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Analysis of suitable geometrical parameters for designing a tendon-driven under-actuated mechanical finger

Francesco PENTA,Cesare ROSSI,Sergio SAVINO

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 2,   Pages 184-194 doi: 10.1007/s11465-016-0385-y

Abstract:

This study aims to optimize the geometrical parameters of an under-actuated mechanical finger by conductingThe finger is actuated by a flexion tendon and an extension tendon.

Keywords： tendon-driven fingers     mechanical finger design     under-actuated mechanical systems    

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Push recovery for the standing under-actuated bipedal robot using the hip strategy

Chao LI,Rong XIONG,Qiu-guo ZHU,Jun WU,Ya-liang WANG,Yi-ming HUANG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 7,   Pages 579-593 doi: 10.1631/FITEE.14a0230

Abstract: particularly focuses on the hip strategy when an external disturbance is applied on the body of a standing under-actuated

Keywords： Push recovery     Balance control     Bipedal robot     Hip strategy    

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Development of a redundant anthropomorphic hydraulically actuated manipulator with a roll–pitch–yaw spherical

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 698-710 doi: 10.1007/s11465-021-0646-2

Abstract: This study proposes a seven-degree-of-freedom (7-DOF) redundant anthropomorphic hydraulically actuated

Keywords： hydraulic manipulator     inverse kinematic     redundant design     spherical wrist    

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Multiscale mechanical modeling of hydrated cement paste under tensile load using the combined DEM-MD

Yue HOU, Linbing WANG

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 3,   Pages 270-278 doi: 10.1007/s11709-017-0408-8

Abstract: combined DEM-MD method is proposed to simulate the crack failure process of Hydrated Cement Paste (HCP) underA three-dimensional (3D) multiscale mechanical model is established using the combined Discrete Element

Keywords： hydrated cement paste     multiscale     MD simulation     DEM    

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Micro-spectrophotometer based on micro electro-mechanical systems technology

ZHOU Lianqun, LI Zhenggang, WU Yihui, ZHANG Ping, XUAN Ming, JIA Hongguang

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 37-43 doi: 10.1007/s11465-008-0001-x

Abstract: developed by adopting micro-silicon-slit and micro-silicon-fixer, which are based on micro electro-mechanicalsystems (MEMS) technology.

Keywords： mini-spectrophotometer     referenced     micro-silicon-fixer     electro-mechanical     correlation coefficient    

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Effect of land-use management systems on coupled physical and mechanical, chemical and biological soil

Rainer HORN, Winfried E. H. BLUM

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 3,   Pages 243-245 doi: 10.15302/J-FASE-2020334

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Research on the influence of contact surface constraint on mechanical properties of rock-concrete compositespecimens under compressive loads

Baoyun ZHAO, Yang LIU, Dongyan LIU, Wei HUANG, Xiaoping WANG, Guibao YU, Shu LIU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2,   Pages 322-330 doi: 10.1007/s11709-019-0594-7

Abstract: To study the influence of contact surface on the mechanical properties of rock-concrete composite specimensunder compressive loads, the two different contact forms of rock-concrete composite specimens are designed, the mechanical properties of these two different specimens are analyzed under triaxial compressiveThe influence of contact surface constraint on the mechanical properties of rock-concrete composite specimensthe contact surface constraint of rock-concrete composite specimens, which explains the difference of mechanical

Keywords： rock-concrete     composite specimen     contact surface     mechanical properties     failure mechanism    

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Preload characteristics identification of the piezoelectric-actuated 1-DOF compliant nanopositioning

Ruizhou WANG, Xianmin ZHANG

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 20-36 doi: 10.1007/s11465-015-0328-z

Abstract:

Packaged piezoelectric ceramic actuators (PPCAs) and compliant mechanisms are attractive for nanopositioning and nanomanipulation due to their ultra-high precision. The way to create and keep a proper and steady connection between both ends of the PPCA and the compliant mechanism is an essential step to achieve such a high accuracy. The connection status affects the initial position of the terminal moving plate, the positioning accuracy and the dynamic performance of the nanopositioning platform, especially during a long-time or high-frequency positioning procedure. This paper presents a novel external preload mechanism and tests it in a 1-degree of freedom (1-DOF) compliant nanopositioning platform. The 1-DOF platform utilizes a parallelogram guiding mechanism and a parallelogram load mechanism to provide a more accurate actual input displacement and output displacement. The simulation results verify the proposed stiffness model and dynamic model of the platform. The values of the preload displacement, actual input displacement and output displacement can be measured by three capacitive sensors during the whole positioning procedure. The test results show the preload characteristics vary with different types or control modes of the PPCA. Some fitting formulas are derived to describe the preload displacement, actual input displacement and output displacement using the nominal elongation signal of the PPCA. With the identification of the preload characteristics, the actual and comprehensive output characteristics of the PPCA can be obtained by the strain gauge sensor (SGS) embedded in the PPCA.

Keywords： nanopositioning     preload characteristic     packaged piezoelectric ceramic actuator     compliant mechanism    

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Hydrologic experiments and modeling of two laboratory bioretention systems under different boundary conditions

Ruifen Liu, Elizabeth Fassman-Beck

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 4, doi: 10.1007/s11783-017-0951-5

Abstract: Hydrologic performance of bioretention systems is significantly influenced by the media composition andThis research measured hydrologic performance of column-scale bioretention systems during a synthetic

Keywords： Bioretention     Hydrologic process     Underdrain configuration     SWMM     Modeling    

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High performance solid-state thermoelectric energy conversion via inorganic metal halide perovskites undertailored mechanical deformation

Lifu YAN, Lingling ZHAO, Guiting YANG, Shichao LIU, Yang LIU, Shangchao LIN

Frontiers in Energy 2022, Volume 16, Issue 4,   Pages 581-594 doi: 10.1007/s11708-022-0831-y

Abstract: material, inorganic metal halide perovskites CsPb(I1–xBrx)3 undermechanical deformation is systematically investigated using the first-principle calculations and theMechanical deformation can further push the orbital energies apart from each other in a more controllableof the thermoelectric device can reach as high as approximately 12% using mixed halide perovskites undertailored mechanical deformation when the heat-source is at 500 K and the cold side is maintained at

Keywords： inorganic metal halide perovskites     mechanical deformation     thermoelectrics     first-principle calculations    

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Research on the dynamic mechanical characteristics and turning tool life under the conditions of excessively

Genghuang HE, Xianli LIU, Fugang YAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3,   Pages 329-334 doi: 10.1007/s11465-012-0303-x

Abstract:

The dynamic mechanical characteristics of excessively heavy-duty cutting were analyzed based on theBy investigating the influence of dynamic mechanical characteristics on the tools’ failure in limitedThrough a comprehensive analysis of the theory, the critical condition of the tools’ fracture under

Keywords： extreme loading cutting     shear flow stress     dynamic cutting force     fatigue fracture    

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A time−space porosity computational model for concrete under sulfate attack

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0985-7

Abstract: The deterioration of the microscopic pore structure of concrete under external sulfate attack (ESA) iseffort has been invested in exploring the temporal and spatial development of the porosity of concrete underThis study proposes a mechanical–chemical model to simulate the spatiotemporal distribution of the porosityof cement paste, corrosion damage, and continuous hydration of cement significantly affect concrete underconcrete covers and provide a credible approach for determining the residual life of concrete structures under

Keywords： expansion deformation     porosity     internal expansion stress     external sulfate attack     mechanical–chemical    

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Effect of mineral additives and permeability reducing admixtures having different action mechanisms on mechanicaland durability performance of cementitious systems

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1277-1291 doi: 10.1007/s11709-021-1752-2

Abstract: reducing admixture (PRA) having different action mechanisms on hardened state properties of cementitious systemsMortar mixes with binary and ternary cementitious systems were prepared by partially replacing cement

Keywords： cementitious system     mineral additive     permeability reducing admixture     mechanical properties     durability    

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Stiction and Friction in Micro Electro Mechanical Systems

Wang Weiyuan

Strategic Study of CAE 2000, Volume 2, Issue 3,   Pages 36-41

Abstract: Coating of anti-stiction films on the surface of Si microstructures and packaging of devices under dry

Keywords： micro electro mechanical systems     stiction     friction     anti-stiction films     wear-resisting films    

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Optimal locations of monitoring stations in water distribution systems under multiple demand patterns

Shuming LIU, Wenjun LIU, Jinduan CHEN, Qi WANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 204-212 doi: 10.1007/s11783-011-0364-9

Abstract: A flaw of demand coverage method in solving optimal monitoring stations problem under multiple demanddemand coverage of each set of monitoring stations is calculated by accumulating their demand coverage undermonitoring stations obtained using the DCI method can represent the water quality of water distribution systemsunder multiple demand patterns better than the one obtained using previous methods.

Keywords： demand coverage     monitoring     optimization     water distribution network     water quality    

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Title Author Date Type Operation

Analysis of suitable geometrical parameters for designing a tendon-driven under-actuated mechanical finger

Francesco PENTA,Cesare ROSSI,Sergio SAVINO

Journal Article

Push recovery for the standing under-actuated bipedal robot using the hip strategy

Chao LI,Rong XIONG,Qiu-guo ZHU,Jun WU,Ya-liang WANG,Yi-ming HUANG

Journal Article

Development of a redundant anthropomorphic hydraulically actuated manipulator with a roll–pitch–yaw spherical

Journal Article

Multiscale mechanical modeling of hydrated cement paste under tensile load using the combined DEM-MD

Yue HOU, Linbing WANG

Journal Article

Micro-spectrophotometer based on micro electro-mechanical systems technology

ZHOU Lianqun, LI Zhenggang, WU Yihui, ZHANG Ping, XUAN Ming, JIA Hongguang

Journal Article

Effect of land-use management systems on coupled physical and mechanical, chemical and biological soil

Rainer HORN, Winfried E. H. BLUM

Journal Article

Research on the influence of contact surface constraint on mechanical properties of rock-concrete compositespecimens under compressive loads

Baoyun ZHAO, Yang LIU, Dongyan LIU, Wei HUANG, Xiaoping WANG, Guibao YU, Shu LIU

Journal Article

Preload characteristics identification of the piezoelectric-actuated 1-DOF compliant nanopositioning

Ruizhou WANG, Xianmin ZHANG

Journal Article

Hydrologic experiments and modeling of two laboratory bioretention systems under different boundary conditions

Ruifen Liu, Elizabeth Fassman-Beck

Journal Article

High performance solid-state thermoelectric energy conversion via inorganic metal halide perovskites undertailored mechanical deformation

Lifu YAN, Lingling ZHAO, Guiting YANG, Shichao LIU, Yang LIU, Shangchao LIN

Journal Article

Research on the dynamic mechanical characteristics and turning tool life under the conditions of excessively

Genghuang HE, Xianli LIU, Fugang YAN

Journal Article

A time−space porosity computational model for concrete under sulfate attack

Journal Article

Effect of mineral additives and permeability reducing admixtures having different action mechanisms on mechanicaland durability performance of cementitious systems

Journal Article

Stiction and Friction in Micro Electro Mechanical Systems

Wang Weiyuan

Journal Article

Optimal locations of monitoring stations in water distribution systems under multiple demand patterns

Shuming LIU, Wenjun LIU, Jinduan CHEN, Qi WANG

Journal Article