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Function-geometry integrated precision machining methodsand technologies for high performance workpieces

Guo Dongming

Strategic Study of CAE 2011, Volume 13, Issue 10,   Pages 47-57

Abstract: The machining of these key parts has changed from pure geometric accuracy requirements to performance-geometryDue to the case that the part performance has complex coupled effect with many factors such as part geometryIt provides an effective reference and guidance for the establishment of performance-geometry integrated

Keywords： high performance     function-geometry integration     precision machining     difficult-to-cut material     complex    

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A study on Role and Function of Technology Integration Organizations in Engineering

Wang Liancheng

Strategic Study of CAE 2002, Volume 4, Issue 4,   Pages 16-21

Abstract:

Along with scale expanding and complexity enhancing of engineering object system, technology integration

Keywords： engineering     engineering system     engineering system theory     engineering organization     system integration    

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Russian school of the theory and geometry of gearing: Its origin and golden period (1935 --1975)

Dmitry BABICHEV,Sergey LAGUTIN,Natalya BARMINA

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1,   Pages 44-59 doi: 10.1007/s11465-015-0360-z

Abstract: second half of the twentieth century, Soviet scientists were among the world leaders in the theory and geometry

Keywords： theory of gearing (TG)     gear geometry     generating surface     gear synthesis     gear analysis    

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A new proof of Honeycomb Conjecture by fractal geometry methods

Tong ZHANG, Kai DING

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 367-370 doi: 10.1007/s11465-013-0273-7

Abstract:

Based on fractal geometry, we put forward a concise and straightforward method to prove Honeycomb

Keywords： Honeycomb Conjecture     fractal geometry     hierarchical fractal structure    

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Transmission probability method based on triangle meshes for solving the unstructured geometry neutron

WU Hongchun, LIU Pingping, ZHOU Yongqiang, CAO Liangzhi

Frontiers in Energy 2007, Volume 1, Issue 2,   Pages 158-166 doi: 10.1007/s11708-007-0020-z

Abstract: The fuel assembly or core with unstructured geometry is frequently used in the advanced reactor.The triangle meshes are most useful for expressing the complicated unstructured geometry.though the finite element method and Monte-Carlo method are well suited for solving the unstructured geometryThis code was applied to the hybrid fuel geometry, and compared with the results of the MCNP code and

Keywords： unstructured geometry     assembly     transmission probability     TPM     rectangular    

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Experimental studies of ash film fractions based on measurement of cenospheres geometry in pulverized

Siqi LIU, Yanqing NIU, Liping WEN, Yang LIANG, Bokang YAN, Denghui WANG, Shi’en HUI

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 91-98 doi: 10.1007/s11708-020-0806-9

Abstract: A scanning electron microscope (SEM) and cross-section analysis have been used to study the geometry

Keywords： ash film fraction     cenospheres     coal combustion     fly ash    

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Development Strategy for Precision Manufacturing of Composite Components Facing 2035

Shan Zhongde, SongWenzhe, Fan Congze,Wang Jun

Strategic Study of CAE 2023, Volume 25, Issue 1,   Pages 113-120 doi: 10.15302/J-SSCAE-2023.07.002

Abstract:

Advanced composite materials exhibit advantages of high specific strength, high specific modulus, and excellent designability. They are widely used in aerospace, rail transit, and other fields, and are strategic resources for industrially developed countries. Ensuring and improving the supply capacity of advanced composite materials and making breakthroughs in the design and forming, processing and assembling, testing and repairing technologies of large and complex composite components are of strategic significance in strengthening China’s manufacturing sector. In this study, the current status and trends of precision manufacturing of composite components are analyzed, and the key technologies and equipment for precision manufacturing of composite components, including high-precision numerical control winding, automatic placement, preform forming, additive manufacturing, and high-performance carbon fiber production, are summarized. After specifying the key problems limiting the development of composite manufacturing technologies, we propose the development goals by 2035. Accordingly, suggestions are proposed including establishing national innovation institutions, planning major science and technology projects, enhancing disciplines development and talent fostering, strengthening international communication and collaboration, and focusing on significant scientific innovation and technological breakthroughs, thus to provide high-quality scientific and technological support for national major projects and important model projects.

Keywords： composite     precision manufacturing     advanced equipment     structure-function integration    

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Numerical verification of geometry control theory of the construction for super-span cable-stayed bridge

Huang Can, Bu Yizhi, Zhang Qinghua

Strategic Study of CAE 2009, Volume 11, Issue 1,   Pages 87-91

Abstract: style="text-align: justify;">Take Sutong Bridge as the subject investigated, the correctness of the geometryTaking the impact of geometry non-linear during construction into account, the simulation results indicateGeometry control theory applied to control the super-span cable-stayed bridge construction, and satisfiedoutcome of construction control can be achieved based on geometry control theory.

Keywords： cable-stayed bridge     geometry control     geometrical nonlinear     numerical verification    

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Experimental study of the effects of structured surface geometry on water spray cooling performance in

Minghou LIU, Yaqing WANG, Dong LIU, Kan XU, Yiliang CHEN

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 75-82 doi: 10.1007/s11708-010-0014-0

Abstract: Experiments were conducted to study the effects of enhanced surfaces on heat transfer performance during water spray cooling in non-boiling regime. The surface enhancement is straight fin. The structures were machined on the top surface of heated copper blocks with a cross-sectional area of 10 mm×10 mm. The spray was performed using Unijet full cone nozzles with a volumetric flux of 0.044–0.053 m /(m ·s) and a nozzle height of 17 mm. It is found that the heat transfer is obviously enhanced for straight fin surfaces relative to the flat surface. However, the increment decreases as the fin height increases. For flat surface and enhanced surfaces with a fin height of 0.1 mm and 0.2 mm, as the coolant flux increases, the heat flux increases as well. However, for finned surface with a height of 0.4 mm, the heat flux is not sensitive to the coolant volumetric flux. Changed film thickness and the form of water/surface interaction due to an enhanced surface structure (different fin height) are the main reasons for changing of the local heat transfer coefficient.

Keywords： spray cooling     finned surface     heat transfer    

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The research on method of geometry-control during erection of the short-line bridge

Wang Min,Zhang Yongtao,Liu Jinghong,Liu Yi,Huang Yue

Strategic Study of CAE 2009, Volume 11, Issue 11,   Pages 79-81

Abstract:

Focus on error control during fabricating and suspended splicing of box girders with segmentation method. After the analysis of the error reasons, and the combination with practical engineering—Sutong B2, it discussed control method, computing method and sensitive analysis method of linear control of prefabricated pre-stressed continuous beam bridge assembly with short line method.

Keywords： geometry-control     error analysis     least square method     erection of the short-line method    

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Edge preparation methods for cutting tools: a review

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0766-y

Abstract: Edge preparation can remove cutting edge defects, such as burrs, chippings, and grinding marks, generated in the grinding process and improve the cutting performance and service life of tools. Various edge preparation methods have been proposed for different tool matrix materials, geometries, and application requirements. This study presents a scientific and systematic review of the development of tool edge preparation technology and provides ideas for its future development. First, typical edge characterization methods, which associate the microgeometric characteristics of the cutting edge with cutting performance, are briefly introduced. Then, edge preparation methods for cutting tools, in which materials at the cutting edge area are removed to decrease defects and obtain a suitable microgeometry of the cutting edge for machining, are discussed. New edge preparation methods are explored on the basis of existing processing technologies, and the principles, advantages, and limitations of these methods are systematically summarized and analyzed. Edge preparation methods are classified into two categories: mechanical processing methods and nontraditional processing methods. These methods are compared from the aspects of edge consistency, surface quality, efficiency, processing difficulty, machining cost, and general availability. In this manner, a more intuitive understanding of the characteristics can be gained. Finally, the future development direction of tool edge preparation technology is prospected.

Keywords： edge preparation method     preparation principle     cutting edge geometry     edge characterization     tool performance    

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Creation and integration mechanism of instrumentation flexible developing system

Xiaoli XU, Qiushuang LIU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2,   Pages 235-240 doi: 10.1007/s11465-011-0122-5

Abstract:

To solve many key technical problems during the development of modern instrumentation system integrationinstrumentation flexible developing system (IFDS), this paper discusses the creation and open flexible integrationmechanism of the modern instrumentation developing system and the research and optimization of the rapid integrationmodern instrument R&D system, to effectively utilize the rich integrated resource and achieve rapid integrationApplications show that the new IFDS can improve the integration level and efficiency of R&D of the

Keywords： modern instrumentation developing     flexible interconnection     flexible integration mechanism     rapid integration    

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Persistent Integration and Innovation Management Mode and Its Applications in Petroleum Production Engineering

He Liu

Frontiers of Engineering Management 2015, Volume 2, Issue 4,   Pages 339-343 doi: 10.15302/J-FEM-2015055

Abstract: This paper proposes a new management mode named the persistent integration and innovation management

Keywords： integration and innovation     engineering philosophy     petroleum production engineering     Daqing Oilfield    

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Optimization and simultaneous heat integration design of a coal-based ethylene glycol refining process

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1280-1288 doi: 10.1007/s11705-023-2301-4

Abstract: scenario triggers the navigation in this paper into the simultaneous optimization of parameters and heat integration

Keywords： ethylene glycol     redistribution     heat integration     optimization     parallel framework    

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ENTREPRENEURIAL OPPORTUNITY, VALUE EVOLUTION, AND ORGANIZATIONAL INTEGRATION OF PROFESSIONAL FARMER ENTREPRENEURSHIP

Frontiers of Agricultural Science and Engineering 2023, Volume 10, Issue 1,   Pages 135-148 doi: 10.15302/J-FASE-2022464

Abstract:

● The choice of a modern agriculture project was found to be rational for professional farmers to reduce interference from non-market factors. The success of this project is due to its capacity to successfully fill the structural hole in the market transaction network.

Keywords： Benefit-linked mechanism     featured agriculture     organizational integration     professional farmers     rural    

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Title Author Date Type Operation

Function-geometry integrated precision machining methodsand technologies for high performance workpieces

Guo Dongming

Journal Article

A study on Role and Function of Technology Integration Organizations in Engineering

Wang Liancheng

Journal Article

Russian school of the theory and geometry of gearing: Its origin and golden period (1935 --1975)

Dmitry BABICHEV,Sergey LAGUTIN,Natalya BARMINA

Journal Article

A new proof of Honeycomb Conjecture by fractal geometry methods

Tong ZHANG, Kai DING

Journal Article

Transmission probability method based on triangle meshes for solving the unstructured geometry neutron

WU Hongchun, LIU Pingping, ZHOU Yongqiang, CAO Liangzhi

Journal Article

Experimental studies of ash film fractions based on measurement of cenospheres geometry in pulverized

Siqi LIU, Yanqing NIU, Liping WEN, Yang LIANG, Bokang YAN, Denghui WANG, Shi’en HUI

Journal Article

Development Strategy for Precision Manufacturing of Composite Components Facing 2035

Shan Zhongde, SongWenzhe, Fan Congze,Wang Jun

Journal Article

Numerical verification of geometry control theory of the construction for super-span cable-stayed bridge

Huang Can, Bu Yizhi, Zhang Qinghua

Journal Article

Experimental study of the effects of structured surface geometry on water spray cooling performance in

Minghou LIU, Yaqing WANG, Dong LIU, Kan XU, Yiliang CHEN

Journal Article

The research on method of geometry-control during erection of the short-line bridge

Wang Min,Zhang Yongtao,Liu Jinghong,Liu Yi,Huang Yue

Journal Article

Edge preparation methods for cutting tools: a review

Journal Article

Creation and integration mechanism of instrumentation flexible developing system

Xiaoli XU, Qiushuang LIU

Journal Article

Persistent Integration and Innovation Management Mode and Its Applications in Petroleum Production Engineering

He Liu

Journal Article

Optimization and simultaneous heat integration design of a coal-based ethylene glycol refining process

Journal Article

ENTREPRENEURIAL OPPORTUNITY, VALUE EVOLUTION, AND ORGANIZATIONAL INTEGRATION OF PROFESSIONAL FARMER ENTREPRENEURSHIP

Journal Article