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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: heat preservation cover is installed on the main rolling line, the heat dissipation environment of the transferroller working on the heat preservation cover is changed.First, a globe model of the transfer roller is built for finite element analysis.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

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Vibratory behaviors of Jeffcott system on cylindrical roller bearings

Hao WU, Jianwen WANG, Qi AN

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3, Pages 305-309 doi: 10.1007/s11465-009-0036-7

Abstract: A Jeffcott rotor system of cylindrical roller bearings is studied in detail.Its critical speed is calculated by a new calculation method with roller bearing stiffness and dampingThe influences of bearing parameters, such as the roller length, rotor mass, distance between the bearingsThe results show that with increasing roller length and radial load, the critical speed increases; and

Keywords： roller bearing bearing-rotor system design value critical rotational speed

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Fuzzy cluster analysis of tapered roller bearing vibration

Liu Jinjun,Xia Xintao,Zhang Lihong

Strategic Study of CAE 2008, Volume 10, Issue 7, Pages 112-117

Abstract: using the fuzzy cluster analysis of grey system theory to analysis the test data of type-30204 tapered rollerbearing, the parameters can be classed into three groups by their effects on the vibration., deviation of the roller diameter, etc.The parameters in the last group have the least effect on the vibration of the tapered roller bearingIt can be concluded in this paper that, most parameters of tapered roller bearing have big effect on

Keywords： tapered roller bearing vibration fuzzy cluster analysis

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Rolling-element bearings in China: From ancient times to the 20th century

Lie SUN,Ang LI

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1, Pages 33-43 doi: 10.1007/s11465-016-0373-2

Abstract: At the second stage, a type of simple roller bearing was used for astronomical instruments not laterA similar bearing was also applied to an abridged armillary in the 17th century.At the third stage, the Chinese began studying and using the so-called European-style bearing since the, particularly because of the technology transfer from the Soviet Union in the 1950s.The government launched the “bearing movement” from the 1950s to the 1960s to establish the

Keywords： bearing movement rolling-element bearing China early rolling bearings technology transfer

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Finite element modeling of counter-roller spinning for large-sized aluminum alloy cylindrical parts

Dawei ZHANG, Fan LI, Shuaipeng LI, Shengdun ZHAO

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3, Pages 351-357 doi: 10.1007/s11465-019-0528-z

Abstract: Counter-roller spinning (CRS), where the mandrel is replaced by rollers, is an effective means of manufacturingThe local fine mesh moving with the roller is one of highlights of the model.

Keywords： large-sized cylindrical part counter-roller spinning aluminum alloy finite element method distributed

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New Formulas of Dynamic Characteristic of Hydrostatic Bearing and Its Testified Experiment

Meng Xinzhai,Yang Jianxi,Meng Zhaoyan

Strategic Study of CAE 2003, Volume 5, Issue 3, Pages 62-66

Abstract:

Hydrostatic bearing has many advantages, such as high accuracy of movement, low power consumptionof friction, small deflection of bearing center, high capacity of load-carrying, powerful absorptionAccording to mechanic balance and flow continuity, the transfer function of hydrostatic bearing systemOn the basis of this transfer function, the new formulas of dynamic performances, namely the formulasThe bearing clearance of hydrostatic bearing with new variable, restrictor can be controlled in constant

Keywords： dynamic properties transfer functions dynamic stiffness resonance frequency hydrostatic bearing

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On the improvement design of dynamic characteristics for the roller follower of a variable-speed plate

Hui Ching FAN, Hong Sen YAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1, Pages 5-15 doi: 10.1007/s11465-012-0310-y

Abstract: Then the motion characteristics between the plate cam and its roller follower are derived.

Keywords： cam mechanism variable input speed kinematic design dynamic design optimal design

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Nonlinear dynamic behaviour of a cam mechanism with oscillating roller follower in presence of profile

Walha LASSAAD, Tounsi MOHAMED, Driss YASSINE, Chaari FAKHER, Fakhfakh TAHER, Haddar MOHAMED

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2, Pages 127-136 doi: 10.1007/s11465-013-0254-x

Abstract:

In this paper we investigate the nonlinear dynamic behaviour of a cam mechanism with oscillating rollerThe first one is located between cam and first roller while the second is between second roller and the

Keywords： cam nonlinear behaviour oscillating roller follower profile error

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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

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Road Roller Engineering Based on Chaotic Vibration Mechanics

Long Yunjia,Yang Yong,Wang Congling

Strategic Study of CAE 2000, Volume 2, Issue 9, Pages 76-79

Abstract: for transform theoretical research of chaotic vibration mechanics into technology achievement in road roller

It is proved that the working efficiency of chaotic vibratory roller is 12.2% higher than thatOne type of heavy chaotic vibratory roller (14t) is used in highway development in west China.

Keywords： chaos vibration road roller engineering

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Intelligent compaction theory of high roller compacted concrete dam

Liu Donghai,Li Bingyang,Cui Bo

Strategic Study of CAE 2011, Volume 13, Issue 12, Pages 74-79

Abstract: text-align: justify;">In the paper, the concept and realization process of intelligent compaction for high rollerwas established and a real-time estimation method of compaction quality of the entire work area for rollerThe adaptive adjustment of the roller work parameters was achieved, with the speed, exciting force, theWhat's more, the research provides a new way for the construction quality control of roller compacted

Keywords： roller compacted concrete（RCC）dam quality control intelligent compaction real-time monitoring real-time

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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

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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

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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

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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