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Modelling and experimental verification on concrete-filled steel tubular columns with L or T section

LU Xilin, LI Xueping, WANG Dan

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2, Pages 163-169 doi: 10.1007/s11709-007-0017-z

Abstract: According to the confining mechanism, the stress-strain constitutive model was put forward, and calculated

Keywords： hysteretic confining mechanism Concrete-filled in-filled composite

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Confining pressure effect on dynamic response of high rockfill dam

Xuexing CAO, Yunlong HE, Kun XIONG,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 1, Pages 116-126 doi: 10.1007/s11709-010-0014-5

Abstract: Studies show that the dynamic properties of rockfill are strongly dependent on the confining pressureTherefore, confining pressure effect has become a very important factor in the seismic analysis of highThen a new model that could consider confining pressure effect has been established.The results show that, the new model can fit the test data well under various confining pressures.Hardin-Drnevich model, it can be seen that the result is conservative to some extent without considering confining

Keywords： confining pressure effect high rockfill dam dynamic response Hardin-Drnevich constitutive model

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Behavior of Concrete Under the Triaxial Compression

Yan Dongming,Lin Gao

Strategic Study of CAE 2007, Volume 9, Issue 6, Pages 64-70

Abstract: Specimens subjected to equal constant confining pressures of 0, 4 MPa, 8 MPa, 12 MPa and 16 MPa In addition, strength properties of concrete under unequal confining pressures were also investigatedtest results it was revealed that the ultimate strength increases dramatically with the increasing confining The complete stress- strain curves were obtained at different confining pressures.

Keywords： triaxial stress state confining pressure ultimate strength deformation concrete

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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 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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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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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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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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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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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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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