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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: The kinematic and mechanical performances of the designed parallel mechanism are analyzed to verify theirInspired by motion–energy coupling relationship of the knee, a wearable energy-damper clutched devicethat can provide energy in knee stance flexion to facilitate the leg off from the ground and can impedeIts co-operation with the springs in the prismatic pairs enables the prosthetic mechanism to have the energyand effectively decrease the peak power of actuators from 94.74 to 137.05 W while maintaining a good mechanical

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

Three-dimensional composite Li metal anode by simple mechanical modification for high-energy batteries

Frontiers in Energy 2023, Volume 17, Issue 5,   Pages 569-584 doi: 10.1007/s11708-023-0875-7

Abstract: Under this condition, a novel method to construct 3D composite anode via simple mechanical modificationIn this mini review, a systematic and in-depth investigation of this mechanical deformation techniqueFirst, by summarizing a number of recent studies, different mechanical modification approaches are classifiedThen, the effect of each individual mechanical modification approach and its working mechanisms is reviewed

Keywords: lithium (Li)-ion battery (LIB)     Li metal battery     three-dimensional (3D) composite Li metal anode     mechanical    

Influence of recycled polyethylene terephthalate fibres on plastic shrinkage and mechanical properties

Necat ÖZAŞIK; Özgür EREN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 6,   Pages 792-802 doi: 10.1007/s11709-022-0849-6

Abstract: The objective of this research is to evaluate the mechanical properties of recycled polyethylene terephthalatedetrimental effects up to 1% volume fraction, however further addition caused slight reductions on mechanical

Keywords: recycled PET     fibre-reinforced concrete     mechanical properties     plastic shrinkage     impact energy    

High performance solid-state thermoelectric energy conversion via inorganic metal halide perovskitesunder tailored 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: Solid-state thermoelectric energy conversion devices attract broad research interests because of theirinorganic metal halide perovskites CsPb(I1–xBrx)3 under mechanicalIt is demonstrated that halogen mixing and mechanical deformation are efficient methods to tailor electronicMechanical deformation can further push the orbital energies apart from each other in a more controllablethermoelectric device can reach as high as approximately 12% using mixed halide perovskites under tailored mechanical

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

Integrated energy storage system based on triboelectric nanogenerator in electronic devices

Xiao Feng, Yang Zhang, Le Kang, Licheng Wang, Chongxiong Duan, Kai Yin, Jinbo Pang, Kai Wang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 238-250 doi: 10.1007/s11705-020-1956-3

Abstract: TENG is a new type of energy collector, which has become a hot spot in the field of nanotechnology.It is widely used at the acquisition and conversion of mechanical energy to electric energy through theOn this basis, the TENG could be integrated with the energy storage system into a self-powered systemThe integration method of TENGs with energy storage systems and the related research status are then

Keywords: electronic devices     triboelectric nanogenerator     mechanical energy     self-powered system    

Research of mid and high frequency response of complex mechanical structures using energy finite element

Zhu Danhui,Xie Miaoxia,Kong Xiangjie,Zhang Wenbo,Chen Hualing

Strategic Study of CAE 2013, Volume 15, Issue 1,   Pages 106-112

Abstract: research group are presented, which focus on predict the dynamical response of actual complex mechanical

Keywords: mid and high frequency response     energy finite element method     prediction of vibro-acoustical response     mechanical structure     dynamics    

A bionic approach for the mechanical and electrical decoupling of an MEMS capacitive sensor in ultralow

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-023-0747-1

Abstract: However, attention has been rarely given on the influences of external mechanical and internal electricalIn this work, a bionic swallow structure design norm was developed for mechanical decoupling, and theinfluences of structural parameters on mechanical behavior were fully analyzed and optimized.High immunity to mechanical disturbances was maintained simultaneously, i.e., less than 0.369% and 0.058%

Keywords: micro-electro-mechanical system capacitive sensor     bionics     operation instability     mechanical and electrical    

Efficiency characteristics of piezostack pump for linear actuators

Junwu KAN, Kehong TANG, Chenghui SHAO, Guoren ZHU, Taijiang PENG,

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 4,   Pages 407-414 doi: 10.1007/s11465-009-0049-2

Abstract: A piezostack pump for linear actuators is presented and studied in terms of mechanical energy efficiency(MEE), energy conversion efficiency (ECE) and design method.MEE is defined as the ratio of the output mechanical energy to that converted from input electrical energy, and ECE is the ratio of output mechanical energy to input electrical energy.

Keywords: piezostack actuator     piezostack pump     mechanical efficiency     energy conversion efficiency (ECE)    

Determination of mechanical parameters for elements in meso-mechanical models of concrete

Xianglin GU, Junyu JIA, Zhuolin WANG, Li HONG, Feng LIN

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4,   Pages 391-401 doi: 10.1007/s11709-013-0225-7

Abstract: based on the discrete element method with the modified-rigid-body-spring concrete model, in which the mechanicalpredicted by the Carpinteri and Weibull size effects laws, a series of formulas to convert the macro-scale mechanical

Keywords: concrete     meso-mechanical model     discrete element method     size effect     mechanical parameter    

Facile synthesis of polyaniline nanorods to simultaneously enhance the mechanical properties and wear

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1254-1266 doi: 10.1007/s11705-023-2297-3

Abstract: To enhance the mechanical properties and wear resistance of epoxy resin, polyaniline nanorods were firstthe phase structures and compositions of polyaniline nanorods, and their positive influences on the mechanical

Keywords: epoxy resin     polyaniline nanorods     mechanical property     tribological performance     wear mechanism    

Mechanical properties and impact resistance of concrete composites with hybrid steel fibers

Fatih ÖZALP; Halit Dilşad YILMAZ; Burcu AKCAY

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 5,   Pages 615-623 doi: 10.1007/s11709-022-0828-y

Abstract: Mechanical properties of concrete were determined in experimental studies.In addition to the fracture energy and impact strength, two important indicators of ballistic performance

Keywords: projectile impact     depth of penetration     fracture energy     crater diameter     UHPFRC    

Thermo-mechanical simulation of frost heave in saturated soils

Frontiers of Structural and Civil Engineering   Pages 1400-1412 doi: 10.1007/s11709-023-0990-x

Abstract: The study of frost heave requires conducting a multiphysics analysis, considering the thermal, mechanicalThis paper presents the use of a coupled thermo-mechanical approach to simulate frost heave in saturatedA function predicting porosity evolution is implemented to couple the thermal and mechanical field analysesThe results of the simulations indicate that the thermo-mechanical model captures various processes involved

Keywords: frost heave     multiphysics analysis     thermo-mechanical approach     saturated soils    

Electronic and mechanical responses of two-dimensional HfS

Mohammad SALAVATI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 486-494 doi: 10.1007/s11709-018-0491-5

Abstract: We accordingly conducted first-principles calculations to explore the mechanical and electronic responses

Keywords: 2D materials     mechanical     electronic     DFT    

Experimental study on compaction-induced anisotropic mechanical property of rockfill material

Xiangtao ZHANG, Yizhao GAO, Yuan WANG, Yu-zhen YU, Xun SUN

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 109-123 doi: 10.1007/s11709-021-0693-0

Abstract: The anisotropy of rockfill materials has a significant influence on the performance of engineering structures. However, relevant research data are very limited, because of the difficulty with preparing specimens with different inclination angles using traditional methods. Furthermore, the anisotropy test of rockfill materials is complex and complicated, especially for triaxial tests, in which the major principal stress plane intersects with the compaction plane at different angles. In this study, the geometric characteristics of a typical particle fraction consisting of a specific rockfill material were statistically investigated, and the distribution characteristics of particle orientation in specimens prepared via different compaction methods were examined. For high-density rockfill materials, a set of specimen preparation devices for inclined compaction planes was developed, and a series of conventional triaxial compression tests with different principal stress direction angles were conducted. The results reveal that the principal stress direction angle has a significant effect on the modulus, shear strength, and dilatancy of the compacted rockfill materials. Analysis of the relationship between the principal stress direction angles, change in the stress state, and change in the corresponding dominant shear plane shows that the angle between the compacted surface and dominant shear plane is closely related to interlocking resistance associated with the particle orientation. In addition, different principal stress direction angles can change the extent of the particle interlocking effect, causing the specimen to exhibit different degrees of anisotropy.

Keywords: rockfill     inclination of specimen preparation     anisotropy     mechanical property     mechanism    

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 conducting

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

Title Author Date Type Operation

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

Journal Article

Three-dimensional composite Li metal anode by simple mechanical modification for high-energy batteries

Journal Article

Influence of recycled polyethylene terephthalate fibres on plastic shrinkage and mechanical properties

Necat ÖZAŞIK; Özgür EREN

Journal Article

High performance solid-state thermoelectric energy conversion via inorganic metal halide perovskitesunder tailored mechanical deformation

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

Journal Article

Integrated energy storage system based on triboelectric nanogenerator in electronic devices

Xiao Feng, Yang Zhang, Le Kang, Licheng Wang, Chongxiong Duan, Kai Yin, Jinbo Pang, Kai Wang

Journal Article

Research of mid and high frequency response of complex mechanical structures using energy finite element

Zhu Danhui,Xie Miaoxia,Kong Xiangjie,Zhang Wenbo,Chen Hualing

Journal Article

A bionic approach for the mechanical and electrical decoupling of an MEMS capacitive sensor in ultralow

Journal Article

Efficiency characteristics of piezostack pump for linear actuators

Junwu KAN, Kehong TANG, Chenghui SHAO, Guoren ZHU, Taijiang PENG,

Journal Article

Determination of mechanical parameters for elements in meso-mechanical models of concrete

Xianglin GU, Junyu JIA, Zhuolin WANG, Li HONG, Feng LIN

Journal Article

Facile synthesis of polyaniline nanorods to simultaneously enhance the mechanical properties and wear

Journal Article

Mechanical properties and impact resistance of concrete composites with hybrid steel fibers

Fatih ÖZALP; Halit Dilşad YILMAZ; Burcu AKCAY

Journal Article

Thermo-mechanical simulation of frost heave in saturated soils

Journal Article

Electronic and mechanical responses of two-dimensional HfS

Mohammad SALAVATI

Journal Article

Experimental study on compaction-induced anisotropic mechanical property of rockfill material

Xiangtao ZHANG, Yizhao GAO, Yuan WANG, Yu-zhen YU, Xun SUN

Journal Article

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

Francesco PENTA,Cesare ROSSI,Sergio SAVINO

Journal Article