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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 circularon the tensile damage generation in the tunnel lining during the seismic action.Furthermore, the tunnel diameter has the deciding effect on the stability of the tunnel structure.of each design factor in cooperation with the numerical simulations explaining the responses of the circulartunnel during seismic actions.

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

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Application of coupled XFEM-BCQO in the structural optimization of a circular tunnel lining subjected

Nazim Abdul NARIMAN, Ayad Mohammad RAMADAN, Ilham Ibrahim MOHAMMAD

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1495-1509 doi: 10.1007/s11709-019-0574-y

Abstract: optimization method (XFEM-BCQO) is adopted to quantify the optimum values of four design parameters for a circulartunnel lining when it is subjected to earthquakes.The parameters are: tunnel lining thickness, tunnel diameter, tunnel lining concrete modulus of elasticityand tunnel lining concrete density.The results of the BCQO method for the maximum design case for the tunnel tensile damage was matching

Keywords： ovaling deformation     monte carlo sampling     XFEM-BCQO     maximum principal stress    

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Numerical simulation of the rockburst processes of a circular tunnel at different dilation angles

Wang Xuebin,Pan Yishan,Zhang Zhihui

Strategic Study of CAE 2010, Volume 12, Issue 2,   Pages 40-46

Abstract:

Rockburst processes of a circular tunnel are modeled by use of FLAC atTo model the tunnel excavation, a FISH function is written and used to delete the elements in the tunnelSecondly, a tunnel is excavated using the written FISH function.phenomenon is localized at V-shaped notches, the angle between a shear band and the tangential line of the tunneldilation angles, the angle is lower and the apparent strain localization phenomenon is localized at the tunnel

Keywords： dilation angle     circular tunnel     rockburst     shear band     V-shaped notch     shear strain     volumetric strain    

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A wind tunnel study on control methods for cable dry-galloping

Hung D. VO,Hiroshi KATSUCHI,Hitoshi YAMADA,Mayuko NISHIO

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 72-80 doi: 10.1007/s11709-015-0309-7

Abstract: To clarify the characteristics of this galloping, wind tunnel test of a cable model with various kindsFurthermore, single spiral wire, double spiral wire and circular ring were found to have high effectiveness

Keywords： dry-galloping     wind-relative angle     single spiral wire     double spiral wire     circular rings    

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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 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.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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Research on Demarcating Method for Deep Tunnel and Shallow Tunnel in Soil

Zhao Zhanchang,Xie Yongli

Strategic Study of CAE 2005, Volume 7, Issue 10,   Pages 84-86

Abstract:

Directed against the demarcating problems of deep tunnel and shallow tunnel in exiting methods, thefeasible by two engineering cases, and is of importantce to lining design and construction of soil tunnel

Keywords： soil tunnel     deep tunnel and shallow tunnel     demarcating method    

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Title Author Date Type Operation

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

Application of coupled XFEM-BCQO in the structural optimization of a circular tunnel lining subjected

Nazim Abdul NARIMAN, Ayad Mohammad RAMADAN, Ilham Ibrahim MOHAMMAD

Journal Article

Numerical simulation of the rockburst processes of a circular tunnel at different dilation angles

Wang Xuebin,Pan Yishan,Zhang Zhihui

Journal Article

A wind tunnel study on control methods for cable dry-galloping

Hung D. VO,Hiroshi KATSUCHI,Hitoshi YAMADA,Mayuko NISHIO

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

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

Research on Demarcating Method for Deep Tunnel and Shallow Tunnel in Soil

Zhao Zhanchang,Xie Yongli

Journal Article