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Optimization of kinetic mechanism for hydrogen combustion based on machine learning

Frontiers of Chemical Science and Engineering 2024, Volume 18, Issue 11, doi: 10.1007/s11705-024-2487-0

Abstract: The reduced mechanism based on the minimized reaction network method can effectively solve the rigidityThe optimization of dynamic parameters of the reduced mechanism is the key to reproduce the experimentalCompared with the origin mechanism, the performance of the optimized mechanism was significantly improvedThe optimized mechanism was used to predict the ignition delay times, laminar flame speeds and speciesIn addition, the differences of the key reactions of the combustion mechanism under specific working

Keywords： hydrogen combustion     machine learning     chemical kinetics     mechanism optimization    

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Theory and method of mechanism system design

Huijun ZOU, Qinghua LIANG, Qing ZHANG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4,   Pages 399-411 doi: 10.1007/s11465-010-0116-8

Abstract: Conceptual design is the most critical and creative phase of design. Recently, increasing attention has been directed to supporting conceptual-level computer aided creative design and its theories and methodologies. Specifically, for conceptual design of mechanical products, this paper presents a novel function solving model for mechanical product design and highlights the importance of systematic synthesis to achieve creative design. Then it builds a framework as a function-effect-process-action- mechanisms (FEPAM) mapping process, which enables creative design on the basis of conceiving different action schemes. After that, several key points are elaborated including 1) representing and decomposition methods of functions and motion behaviors; 2) action scheme representing method based on network plan techniques; and 3) variation and creation methods based on action scheme transformations.

Keywords： mechanism system creative design     process model     function solving model     process action procedure     mechanismsknowledge base     principle of mechanism system composition    

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Formation mechanism and modeling of surface waviness in incremental sheet forming

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0679-1

Abstract: surface quality has always been a challenge for incremental sheet forming (ISF), whereas the generation mechanismIn this paper, the formation mechanism and the prediction of waviness are both investigated through experimentsengineering application, a theoretical model for waviness height is proposed based on the generation mechanismThis work is favorable for the perfection of formation mechanism and control of surface quality in ISF

Keywords： surface waviness     incremental sheet forming     numerical simulation     formation mechanism     deformation history    

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Autogenous healing mechanism of cement-based materials

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 6,   Pages 948-963 doi: 10.1007/s11709-023-0960-3

Abstract: However, systematic research on the autogenous healing mechanism of cement-based materials is lackingScanning electron microscopy and optical microscopy were used to examine the autogenous healing mechanism

Keywords： autogenous healing     cement-based materials     healing mechanism     aggregation effect    

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Design and analysis of the gripper mechanism based on generalized parallel mechanisms with configurable

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 765-781 doi: 10.1007/s11465-021-0655-1

Abstract: mechanisms with a configurable moving platform have become popular in the research field of parallel mechanismThis type of gripper mechanism can be applied to grasp large or heavy objects in different environmentsA sufficient rule based on Lie group theory is proposed to synthesize the mechanism.A kinematic analysis of the example mechanism is presented.The workspace shows that the mechanism possesses high rotational capability.

Keywords： generalized parallel mechanism     configurable moving platform     gripper mechanism     type synthesis     kinematic    

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Optimal design of a linkage–cam mechanism-based redundantly actuated parallel manipulator

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 451-467 doi: 10.1007/s11465-021-0634-6

Abstract: A redundantly actuated parallel manipulator (RAPM) with mixed translational and rotational degrees of freedom (DOFs) is challenged for its dimensionally homogeneous Jacobian modeling and optimal design of architecture. In this paper, a means to achieve redundant actuation by adding kinematic constraints is introduced, which reduces the DOFs of the end-effector (EE). A generic dimensionally homogeneous Jacobian is developed for this type of RAPMs, which maps the generalized velocities of three points on the EE to the joint velocities. A new optimization algorithm derived from this dimensionally homogeneous Jacobian is proposed for the optimal design of this type of RAPMs. As an example, this paper presents a spatial RAPM involving linkages and cam mechanisms. This RAPM has 4 DOFs and 6 translational actuations. The linkage lengths and the position of the universal joints of the RAPM are optimized based on the dimensionally homogeneous Jacobian.

Keywords： redundant actuation     parallel manipulator     linkage–cam mechanism     Jacobian     optimal design    

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Cryogenic minimum quantity lubrication machining: from mechanism to application

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 649-697 doi: 10.1007/s11465-021-0654-2

Abstract: Second, the cooling–lubrication mechanism of CMQL and its influence mechanism on material hardness, cuttingThe effects of CMQL are systematically analyzed based on its mechanism and application form.

Keywords： cryogenic minimum quantity lubrication (CMQL)     cryogenic medium     processing mode     device application     mechanism    

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Design of a novel side-mounted leg mechanism with high flexibility for a multi-mission quadruped earth

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0740-0

Abstract: At present, few methods for these robots’ leg design utilize a side-mounted spatial parallel mechanismThus, this paper presents a complete design process of a novel 5-degree-of-freedom (5-DOF) hybrid leg mechanismFirst, a general approach is proposed for constructing the novel leg mechanism.With regard to the synthesis method of the parallel mechanism, a family of concise hybrid leg mechanismsFurthermore, the virtual quadruped rover equipped with this innovative leg mechanism is built.

Keywords： design synthesis     parallel mechanism     hybrid leg mechanism     screw theory     quadruped robot    

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Review on mechanism and process of surface polishing using lasers

Arun KRISHNAN, Fengzhou FANG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 299-319 doi: 10.1007/s11465-019-0535-0

Abstract: This article gives a detailed overview of the laser polishing mechanism by explaining various process

Keywords： laser polishing     surface roughness     process parameters     mechanism    

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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: flexible developing system (IFDS), this paper discusses the creation and open flexible integration mechanismBased on the operation mechanism of the modern instrumentation developing system and the research and

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

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Mechanism and characterization of microplastic aging process: A review

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1700-6

Abstract:

● Methods for estimating the aging of environmental micro-plastics were highlighted.

Keywords： Microplastics     Aging     Degradation     Characterization     Mechanism    

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The linkage mechanism between urban intelligence and low carbon innovation

Ming LIN

Frontiers of Engineering Management 2019, Volume 6, Issue 4,   Pages 584-586 doi: 10.1007/s42524-019-0076-6

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Desulfurization mechanism of FCC gasoline: A review

Liang ZHAO, Yan CHEN, Jinsen GAO, Yu CHEN,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 3,   Pages 314-321 doi: 10.1007/s11705-009-0271-9

Abstract: This paper reviews the most important developments on the desulfurization mechanism of Fluid Catalyticdesulfurization approaches and technologies are briefly introduced, and then the researches on desulfurization mechanismFurther researches on the desulfurization mechanism will lay a foundation for optimizing desulfurization

Keywords： Catalytic Cracking     foundation     developed desulfurization     desulfurization mechanism     important    

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Design method and verification of a hybrid prosthetic mechanism with energy-damper clutchable device

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 747-764 doi: 10.1007/s11465-021-0644-4

Abstract: In this work, the configurations of transfemoral prosthetic mechanism are synthesized in terms of humanA hybrid transfemoral prosthetic (HTP) mechanism with multigait functions is proposed to recover thefeasibility in transfemoral prosthetic mechanism.Its co-operation with the springs in the prismatic pairs enables the prosthetic mechanism to have theResults demonstrate that the designed HTP mechanism can replace the motion functions of the knee and

Keywords： hybrid transfemoral prosthetic mechanism     energy recycling     wearable mechanical clutched device     mechanical    

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A Study of the Functional Mechanism of Petrochemical Engineering Construction Project Management

Ji-ming Wang

Frontiers of Engineering Management 2014, Volume 1, Issue 2,   Pages 129-139 doi: 10.15302/J-FEM-2014020

Abstract: This paper, proceeding from the project construction process, the management mode and the implementation way, makes an in-depth study of the environmental characteristics and the managerial elements of petrochemical engineering construction project, revealing the inherent laws, establishing a theoretical model, and proposing a theory of the mechanisms of construction project management; and presents profound revelations found for construction project management in petrochemical engineering in seven aspects, which can play a guiding role in improving the managerial performance of petrochemical construction project. The theory established proposes that: The construction project management in petrochemical engineering is a complex systematic process, formed of 5 phases and 55 sub-processes of management, and exposed to many factors of influence; the environmental characteristics and managerial elements exercise positive impacts on managerial performance, but different factors have different impacts and act in different ways on managerial performance; the managerial elements of petrochemical engineering construction project are tiered, transferable, systematic and quantifiable, and the role of managerial elements in the managerial performance can be systematically integrated, quantitatively explained and transferred in a multi-level way.

Keywords： petrochemical engineering     construction project     project management     functional mechanism    

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Title Author Date Type Operation

Optimization of kinetic mechanism for hydrogen combustion based on machine learning

Journal Article

Theory and method of mechanism system design

Huijun ZOU, Qinghua LIANG, Qing ZHANG

Journal Article

Formation mechanism and modeling of surface waviness in incremental sheet forming

Journal Article

Autogenous healing mechanism of cement-based materials

Journal Article

Design and analysis of the gripper mechanism based on generalized parallel mechanisms with configurable

Journal Article

Optimal design of a linkage–cam mechanism-based redundantly actuated parallel manipulator

Journal Article

Cryogenic minimum quantity lubrication machining: from mechanism to application

Journal Article

Design of a novel side-mounted leg mechanism with high flexibility for a multi-mission quadruped earth

Journal Article

Review on mechanism and process of surface polishing using lasers

Arun KRISHNAN, Fengzhou FANG

Journal Article

Creation and integration mechanism of instrumentation flexible developing system

Xiaoli XU, Qiushuang LIU

Journal Article

Mechanism and characterization of microplastic aging process: A review

Journal Article

The linkage mechanism between urban intelligence and low carbon innovation

Ming LIN

Journal Article

Desulfurization mechanism of FCC gasoline: A review

Liang ZHAO, Yan CHEN, Jinsen GAO, Yu CHEN,

Journal Article

Design method and verification of a hybrid prosthetic mechanism with energy-damper clutchable device

Journal Article

A Study of the Functional Mechanism of Petrochemical Engineering Construction Project Management

Ji-ming Wang

Journal Article