Resource Type

Journal Article 570

Year

2024 1

2023 52

2022 49

2021 43

2020 33

2019 28

2018 27

2017 24

2016 25

2015 27

2014 19

2013 18

2012 21

2011 24

2010 24

2009 33

2008 13

2007 23

2006 14

2005 8

open ︾

Keywords

structure 12

stiffness 7

Community structure 4

Microbial community structure 4

frequency 4

steel structure 4

aircraft structure 3

durability 3

fatigue life 3

synthesis 3

ANSYS 2

Additive manufacturing 2

Crystal structure 2

High-throughput sequencing 2

Microstructure 2

Porous structure 2

Universal logic gate 2

additive manufacturing 2

bending stiffness 2

open ︾

Search scope:

排序： Display mode:

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 711-725 doi: 10.1007/s11465-021-0647-1

Abstract: Thus, this paper aims to design a novel variable stiffness actuator (VSA) that can provide safer physicalVSA follows the idea of modular design, mainly including a variable stiffness module and a drive moduleThe variable stiffness module transmits the motion from the drive module in a roundabout manner, makingAs the key component of the variable stiffness module, a stiffness adjustment mechanism with a symmetrical, which can eliminate the additional bending moment caused by the asymmetric structure.

Keywords： variable stiffness actuator     variable stiffness module     drive module     symmetrical structure     double-deck    

HTML PDF Collect

Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0691-5

Abstract: This study traces the development of dexterous hand research and proposes a novel antagonistic variablefinger mechanism not only achieves passive compliance against physical impacts, but also implements the variableIt achieves finger stiffness adjustability according to the biologically inspired stiffness variationprinciple of discarding some mobilities to adjust stiffness.finger stiffness presets are provided to verify the validity of the model.

Keywords： multifingered hand     mechanism design     robot safety     variable stiffness actuator    

HTML PDF Collect

Variable stiffness and damping magnetorheological isolator

Yang ZHOU, Xingyu WANG, Xianzhou ZHANG, Weihua LI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 310-315 doi: 10.1007/s11465-009-0039-4

Abstract: This paper presents the development and characterization of a magnetorheological (MR) fluid-based variablestiffness and damping isolator.Experimental results indicate that both the stiffness and damping capability of the developed MR isolator

Keywords： magnetorheological (MR) fluid     stiffness     damping     mathematical model     dynamic performance     parameter identification    

HTML PDF Collect

Design and experimental study of a passive power-source-free stiffness-self-adjustable mechanism

Yuwang LIU, Dongqi WANG, Shangkui YANG, Jinguo LIU, Guangbo HAO

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 32-45 doi: 10.1007/s11465-020-0604-4

Abstract: Passive variable stiffness joints have unique advantages over active variable stiffness joints and areExisting passive variable stiffness joints rely mainly on sensors and special control algorithms, resultingself-adaptive adjustment of stiffness in a purely mechanical manner.The variable stiffness mechanism can automatically adjust joint stiffness in accordance with the magnitudeThe variable stiffness principle is explained, and the design of the variable stiffness mechanism is

Keywords： variable stiffness mechanism     stiffness self-regulation     bionic robot     modeling    

HTML PDF Collect

Initial stiffness and moment resistance of reinforced joint with end-plate connection

Sufang WANG, Yiyi CHEN,

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 4,   Pages 345-351 doi: 10.1007/s11709-009-0054-x

Abstract: The joint is divided into some basic components, and the initial stiffness of each component is obtainedEspecially, the initial stiffness of reinforced components is drawn by theoretical model and finite elementThe initial stiffness of reinforced joint can be obtained by assembling the initial stiffness of eachthe results of finite element calculation, it is verified that the method to calculate the initial stiffness

Keywords： steel structure     end-plate connection     backing plate     supplementary web plate     initial stiffness     moment resistance    

HTML PDF Collect

Study of the Variable Load While Estimating Existing Bridge Structure

Suo Qinghui,Qian Yongjiu,Zhang Fang

Strategic Study of CAE 2004, Volume 6, Issue 5,   Pages 52-55

Abstract:

On the basis of design load in force, the revised factors of variable load used in estimating existingThe theory of time-dependent ability is adopted to evaluate the residual service life of structure anda method is adopted to revise the variable load.

Keywords： bridge structure     variable load     equal exceeding probability     time-dependent ability     re-service life    

HTML PDF Collect

Knowledge-Based Variable Structure Decoupling Control of a Nonlinear Multivariable System

Tu Chengyuan,Zeng Yanjun

Strategic Study of CAE 2001, Volume 3, Issue 10,   Pages 48-52

Abstract:

A knowledge-based variable-structure decoupling is developed, and be utilized to control a nonlinear

Keywords： nonlinear multivariable system     decoupling control     knowledge based variable structure decoupling    

HTML PDF Collect

Evaluation of measurement uncertainty of the high-speed variable-slit system based on the Monte Carlo

Yin ZHANG, Jianwei WU, Kunpeng XING, Zhongpu WEN, Jiubin TAN

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 517-537 doi: 10.1007/s11465-020-0589-z

Abstract: presents a dynamic and static error transfer model and uncertainty evaluation method for a high-speed variable-slitsystem based on a two-dimensional orthogonal double-layer air-floating guide rail structure.First, an error transfer model of the high-speed variable-slit system is established, and the influence

Keywords： air-floating guide rail     error transfer model     driving and following structure     dynamic error     uncertainty    

HTML PDF Collect

Nonlinear analysis of cable structures using the dynamic relaxation method

Mohammad REZAIEE-PAJAND, Mohammad MOHAMMADI-KHATAMI

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 253-274 doi: 10.1007/s11709-020-0639-y

Abstract: To utilize this scheme, investigators have suggested various stiffness matrices for a cable element.

Keywords： nonlinear analysis     cable structure     stiffness matrix     dynamic relaxation method    

HTML PDF Collect

Improving existing “reaching law” for better discrete control of seismically-excited building structures

Zhijun LI, Zichen DENG

Frontiers of Structural and Civil Engineering 2009, Volume 3, Issue 2,   Pages 111-116 doi: 10.1007/s11709-009-0022-5

Abstract: in details: 1) the equation of discrete motion for a control system; 2) the design of discrete-time variablestructure control.In addition, the model of a three-storey shear-type building structure was used to verify the effectivenessof the discrete variable structure control method.show that the control law can effectively reduce the peak value of seismic response of the building structure

Keywords： discrete-time variable structure control     composite reaching law     chattering effect     saturated control law    

HTML PDF Collect

Comparison of indices for stiffness performance evaluation

Giuseppe CARBONE, Marco CECCARELLI,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 3,   Pages 270-278 doi: 10.1007/s11465-010-0023-z

Abstract: This paper addresses the problem of a numerical evaluation of the stiffness performance for multibodyStiffness indices are computed and compared for a case study.Results are used for comparing the effectiveness of the stiffness indices.

Keywords： robotics     stiffness     performance indices    

HTML PDF Collect

New nonlinear stiffness actuator with predefined torque‒deflection profile

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0721-3

Abstract: A nonlinear stiffness actuator (NSA) could achieve high torque/force resolution in low stiffness rangeand high bandwidth in high stiffness range, both of which are beneficial for physical interaction betweenThe new NSA has a compact structure, and it is lightweight, both of which are also beneficial for itsThe optimal parameters of the structure were given by analyzing the weight of the NSA and the mechanic

Keywords： compliant actuator     nonlinear stiffness actuator     nonlinear spring     predefined torque−deflection profile    

HTML PDF Collect

Mechanical performance analysis and stiffness test of a new type of suspension bridge

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1160-1180 doi: 10.1007/s11709-021-0760-6

Abstract: A new type of suspension bridge is proposed based on the gravity stiffness principle.The rigid webs connect the main cable and main girder to form a truss that can improve the bending stiffnessThe cross braces connect the main cables to form a closed space truss structure that can improve thetorsional stiffness of the bridge.A stiffness test was carried out on the new type of suspension bridge with a small span, and the results

Keywords： new type of suspension bridge     stiffness test     mechanical performance     railway bridge     space truss    

HTML PDF Collect

Investigating the influence of delamination on the stiffness of composite pipes under compressive transverse

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1316-1323 doi: 10.1007/s11709-019-0555-1

Abstract: The effect of delamination on the stiffness reduction of composite pipes is studied in this research.The stiffness test of filament wound composite pipes is simulated using cohesive zone method.geometrical parameters including delamination size and its position with respect to loading direction on stiffnessAt first, finite element results for stiffness test of a perfect pipe without delamination are validateddirections and also its orientation with respect to loading direction on delamination propagation and stiffness

Keywords： delamination     composite pipes     stiffness test     cohesive zone method    

HTML PDF Collect

A numerical framework for underground structures in layered ground under inclined P-SV waves using stiffness

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 1,   Pages 10-24 doi: 10.1007/s11709-022-0904-3

Abstract: The free-field responses are first obtained using the stiffness matrix method based on plane-wave assumptionsdomain reduction method was employed to reproduce the wavefield in the numerical model of the soil–structureground, layered ground, and pressure-dependent heterogeneous ground, as well as for an example of a soil–structure

Keywords： underground structures     seismic response     stiffness matrix method     domain reduction method     P-SV waves    

HTML PDF Collect

Title Author Date Type Operation

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Journal Article

Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous

Journal Article

Variable stiffness and damping magnetorheological isolator

Yang ZHOU, Xingyu WANG, Xianzhou ZHANG, Weihua LI

Journal Article

Design and experimental study of a passive power-source-free stiffness-self-adjustable mechanism

Yuwang LIU, Dongqi WANG, Shangkui YANG, Jinguo LIU, Guangbo HAO

Journal Article

Initial stiffness and moment resistance of reinforced joint with end-plate connection

Sufang WANG, Yiyi CHEN,

Journal Article

Study of the Variable Load While Estimating Existing Bridge Structure

Suo Qinghui,Qian Yongjiu,Zhang Fang

Journal Article

Knowledge-Based Variable Structure Decoupling Control of a Nonlinear Multivariable System

Tu Chengyuan,Zeng Yanjun

Journal Article

Evaluation of measurement uncertainty of the high-speed variable-slit system based on the Monte Carlo

Yin ZHANG, Jianwei WU, Kunpeng XING, Zhongpu WEN, Jiubin TAN

Journal Article

Nonlinear analysis of cable structures using the dynamic relaxation method

Mohammad REZAIEE-PAJAND, Mohammad MOHAMMADI-KHATAMI

Journal Article

Improving existing “reaching law” for better discrete control of seismically-excited building structures

Zhijun LI, Zichen DENG

Journal Article

Comparison of indices for stiffness performance evaluation

Giuseppe CARBONE, Marco CECCARELLI,

Journal Article

New nonlinear stiffness actuator with predefined torque‒deflection profile

Journal Article

Mechanical performance analysis and stiffness test of a new type of suspension bridge

Journal Article

Investigating the influence of delamination on the stiffness of composite pipes under compressive transverse

Sattar MALEKI, Roham RAFIEE, Abolfazl HASANNIA, Mohammad Reza HABIBAGAHI

Journal Article

A numerical framework for underground structures in layered ground under inclined P-SV waves using stiffness

Journal Article