficiency of operation is reduced. A less time efficiency of operation is unfavorable to the thermal glider to penetrate through the ocean currents.

Keywords： mathematical underwater glider system working certain corresponding threshold

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Study on wave rotor refrigerators

Yuqiang DAI, Dapeng HU, Meixia DING

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1, Pages 83-87 doi: 10.1007/s11705-009-0075-y

Abstract: As a novel generation of a rotational gas wave machine, the wave rotor refrigerator (WRR) is an unsteadyA basic limitation on main structural parameters and operating parameters is deduced and the wave diagramIn the DUT Gas Wave Refrigeration Studying and Development Center (GWRSDC) lab, the isentropic efficiency

Keywords： wave rotor refrigeration unsteady flow theory wave diagram

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Prediction of the shear wave velocity

Amoroso SARA

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 1, Pages 83-92 doi: 10.1007/s11709-013-0234-6

Abstract: The paper examines the correlations to obtain rough estimates of the shear wave velocity from non-seismic

Keywords： horizontal stress index shear wave velocity flat dilatometer test cone penetration test

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Lamb wave propagation modeling for structure health monitoring

Xiaoyue ZHANG, Shenfang YUAN, Tong HAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3, Pages 326-331 doi: 10.1007/s11465-009-0045-6

Abstract: A number of different numerical computational techniques have been developed for wave propagation studiesin complex media (LISA/SIM theory), has been effectively applied to numerical simulations of elastic waveThe finite difference equations describing wave propagation used in the LISA/SIM theory are obtained.

Keywords： Lamb wave modeling LISA/SIM theory finite difference equation finite element

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A simple multi-wave algorithm for the uncapacitated facility location problem

Fred GLOVER, Saïd HANAFI, Oualid GUEMRI, Igor CREVITS

Frontiers of Engineering Management 2018, Volume 5, Issue 4, Pages 451-465 doi: 10.15302/J-FEM-2018038

Abstract:

The multi-wave algorithm (Glover, 2016) integrates tabu search and strategic oscillation utilizingWe propose a simple multi-wave algorithm for solving the Uncapacitated Facility Location Problem (UFLP

Keywords： discrete optimization UFLP multi-wave optimization strategic oscillation tabu search

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On subsurface box-shaped lined tunnel under incident SH-wave propagation

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4, Pages 948-960 doi: 10.1007/s11709-021-0740-x

Abstract: study is carried out to sensitize some effective parameters, including frequency content and incident wave

Keywords： box-lined tunnel half-plane BEM surface response SH-wave time-domain

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A simple method for evaluating liquefaction potential from shear wave velocity

Lianyang ZHANG,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2, Pages 178-195 doi: 10.1007/s11709-010-0023-4

Abstract: The simplified procedure using shear wave velocity measurements is increasingly used to evaluate theThis paper develops a simple method for evaluating the liquefaction potential of soils from shear wavefactors considered are the earthquake magnitude, the vertical effective overburden stress, the shear waveThe most important factor has been identified as the shear wave velocity.Neither stress-correction of shear wave velocity nor calculation of cyclic shear stress as in the simplified

Keywords： liquefaction earthquake simple method shear wave velocity case history introduction

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Wave Interaction with a Partial Porous Double-Wall Cylinder

Teng Bin,Li Yucheng,Sun Lu

Strategic Study of CAE 2001, Volume 3, Issue 10, Pages 41-47

Abstract:

A linear analytic solution is derived for wave interaetion with a combined cylinder with a solid interiorNumerical experiments have been carried out to examine the wave force and wave run-up on combined porousrun-up and wave loads on cylinders.Cylinders with whole porous section on the outer column are more suitable for reducing wave loads andwave run-up on cylinders.

Keywords： wave diffraction wave force wave run-up porous structure cylinder

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Empirical study on directional millimeter-wave propagation in vehicle-to-infrastructure communications

Xichen Liu, Lin Yang, Daizhong Yu,362475709@qq.com,eelyang@uestc.edu.cn,15908107465@163.com

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4, Pages 503-516 doi: 10.1631/FITEE.2000464

Abstract: communication research; therefore, in this paper, we carry out a large number of channel measurements in mmWave vehicle-to-infrastructure

Keywords：毫米波；两径模型；均方根时延扩展；功率延迟分布；CI-TRH路径损耗模型

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Analytical solution for SH wave propagating through a graded plate of metamaterial

Jinfeng ZHAO, Yongdong PAN, Zheng ZHONG

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3, Pages 301-307 doi: 10.1007/s11465-011-0238-7

Abstract:

A physical model for the shear horizontal (SH) wave propagating from left-handed material (LHM) throughAfter the comparison of the basic wave equations of the electromagnetic, longitudinal, and SH waves,The shift along with the anti-symmetric profile may provide a way to monitor the wave behavior of the

Keywords： left-handed material (LHM) metamaterial shear horizontal (SH) wave

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Characteristic of the High Energy Density and the Chemical Explosions and Discussion on the Effects of Flood Wave

Zhou Fengjun

Strategic Study of CAE 2000, Volume 2, Issue 12, Pages 45-51

Abstract:

Based on results of radiate-hydrodynamic and TNT charge hydrodynamic blast wave calculations, thein close- in and distance regions of two kinds of explosions and the development of different blast waveAlso, flood wave disasters due to two kind explosions are discussed and great meaning of protection engineeringfor flood wave are described.

Keywords： high energy density explosion chemical explosion shock wave flood wave

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Long March 3 Series Launch Vehicle

Long Lehao

Strategic Study of CAE 1999, Volume 1, Issue 1, Pages 11-18

Abstract:

The background, design approach, system engineering, launch results and technical & development characteristics of LM - 3 series launch vehicles are presented, and the development of launch vehicles in the future is prospected. It is indicated that with advanced performance, these launch vehicles are the main force of commercial heavy lift in China.

Keywords： aerospace heavy lift launch vehicle launch services LM - 3 series launch vehicle

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A review on front end conversion in ocean wave energy converters

Nagulan SANTHOSH,Venkatesan BASKARAN,Arunachalam AMARKARTHIK

Frontiers in Energy 2015, Volume 9, Issue 3, Pages 297-310 doi: 10.1007/s11708-015-0370-x

Abstract: Effective utilization and sustainability of any wave energy harvester depend upon its adaptability inthe front end energy conversions are reviewed in detail which is positioned in the first stage of the waveIf the recent development of these front end energy conversion is well known then developing wave energyThis will be useful to the engineers for speeding up the development of a matured point absorbing type wave

Keywords： wave energy converter point absorbers power take off (PTO) front end energy conversion