Resource Type

Journal Article 30

Year

2023 4

2022 2

2021 3

2020 3

2019 1

2014 3

2012 2

2011 2

2010 1

2009 1

2007 2

2006 3

2001 3

open ︾

Keywords

fracturing 2

gas distributor 2

inert particles 2

ANSYS/LS-DYNA 1

B-spline 1

Benefit-linked mechanism 1

CFRP 1

CRD method 1

Divided charge 1

Glasgow 1

Hole filling 1

Jiangyin Bridge 1

Moderate long hole bench blasting 1

Numerical simulation 1

PDI 1

PEDOT:PLS 1

Stereo matching 1

The scallop moderate longhole blasting 1

Three-dimensional (3D) point cloud 1

open ︾

Search scope:

排序： Display mode:

Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric

Junhong GUO, Zixing LU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 296-300 doi: 10.1007/s11465-011-0236-9

Abstract: technique of conformal mapping, the problem of two non-symmetrical collinear cracks emanating from an ellipticalhole in a piezoelectric solid is investigated under remotely uniform in-plane electric loading and anti-planemechanical loading, which allowed us to take the electric field inside the hole and cracks into account

Keywords： piezoelectric materials     elliptical hole     semi-permeable crack     energy release rate     analytic solution    

HTML PDF Collect

Design of ultrasonic elliptical vibration cutting system for tungsten heavy alloy

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0715-1

Abstract: In this study, a high-performance ultrasonic elliptical vibration cutting (UEVC) system is developedA cutting tool is installed at the end of the ultrasonic vibration unit to output the ultrasonic elliptical

Keywords： tungsten heavy alloy     ultrasonic elliptical vibration cutting     Timoshenko’s theory     resonant mode of    

HTML PDF Collect

Static and dynamic analysis of functionally graded fluid-infiltrated porous skew and elliptical nanoplates

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 477-502 doi: 10.1007/s11709-023-0918-5

Abstract: free and forced vibration responses of functionally graded fluid-infiltrated porous (FGFP) skew and elliptical

Keywords： static bending     free and forced vibrations     nonlocal theory     isogeometric analysis     fluid-infiltrated porous nanoplates    

HTML PDF Collect

Improving hole transfer of boron nitride quantum dots modified PDI for efficient photodegradation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 11,   Pages 1718-1727 doi: 10.1007/s11705-023-2319-7

Abstract: In recent years, organic photocatalyst under visible-light absorption has shown significant potential for solving environmental problems. However, it is still a great challenge for constructing a highly active organic photocatalyst due to the low separation efficiency of photogenerated carriers. Herein, an effective and robust photocatalyst perylene-3,4,9,10-tetracarboxylic diamide/boron nitride quantum dots (PDI/BNQDs), consisting of self-assemble PDI with π–π stacking structure and BNQDs, has been constructed and researched under visible light irradiation. The PDI/BNQDs composite gradually increases organic pollutant photodegradation with the loading amount of BNQDs. With 10 mL of BNQDs solution added (PDI/BNQDs-10), the organic pollutant photodegradation performance reaches a maximum, about 6.16 times higher with methylene blue and 1.68 times higher with ciprofloxacin than that of pure PDI supramolecular. The enhancement is attributed to improved separation of photogenerated carriers from self-assembled PDI by BNQDs due to their preeminent ability to extract holes. This work is significant for the supplement of PDI supramolecular composite materials. We believe that this photocatalytic design is capable of expanding organic semiconductors’ potential for their applications in photocatalysis.

Keywords： PDI     boron nitride     quantum dots     photocatalysis     hole transfer    

HTML PDF Collect

Elliptical lobe shape gerotor pump design to minimize wear

Mohammad Reza KARAMOOZ RAVARI

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 4,   Pages 429-434 doi: 10.1007/s11465-011-0247-6

Abstract: In this paper first mathematical equations for elliptical lobe shape rotors profile and curvature of

Keywords： gerotor pump     elliptical lobe shape pump     wear rate proportional factor (WRPF)     specific flow    

HTML PDF Collect

Analysis of stability and nonlinear response of rotor system with elliptical sliding bearing supports

LU Yanjun, LIU Heng, YU Lie, LI Qi, JIANG Ming, ZHANG Zhiyu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 37-45 doi: 10.1007/s11465-007-0006-x

Abstract: Based on the variational constraint approach, the variational form of Reynolds equation in hydrodynamic lubrication is revised continuously to satisfy certain constraints in the cavitation zone of oil film field. According to the physical characteristic of oil film, an eight-node isoparametric finite element method is used to convert the revised variational form of Reynolds equation to a discrete form of finite dimensional algebraic variational equation. By this approach, a perturbance equation can be obtained directly on the finite element equation. Consequently, nonlinear oil film forces and their Jacobian matrices are calculated simultaneously, and compatible accuracy is obtained without increasing the computational costs. A method, which is a combination of predictor corrector mechanism and Newton Raphson method, is presented to calculate equilibrium position and critical speed corresponding to Hopf bifurcation point of bearing-rotor system, as by-product dynamic coefficients of bearing are obtained. The timescale, i.e., the unknown whirling period of Hopf bifurcation solution of bearing-rotor system is drawn into the iterative process using Poincar?Newton Floquet method. The stability of the Hopf bifurcation solution can be detected when estimating Hopf bifurcation solution and its periods. The nonlinear unbalanced periodic responses of the system are obtained by using PNF method and path-following technique. The local stability and bifurcation behaviors of periodic motions are analyzed by Floquet theory. Chaotic motions are analyzed by Lyapunov exponents. The numerical results revealed the rich and complex nonlinear behavior of the system, such as periodic, quasiperiodic, jumped solution, chaos, and coexistence of multisolution, and so on.

Keywords： computational     corrector mechanism     predictor corrector     multisolution     quasiperiodic    

HTML PDF Collect

The influence of hand hole on the ultimate strength and crack pattern of shield tunnel segment joints

Shaochun WANG, Xi JIANG, Yun BAI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1200-1213 doi: 10.1007/s11709-019-0546-2

Abstract: The hand hole acts as a weak point and initial damage in the segment joint especially when the circumferentialThe experiment results show that the hand hole becomes the weakest point of the segment joint under ultra-highDifferent types and sizes of the hand hole have different degree of influences on the structural behavior

Keywords： shield tunneling     structural synthetic fiber concrete     hand hole     segment joint     ultimate bearing capacity    

HTML PDF Collect

characteristic evaluation and interpolation reconstruction for surface topography of drilled composite hole

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 840-854 doi: 10.1007/s11465-021-0643-5

Abstract: improved fractal interpolation model is proposed to reconstruct the surface topography of composite holeHole profiles in 24 directions are measured.The maximum and minimum fractal dimension of the hole wall are 1.36 and 1.07, whereas the maximum and

Keywords： surface topography     fractal evaluation     fractal interpolation     reconstruction     composite    

HTML PDF Collect

Effects of Structure of Opening Hole in Gas Distributor on Detained Mass of Material for Fluidized Drying

Liu Wei,Tang Wencheng

Strategic Study of CAE 2006, Volume 8, Issue 6,   Pages 41-43

Abstract: In order to acquire the effect law of structure of opening hole in gas distributor on detained mass ofThe curves of detained mass of material for drier with vertical-hole distributor and tithed-hole distributorBased on the result, the relationship data of drier with tilted-hole distributor were determined betweenthe production capacity and the hole ratio of distributor.In addition, changing the hole shape of distributor from vertical-hole to tilted-hole and adding the

Keywords： inert particles     fluidized drying     gas distributor     hole shape     hole ratio     detained mass of material    

HTML PDF Collect

Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber

Guofeng MA, Renke KANG, Zhigang DONG, Sen YIN, Yan BAO, Dongming GUO

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 538-546 doi: 10.1007/s11465-020-0598-y

Abstract: characteristics, CFRP composites are considered difficult-to-cut materials and are prone to generating serious holeFurthermore, LTC-UAD can decrease the delamination and burr factors and improve the surface quality of the hole

Keywords： longitudinal–torsional coupled     ultrasonically drilling     CFRP     thrust force     hole quality    

HTML PDF Collect

Blasting Technologies of Decreasing Vibration in Subway Tunnel Underpass Adjacent Upper Buildings

Fang Junbo

Strategic Study of CAE 2014, Volume 16, Issue 11,   Pages 58-64

Abstract: , in order to insure the safety of the upper buildings, technologies of parallel cut with big empty hole

Keywords： blasting design     parallel cut     big empty hole     delay- time initiation     short- hole blasting    

HTML PDF Collect

Effects of Structure of Opening Hole in Gas Distributor on Drying Property for Fluidized Bed Drier

Liu Wei,Tang Wencheng

Strategic Study of CAE 2006, Volume 8, Issue 2,   Pages 47-50

Abstract: the hydromechanics and heat transfer property of inert particles fluidized bed drier between vertical-holedistributor and titled-hole distributor, the drying processe of detergent suspending liquor was experimentedThe experimental results show that the structure of opening hole in gas distributor has a dual effectCompared with vertical-hole distributor, titled-hole distributor will increase the flow resistance of

Keywords： gas distributor     structure with opening hole     inert particles     fluidized bed     drying property    

HTML PDF Collect

Probabilistic analysis of secant piles with random geometric imperfections

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 682-695 doi: 10.1007/s11709-021-0703-2

Abstract: An ultrasonic cross-hole test was performed during the construction of secant piles in a launching shaft

Keywords： secant piles     ultrasonic cross-hole testing     probabilistic analysis     reliability-based design     random    

HTML PDF Collect

The Vibration Testing Analysis of Chamber & Deep-hole Pre-splitting Blasting

Shen Zhenyu,Wang Xuguang,Yu Yalun,Liu Honggang

Strategic Study of CAE 2006, Volume 8, Issue 3,   Pages 70-74

Abstract: >The vibration testing analysis of blasting in Tai-Chang freeway show that it is chamber & deep-hole

Keywords： chamber blasting     deep-hole pre-splitting blasting     blasting vibration     vibration testing analysis    

HTML PDF Collect

Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1222-1237 doi: 10.1007/s11709-021-0773-1

Abstract: The influence of closed and open surface flaws on the stress distribution and failure in rock specimens is investigated. Heterogeneous finite element models are developed to simulate the compression tests on flawed rock specimens. The simulated specimens include those with closed flaws and those with open flaws on the surface. Systematic analyses are conducted to investigate the influences of the flaw inclination, friction coefficient and the confining stress on failure behavior. Numerical results show significant differences in the stress, displacement, and failure behavior of the closed and open flaws when they are subjected to pure compression; however, their behaviors under shear and tensile loads are similar. According to the results, when compression is the dominant mode of stress applied to the flaw surface, an open flaw may play a destressing role in the rock and relocate the stress concentration and failure zones. The presented results in this article suggest that failure at the rock surface may be managed in a favorable manner by fabricating open flaws on the rock surface. The insights gained from this research can be helpful in managing failure at the boundaries of rock structures.

Keywords： surface flaw     heterogeneity     circular hole     numerical modeling     relative displacement    

HTML PDF Collect

Title Author Date Type Operation

Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric

Junhong GUO, Zixing LU

Journal Article

Design of ultrasonic elliptical vibration cutting system for tungsten heavy alloy

Journal Article

Static and dynamic analysis of functionally graded fluid-infiltrated porous skew and elliptical nanoplates

Journal Article

Improving hole transfer of boron nitride quantum dots modified PDI for efficient photodegradation

Journal Article

Elliptical lobe shape gerotor pump design to minimize wear

Mohammad Reza KARAMOOZ RAVARI

Journal Article

Analysis of stability and nonlinear response of rotor system with elliptical sliding bearing supports

LU Yanjun, LIU Heng, YU Lie, LI Qi, JIANG Ming, ZHANG Zhiyu

Journal Article

The influence of hand hole on the ultimate strength and crack pattern of shield tunnel segment joints

Shaochun WANG, Xi JIANG, Yun BAI

Journal Article

characteristic evaluation and interpolation reconstruction for surface topography of drilled composite hole

Journal Article

Effects of Structure of Opening Hole in Gas Distributor on Detained Mass of Material for Fluidized Drying

Liu Wei,Tang Wencheng

Journal Article

Hole quality in longitudinal–torsional coupled ultrasonic vibration assisted drilling of carbon fiber

Guofeng MA, Renke KANG, Zhigang DONG, Sen YIN, Yan BAO, Dongming GUO

Journal Article

Blasting Technologies of Decreasing Vibration in Subway Tunnel Underpass Adjacent Upper Buildings

Fang Junbo

Journal Article

Effects of Structure of Opening Hole in Gas Distributor on Drying Property for Fluidized Bed Drier

Liu Wei,Tang Wencheng

Journal Article

Probabilistic analysis of secant piles with random geometric imperfections

Journal Article

The Vibration Testing Analysis of Chamber & Deep-hole Pre-splitting Blasting

Shen Zhenyu,Wang Xuguang,Yu Yalun,Liu Honggang

Journal Article

Analysis of stress and failure in rock specimens with closed and open flaws on the surface

Journal Article