Resource Type

Journal Article 108

Year

2023 4

2022 6

2021 8

2020 2

2019 8

2018 3

2017 2

2016 7

2015 3

2014 6

2013 4

2012 16

2010 4

2009 7

2008 6

2007 4

2006 5

2005 2

2004 1

2003 4

open ︾

Keywords

bearing capacity 23

DX pile 10

settlement 7

bearing 6

finite element analysis 4

bearing behavior 3

bifurcation 2

computational 2

dynamic stiffness 2

failure mechanism 2

fault diagnosis 2

numerical analysis 2

process 2

rolling bearing 2

3D mesoscopic modelling 1

3D numerical modeling 1

AR model 1

Active magnetic bearings (AMBs) 1

Bearing 1

open ︾

Search scope:

排序： Display mode:

Numerical analysis and experimental investigation of modal properties for the gearbox in wind turbine

Pengxing YI,Peng HUANG,Tielin SHI

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 388-402 doi: 10.1007/s11465-016-0404-z

Abstract:

Wind turbine gearbox (WTG), which functions as an accelerator, ensures the performance and service life of wind turbine systems. This paper examines the distinctive modal properties of WTGs through finite element (FE) and experimental modal analyses. The study is performed in two parts. First, a whole system model is developed to investigate the first 10 modal frequencies and mode shapes of WTG using flexible multi-body modeling techniques. Given the complex structure and operating conditions of WTG, this study applies spring elements to the model and quantifies how the bearings and gear pair interactions affect the dynamic characteristics of WTGs. Second, the FE modal results are validated through experimental modal analyses of a 1.5 WM WTG using the frequency response function method of single point excitation and multi-point response. The natural frequencies from the FE and experimental modal analyses show favorable agreement and reveal that the characteristic frequency of the studied gearbox avoids its eigen-frequency very well.

Keywords： wind turbine gearbox     modal analysis     finite element analysis     modal frequency     bearing equivalence    

HTML PDF Collect

The calculation of equivalence factor for ecological footprints in China: a methodological note

Moucheng LIU,Wenhua LI,Dan ZAHNG,Ning SU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1015-1024 doi: 10.1007/s11783-014-0670-0

Abstract: Thus, this article calculates equivalence factors on the national and provincial levels in China basedbuilt-up land has an equivalence factor of 1.71, forest and fossil energy land has a factor of 1.41,pasture has a factor of 0.44 and water/fishery 0.35; Finally, the equivalence factor of 6 land areaThe NPP of each ecosystem type varies along with the equivalence factor in different provinces.However, the ranking of the equivalence factors in different provinces remain the same, with that of

Keywords： ecological footprint     equivalence factor     net primary production     biological capacity     land types    

HTML PDF Collect

Laminar-to-Turbulence Transition Revealed Through a Reynolds Number Equivalence Article

Xiao Dong Chen

Engineering 2019, Volume 5, Issue 3,   Pages 576-579 doi: 10.1016/j.eng.2018.09.013

Abstract: In this work, a local Reynolds number equivalence Keywords： Local Reynolds number equivalence     Flow transition from laminar to turbulent mode     Universal law of the    

HTML PDF Collect

Iterative HOEO fusion strategy: a promising tool for enhancing bearing fault feature

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0725-z

Abstract: techniques, the energy operator (EO) and its variants have received considerable attention in the field of bearingTo address these issues, this paper presents a novel EO fusion strategy for enhancing the bearing faultand experimental verifications confirm that the proposed strategy is more effective for enhancing the bearing

Keywords： higher order energy operator     fault diagnosis     manifold learning     rolling element bearing     information    

HTML PDF Collect

New analysis model for rotor-bearing systems based on plate theory

Zhinan ZHANG, Mingdong ZHOU, Weimin DING, Huifang MA

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 4,   Pages 461-473 doi: 10.1007/s11465-019-0525-2

Abstract: The purpose of this work is to develop a new analysis model for angular-contact, ball-bearing systemsThe new analysis model is suitable for static and modal analyses of rotor-bearing systems.

Keywords： rotor-bearing system     rolling element bearing     plate theory     finite element analysis    

HTML PDF Collect

API-based assessment on urban air environment bearing capability in China

Jinnan WANG,Jing ZHANG,Hongqiang JIANG,Yaling LU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 6,   Pages 1049-1055 doi: 10.1007/s11783-014-0662-0

Abstract: By using this new method, the air environmental bearing capability of 333 cities at the prefecture levelThe results show that of the 333 cities 9.6% is of high bearing capability, 34.5% relatively high bearingcapability, 52.6% medium bearing capability, 2.7% low capability, and 0.6% is of weak bearing capability; in terms of regional distribution, the western region is of relatively high air environment bearingChengdu-Chongqing agglomerations are of relatively high carrying capacity while other agglomerations are of medium bearing

Keywords： air pollution index (API)     air environment bearing capability     key city     assessment method    

HTML PDF Collect

Fast emergency control strategy calculation based on dynamic equivalence and integral sensitivity Research Articles

Yi-fan GAO, Jian-quan WANG, Tan-nan XIAO, Dao-zhuo JIANG

Frontiers of Information Technology & Electronic Engineering 2019, Volume 20, Issue 8,   Pages 1119-1132 doi: 10.1631/FITEE.1700389

Abstract: real-time emergency control, a fast transient stability simulation algorithm based on real-time dynamic equivalence

Keywords： Emergency control     Transient stability     Numerical integration     Dynamic equivalence     Integral sensitivity    

HTML PDF Collect

Experimental evaluation of a 35 kVA downdraft gasifier

Ashok Jayawant Rao KECHE, Gaddale AMBA PRASAD RAO

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 300-306 doi: 10.1007/s11708-013-0247-9

Abstract: The optimum value of equivalence ratio was observed to be 0.3134 for achieving the maximum gas conversion

Keywords： biomass     gasification     producer gas     equivalence ratio     total particulate matter     conversion efficiency of    

HTML PDF Collect

The convexity about ultimate bearing hypersurfaces of structures

Chengxi GUO,Tingting GUO

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 4,   Pages 456-461 doi: 10.1007/s11709-016-0334-1

Abstract: The relationship between the convexity on the ultimate bearing surface of a structure and the second-orderHessian matrix composed of the second-order partial derivatives on the hypersurface about the ultimate bearingSome applications in the analysis of bearing capacity of structures were illustrated with examples.The study shows that an evaluation about the bearing capacity state of a complex structure can be madeon the basis of several points on the surface of the ultimate bearing of the structure.

Keywords： service     limit load     ultimate bearing surface     convexity     generalized force     generalized displacement     frame    

HTML PDF Collect

Foundations bearing capacity subjected to seepage by the kinematic approach of the limit analysis

Mehdi VEISKARAMI, Ghasem HABIBAGAHI

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 446-455 doi: 10.1007/s11709-013-0227-5

Abstract: The kinematic approach of the limit analysis was employed to find the upper-bound limit of the bearingIt was found that the bearing capacity has a decreasing trend with increase in the groundwater flow gradientand hence, a reduction factor has been introduced to the third term in the bearing capacity equation

Keywords： foundation     bearing capacity     limit analysis     numerical computation     plasticity     seepage    

HTML PDF Collect

Undrained seismic bearing capacity of strip footing adjacent to a heterogeneous excavation

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 4,   Pages 566-583 doi: 10.1007/s11709-023-0905-x

Abstract: The analysis of the bearing capacity of strip footings sited near an excavation is critical in geotechnicseffects of the geometrical features of the excavation and the soil strength properties on the seismic bearingDesign charts and tables were produced to clarify the relationship between the undrained seismic bearing

Keywords： excavation     finite element limit analysis     heterogeneous soil     strip footing     undrained bearing capacity    

HTML PDF Collect

methane/air mixtures with multiple orifices in a large bore constant volume chamber: effect of air-fuel equivalence

Xiang LI, Wenzheng ZHANG, Zhong HUANG, Dehao JU, Li HUANG, Mingzhi FENG, Xingcai LU, Zhen HUANG

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 483-493 doi: 10.1007/s11708-019-0631-1

Abstract: To investigate the effect of air-fuel equivalence ratio and pre-mixed pressure on pre-chamber TJI ofDifferent initial pressures and air-fuel equivalence ratios were considered to analyze the characteristics

Keywords： marine engine     natural gas     methane     turbulent jet ignition (TJI)     pre-chamber    

HTML PDF Collect

Influence of the Mechanical Seals on the Dynamic Performance of Rotor–Bearing Systems

XU Hua, ZHU Jun

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 96-100 doi: 10.1007/s11465-005-0008-5

Abstract: the transfer matrix method are used to establish the equations for the dynamics performance of rotor bearingTo check the response of the rotor bearing system under unbalance motivation, the Gauss method is usedthat may affect the dynamic performance and forced vibration under unbalance motivation of the rotor bearingThe analysis results show that the mechanical seal more or less has effects on the rotor bearing systemThe mechanical seal has much more effects on the flexible rotor bearing system than on the rigid one.
HTML PDF Collect

Ultimate bearing capacity of strip footing resting on clay soil mixed with tire-derived aggregates

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1016-1024 doi: 10.1007/s11709-021-0751-7

Abstract: use of recycled tire-derived aggregate (TDA) mixed with kaolin as a method of increasing the ultimate bearing

Keywords： kaolin     physical modeling tests     stabilization     numerical modeling    

HTML PDF Collect

Temperature control of transfer roller’s bearing based on finite element analysis

Peng ZHANG, Yourong LI, Han XIAO

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 2,   Pages 215-218 doi: 10.1007/s11465-009-0026-9

Abstract: Second, the sub-model of the fixed end bearing is built and the boundary condition of the sub-model isThe analysis result of the sub-model shows that the temperature of the transfer roller bearing exceeds

Keywords： transfer roller bearing     finite element analysis     sub-model     temperature control    

HTML PDF Collect

Title Author Date Type Operation

Numerical analysis and experimental investigation of modal properties for the gearbox in wind turbine

Pengxing YI,Peng HUANG,Tielin SHI

Journal Article

The calculation of equivalence factor for ecological footprints in China: a methodological note

Moucheng LIU,Wenhua LI,Dan ZAHNG,Ning SU

Journal Article

Laminar-to-Turbulence Transition Revealed Through a Reynolds Number Equivalence

Xiao Dong Chen

Journal Article

Iterative HOEO fusion strategy: a promising tool for enhancing bearing fault feature

Journal Article

New analysis model for rotor-bearing systems based on plate theory

Zhinan ZHANG, Mingdong ZHOU, Weimin DING, Huifang MA

Journal Article

API-based assessment on urban air environment bearing capability in China

Jinnan WANG,Jing ZHANG,Hongqiang JIANG,Yaling LU

Journal Article

Fast emergency control strategy calculation based on dynamic equivalence and integral sensitivity

Yi-fan GAO, Jian-quan WANG, Tan-nan XIAO, Dao-zhuo JIANG

Journal Article

Experimental evaluation of a 35 kVA downdraft gasifier

Ashok Jayawant Rao KECHE, Gaddale AMBA PRASAD RAO

Journal Article

The convexity about ultimate bearing hypersurfaces of structures

Chengxi GUO,Tingting GUO

Journal Article

Foundations bearing capacity subjected to seepage by the kinematic approach of the limit analysis

Mehdi VEISKARAMI, Ghasem HABIBAGAHI

Journal Article

Undrained seismic bearing capacity of strip footing adjacent to a heterogeneous excavation

Journal Article

methane/air mixtures with multiple orifices in a large bore constant volume chamber: effect of air-fuel equivalence

Xiang LI, Wenzheng ZHANG, Zhong HUANG, Dehao JU, Li HUANG, Mingzhi FENG, Xingcai LU, Zhen HUANG

Journal Article

Influence of the Mechanical Seals on the Dynamic Performance of Rotor–Bearing Systems

XU Hua, ZHU Jun

Journal Article

Ultimate bearing capacity of strip footing resting on clay soil mixed with tire-derived aggregates

Journal Article

Temperature control of transfer roller’s bearing based on finite element analysis

Peng ZHANG, Yourong LI, Han XIAO

Journal Article