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Numerical investigation of circle defining curve for two-dimensional problem with general boundaries

Chung Nguyen VAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 92-102 doi: 10.1007/s11709-018-0472-8

Abstract: dimensional elasticity problem, boundary value problems domain with the domain completely described by a circulardefining curve.This paper investigates the possibility of using exact geometry to form the exact description of the circulardefining curve and the standard finite element shape function to approximate the defining curve.curve on the scaled boundary method.

Keywords： exact geometry     circular defining curve     general boundaries     SBFEM    

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Scaled boundary finite element method with exact defining curves for two-dimensional linear multi-field

Jaroon RUNGAMORNRAT, Chung Nguyen VAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 201-214 doi: 10.1007/s11709-018-0488-0

Abstract: two-dimensional, linear, second-order, boundary value problems with a domain completely described by a circulardefining curve.together with a properly selected scaling center are utilized to achieve the exact description of the circulardefining curve, exact geometry of the domain, and exact spatial differential operators.

Keywords： multi-field problems     defining curve     exact geometry     general boundary conditions     SBFEM    

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Is there an inverted U-shaped curve?Empirical analysis of the Environmental Kuznets Curve in agrochemicals

Fei LI,Suocheng DONG,Fujia LI,Libiao YANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 2,   Pages 276-287 doi: 10.1007/s11783-014-0700-y

Abstract: cointegration, and panel-based dynamic ordinary least squares to investigate the Environmental Kuznets CurveThis relationship takes on the inverted U-shaped Environmental Kuznets Curve, and the value of the turning

Keywords： Environmental Kuznets Curve     agrochemical     China    

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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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Learning curve of totally thoracoscopic pulmonary segmentectomy

Weibing Wu, Jing Xu, Wei Wen, Yue Yu, Xinfeng Xu, Quan Zhu, Liang Chen

Frontiers of Medicine 2018, Volume 12, Issue 5,   Pages 586-592 doi: 10.1007/s11684-017-0566-z

Abstract: However, data describing the learning curve of TTPS have yet to be obtained.TTPS between September 2010 and December 2013 were retrospectively analyzed to evaluate the learning curveCUSUMOT indicated that the learning curve of TTPS should be more than 72 cases.

Keywords： thoracoscopic     segmentectomy     learning curve     CUSUM    

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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 circular

Keywords： circular plate     frequency     elastic edge     rigid ring     mode switching    

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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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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: 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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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.principle of molding-surface conjugation, the study develops a mathematical model for the tooth alignment curveMoreover, 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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Learning Curve and Its Application in Production Operation al Research

Chen Zhixiang

Strategic Study of CAE 2007, Volume 9, Issue 7,   Pages 82-88

Abstract:

Learning curve is one character function that improves output by theLearning curve can be used to establish scientific cost plan, improve shop flow scheduling, labor quotaThis paper reviews the research literatures, introduces different forms of learning curve, analyzes theircharacters, and discusses the future directions of application of learning curve.

Keywords： learning curve     operational management     behaviors research    

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Title Author Date Type Operation

Numerical investigation of circle defining curve for two-dimensional problem with general boundaries

Chung Nguyen VAN

Journal Article

Scaled boundary finite element method with exact defining curves for two-dimensional linear multi-field

Jaroon RUNGAMORNRAT, Chung Nguyen VAN

Journal Article

Is there an inverted U-shaped curve?Empirical analysis of the Environmental Kuznets Curve in agrochemicals

Fei LI,Suocheng DONG,Fujia LI,Libiao YANG

Journal Article

LEVERAGING LIVESTOCK TO PROMOTE A CIRCULAR FOOD SYSTEM

Zhengxia DOU

Journal Article

Learning curve of totally thoracoscopic pulmonary segmentectomy

Weibing Wu, Jing Xu, Wei Wen, Yue Yu, Xinfeng Xu, Quan Zhu, Liang Chen

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

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

ZHAI Wenjie, LIU Changxiong, LIANG Yingchun

Journal Article

A new method for boring of non-circular holes

ZHANG Kai, HU De-jin

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

Learning Curve and Its Application in Production Operation al Research

Chen Zhixiang

Journal Article