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Key Technologies and Applications of the Design and Manufacturing of Non-Circular TBMs

Jianbin Li

Engineering 2017, Volume 3, Issue 6,   Pages 905-914 doi: 10.1016/j.eng.2017.12.002

Abstract: At present, because conventional circular TBMs cannot completely meet the requirements of undergroundspace exploitation regarding the cross-section and space-utilization ratio, non-circular TBMs, whichThis paper first presents the technical features and development status of non-circular TBMs.TBM, in order to provide a set of feasible solutions for the design, manufacture, and construction of non-circularRelevant engineering practice shows that non-circular TBMs with customized design and manufacture have

Keywords： Non-circular TBMs     Rectangular pipe-jacking machine     Horseshoe-shaped TBM     Underground space exploitation    

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A new method for boring of non-circular holes

ZHANG Kai, HU De-jin

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4,   Pages 456-460 doi: 10.1007/s11465-006-0058-3

Abstract: mechanism composed of an electromagnetic stator and an electromagnetic rotor has been developed for boring non-circular

Keywords： electromagnetic actuation     control method     displacement     flexible body     revolving electromagnetic    

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LEVERAGING LIVESTOCK TO PROMOTE A CIRCULAR FOOD SYSTEM

Zhengxia DOU

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1,   Pages 188-192 doi: 10.15302/J-FASE-2020370

Abstract: animal-derived food is slowing while attention is growing over the role of livestock farming in an enhanced circular
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LEVERAGING LIVESTOCK TO PROMOTE A CIRCULAR FOOD SYSTEM

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1,

Abstract: animal-derived food is slowing while attention is growing over the role of livestock farming in an enhanced circular
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Circular economy：ideas and innovation

Jin Yong,Feng Zhijun,Chen Dingjiang

Strategic Study of CAE 2010, Volume 12, Issue 1,   Pages 4-11

Abstract: "text-align: justify;">It has been over a decade since China paid close attention to the concept of circularDuring this period the country made promoting circular economy as one of the basic national developmentimportant ideas and theories, which could be used as general guidelines for innovation to boost the circular

Keywords： circular economy     circular economics    

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Frequencies of circular plate with concentric ring and elastic edge support

Lokavarapu Bhaskara RAO,Chellapilla Kameswara RAO

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2,   Pages 168-176 doi: 10.1007/s11465-014-0299-5

Abstract:

Exact solutions for the flexural vibrations of circular plates having elastic edge conditions alongValues of frequency parameter for the considered circular plate are computed for different sets of valuesrotational and linear restraints and the radius of the rigid ring support on the vibration behavior of circularplates are studied over a wide range of non-dimensional parametric values.

Keywords： circular plate     frequency     elastic edge     rigid ring     mode switching    

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Knockdown of a Specific Circular Non-coding RNA Significantly Suppresses Osteosarcoma Progression Article

Shidong Wang, Hongliang Zhang, Bo Li, Chenglong Chen, Tingting Ren, Yi Huang, Kai Liu, Jingjing Li, Wei Guo

Engineering 2023, Volume 21, Issue 2,   Pages 187-193 doi: 10.1016/j.eng.2021.12.007

Abstract: Abnormally expressed non-coding circular RNAs (circRNAs) are crucial for the occurrence and development

Keywords： Non-coding RNA     Osteosarcoma     CircRNA     Molecular mechanism     Knockdown    

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Numerical analysis of hydrodynamic process of circular-translational-moving polishing (CTMP)

ZHAI Wenjie, LIU Changxiong, LIANG Yingchun

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 441-448 doi: 10.1007/s11465-008-0074-6

Abstract: By keeping a pad moving relative to a wafer along a circular path without rotation, we developed a polishingtechnique called circular-translational-moving polishing (CTMP), which permits multidirectional polishing

Keywords： numerical analysis     practical CTMP     circular-translational-moving polishing     CTMP     different    

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Fundamental buckling of circular plates with elastically restrained edges and resting on concentric rigid

Lokavarapu Bhaskara Rao, Chellapilla Kameswara Rao

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 3,   Pages 291-297 doi: 10.1007/s11465-013-0255-9

Abstract:

This work presents the existence of buckling mode switching with respect to the radius of concentric rigid ring support. The buckling mode may not be axisymmetric as previously assumed. In general, the plate may buckle in an axisymmetric mode but when the radius of the ring support becomes small, the plate may buckle in an asymmetric mode. The optimum radius of the concentric rigid ring support for maximum buckling load is also determined. Introducing internal rigid ring support, when placed at an optimal position increases the elastic buckling load capacity by 149.39 percent. The numerical results obtained are in good agreement with the previously published data.

Keywords： buckling     circular plate     elastically restrained edge     rigid ring support     mode switching    

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Surface accuracy optimization of mechanical parts with multiple circular holes for additive manufacturing

Jinghua XU, Hongsheng SHENG, Shuyou ZHANG, Jianrong TAN, Jinlian DENG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 133-150 doi: 10.1007/s11465-020-0610-6

Abstract: Circular hole, especially spatial non-planar hole set is the typical feature and working surface of mechanicalmachining methods, additive manufacturing (AM) technology can decrease the surface accuracy errors of circularHowever, an accuracy error may still exist on the surface of circular holes fabricated by AM due to theThis study proposes a surface accuracy optimization approach for mechanical parts with multiple circularThird, the corresponding weights of the circular holes are calculated with the TFN analytic hierarchy

Keywords： surface accuracy optimization     multiple circular holes     additive manufacturing (AM)     part build orientation    

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Carbon performance evaluation model from the perspective of circular economy—The case of Chinese thermal

Zhifang ZHOU, Jinhao LIU, Huixiang ZENG, Mengmeng XU, Shihui LI

Frontiers of Engineering Management 2022, Volume 9, Issue 2,   Pages 297-311 doi: 10.1007/s42524-020-0143-z

Abstract: carbon resource (energy) input, cycle, output, and carbon management by incorporating the principles of circular

Keywords： circular economy     carbon performance     comprehensive evaluation     thermal power enterprise    

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Mathematical model and manufacture programming of loxodromic-type normal circular-arc spiral bevel gear

Zhenyun DUAN, Houjun CHEN, Zhilan JU, Jian LIU

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3,   Pages 312-321 doi: 10.1007/s11465-012-0308-5

Abstract:

In this paper, loxodromic-type normal circular-arc spiral bevel gear is proposed as a novel applicationof the circular-arc tooth profile at the gear transmission with intersecting axes.Moreover, a pair of loxodromic-type normal circular-arc spiral bevel gears is manufactured on computer

Keywords： loxodrome     circular-arc tooth profile     Wildhaber-Novikov (W-N) gear     spiral bevel gear    

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Experimental investigation on heat transfer effect of conical strip inserts in a circular tube under

M. ARULPRAKASAJOTHI,K. ELANGOVAN,K. HEMA CHANDRA REDDY,S. SURESH

Frontiers in Energy 2016, Volume 10, Issue 2,   Pages 136-142 doi: 10.1007/s11708-015-0389-z

Abstract: The aim of this paper is to observe the Nusselt number and friction factor behavior of the circular tubewith conical strip inserts as turbulators in a laminar flow condition, using staggered and non-staggeredIt is observed that the strip geometry has a major effect on the thermal performance of the circular

Keywords： Nusselt number     friction factor     conical strip    

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Global sensitivity analysis of certain and uncertain factors for a circular tunnel under seismic action

Nazim Abdul NARIMAN, Raja Rizwan HUSSAIN, Ilham Ibrahim MOHAMMAD, Peyman KARAMPOUR

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1289-1300 doi: 10.1007/s11709-019-0548-0

Abstract: which have unrevealed rational effects on the generation of tensile damage and the stability of the circularof each design factor in cooperation with the numerical simulations explaining the responses of the circular

Keywords： shear waves     Sobol’s sensitivity indices     maximum principal stress     maximum overall displacement     tensile damage    

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Natural convection heat transfer of water in a horizontal circular gap

SU Guanghui, WU Yingwei, Kenichiro Sugiyama

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 167-173 doi: 10.1007/s11708-007-0021-y

Abstract: An experimental study on the natural convection heat transfer on a horizontal downward facing heated surface in a water gap was carried out under atmospheric pressure conditions. A total of 700 experimental data points were correlated using Rayleigh versus Nusselt number in various forms, based on different independent variables. The effects of different characteristic lengths and film temperatures were discussed. The results show that the buoyancy force acts as a resistance force for natural convection heat transfer on a downward facing horizontal heated surface in a confined space. For the estimation of the natural convection heat transfer under the present conditions, empirical correlations in which Nusselt number is expressed as a function of the Rayleigh number, or both Rayleigh and Prandtl numbers, may be used. When it is accurately predicted, the Nusselt number is expressed as a function of the Rayleigh and Prandtl numbers, as well as the gap width-to-heated surface diameter ratio; and uses the temperature difference between the heated surface and the ambient fluid in the definition of Rayleigh number. The characteristic length is the gap size and the film temperature is the average fluid temperature.

Keywords： function     diameter     different independent     different characteristic     horizontal downward    

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Title Author Date Type Operation

Key Technologies and Applications of the Design and Manufacturing of Non-Circular TBMs

Jianbin Li

Journal Article

A new method for boring of non-circular holes

ZHANG Kai, HU De-jin

Journal Article

LEVERAGING LIVESTOCK TO PROMOTE A CIRCULAR FOOD SYSTEM

Zhengxia DOU

Journal Article

LEVERAGING LIVESTOCK TO PROMOTE A CIRCULAR FOOD SYSTEM

Journal Article

Circular economy：ideas and innovation

Jin Yong,Feng Zhijun,Chen Dingjiang

Journal Article

Frequencies of circular plate with concentric ring and elastic edge support

Lokavarapu Bhaskara RAO,Chellapilla Kameswara RAO

Journal Article

Knockdown of a Specific Circular Non-coding RNA Significantly Suppresses Osteosarcoma Progression

Shidong Wang, Hongliang Zhang, Bo Li, Chenglong Chen, Tingting Ren, Yi Huang, Kai Liu, Jingjing Li, Wei Guo

Journal Article

Numerical analysis of hydrodynamic process of circular-translational-moving polishing (CTMP)

ZHAI Wenjie, LIU Changxiong, LIANG Yingchun

Journal Article

Fundamental buckling of circular plates with elastically restrained edges and resting on concentric rigid

Lokavarapu Bhaskara Rao, Chellapilla Kameswara Rao

Journal Article

Surface accuracy optimization of mechanical parts with multiple circular holes for additive manufacturing

Jinghua XU, Hongsheng SHENG, Shuyou ZHANG, Jianrong TAN, Jinlian DENG

Journal Article

Carbon performance evaluation model from the perspective of circular economy—The case of Chinese thermal

Zhifang ZHOU, Jinhao LIU, Huixiang ZENG, Mengmeng XU, Shihui LI

Journal Article

Mathematical model and manufacture programming of loxodromic-type normal circular-arc spiral bevel gear

Zhenyun DUAN, Houjun CHEN, Zhilan JU, Jian LIU

Journal Article

Experimental investigation on heat transfer effect of conical strip inserts in a circular tube under

M. ARULPRAKASAJOTHI,K. ELANGOVAN,K. HEMA CHANDRA REDDY,S. SURESH

Journal Article

Global sensitivity analysis of certain and uncertain factors for a circular tunnel under seismic action

Nazim Abdul NARIMAN, Raja Rizwan HUSSAIN, Ilham Ibrahim MOHAMMAD, Peyman KARAMPOUR

Journal Article

Natural convection heat transfer of water in a horizontal circular gap

SU Guanghui, WU Yingwei, Kenichiro Sugiyama

Journal Article