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Human hip joint center analysis for biomechanical design of a hip joint exoskeleton Article

Wei YANG,Can-jun YANG,Ting XU

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 8,   Pages 792-802 doi: 10.1631/FITEE.1500286

Abstract: We propose a new method for the customized design of hip exoskeletons based on the optimization of theThe motions of the hip joint center with variation of the flexion angle were measured and the resultingAn exoskeleton mechanism capable to follow the hip center’s movement was designed to cover the full motionThe humanexoskeleton model was analyzed to further validate the decrease of the hip joint internal forceduring hip joint flexion or abduction by applying the resulting design.

Keywords： Hip joint exoskeleton     Hip joint center     Compatible joint     Human-machine interaction force    

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Design and modeling of continuum robot based on virtual-center of motion mechanism

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0739-6

Abstract: The flexural virtual-center of motion (VCM) mechanism can be machined integrally, and this way eliminatesThus, it is well suited for use as a continuum robot joint.Second, the VCM mechanism is combined to form a flexural joint suitable for the continuum robot.

Keywords： VCM mechanism     continuum robot     flexural joint     pseudo-rigid body model     cable-driven    

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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: This paper presents a control algorithm for push recovery, which particularly focuses on the hip strategyfound that horizontal stability can be maintained with a suitably controlled torque applied at the hipis applied on the center of mass (CoM) and (2) external torque is acting around the CoM, and a universalhip strategy is derived for most disturbances.Moreover, three torque primitives for the hip, depending on the type of disturbance, are designed to

Keywords： Push recovery     Balance control     Bipedal robot     Hip strategy    

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Analytical algorithms of compressive bending capacity of bolted circumferential joint in metro shield

Frontiers of Structural and Civil Engineering   Pages 901-914 doi: 10.1007/s11709-023-0915-8

Abstract: This study focuses on the mechanical characteristics and mechanism of a bolted circumferential jointanalytical algorithms for four stress stages are established to describe the bearing behaviors of the jointstudy is performed to verify the rationality of the simplified theoretical analysis for the segment jointinvestigation is conducted to discuss the factors affecting the ultimate compressive bending capacity of the jointThe method for optimizing the joint flexural stiffness is clarified.

Keywords： shield tunnel     segment joint     joint structural model     failure mechanism    

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Dual-reaction-center catalytic process continues Fenton’s story

Chao Lu, Kanglan Deng, Chun Hu, Lai Lyu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1261-x

Abstract: Abstract • Dual-reaction-center (DRC) system breaks through bottleneck of Fenton reaction. • Utilizationfocusing on studying a novel heterogeneous Fenton catalytic process, and we developed the dual-reaction-center

Keywords： Dual reaction centers     Fenton     Pollutant utilization     Electron transfer    

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3D Printing Hip Prostheses Offer Accurate Reconstruction, Stable Fixation, and Functional Recovery forRevision Total Hip Arthroplasty with Complex Acetabular Bone Defect Article

Yongqiang Hao, Lei Wang, Wenbo Jiang, Wen Wu, Songtao Ai, Lu Shen, Shuang Zhao, Kerong Dai

Engineering 2020, Volume 6, Issue 11,   Pages 1285-1290 doi: 10.1016/j.eng.2020.04.013

Abstract: and large acetabular bone defects present the main challenges and difficulty in the revision of total hipMoreover, a Harris hip score was obtained to evaluate limb function.The Harris hip score indicated a very good functional recovery in all three patients.

Keywords： 3D printing     Hip revision     Complex and large acetabular bone defect     Accurate reconstruction    

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Air bearing center cross gap of neutron stress spectrometer sample table support system

Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 4,   Pages 403-411 doi: 10.1007/s11465-016-0405-y

Abstract: To study the performance of air bearing center cross gap, finite element models (FEMs) were establishedair supply pressure, and gap parameters on the overturning moment and bearing capacity of air bearing center

Keywords： neutron stress spectrometer     sample table     support system     air bearing     center cross gap     simulation     experiment    

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Finite element analysis on the seismic behavior of side joint of Prefabricated Cage System in prefabricated

Yunlin LIU, Shitao ZHU

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1095-1104 doi: 10.1007/s11709-019-0538-2

Abstract: Side joint is the weak region of PCS concrete frame and has great influence on seismic behavior of theThus systematically study on the seismic behavior of PCS concrete side joint is necessary.This paper presents a finite element study on behavior of the side joint under seismic loading.

Keywords： PCS concrete side joint     numerical simulation     fiber-beam element joint model     solid element joint model    

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A Discussion and Study on the Center Shift Phenomena of a Building Fire-whirl

Chen Changkun,Yao Bin,Fan Weicheng

Strategic Study of CAE 2003, Volume 5, Issue 10,   Pages 63-68

Abstract: the behavior of building fire-whirl is studied, and an analytical method to describe and express the centersuch method, the large eddy simulation (LES) technology is employed for numerical simulation of the centerparameters such as average angular velocity, peak of temperature, location of the high-temperature center

Keywords： fire-whirl     center shift     large eddy simulation     building    

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determine tumor prognosis and molecular characteristics of clear-cell renal cell carcinoma: a multi-center

Frontiers of Medicine doi: 10.1007/s11684-023-1029-3

Abstract: determine tumor prognosis and molecular characteristics of clear-cell renal cell carcinoma: a multi-center

Keywords： tumor prognosis molecular     Microbiome subsets determine     center analysis microbiome     transcriptome data    

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Dynamic characteristics of a magnetorheological pin joint for civil structures

Yancheng LI,Jianchun LI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 1,   Pages 15-33 doi: 10.1007/s11465-014-0283-0

Abstract:

Magnetorheological (MR) pin joint is a novel device in which its joint moment resistance can be controlledThe smart pin joint is intended to be used as a controllable connector between the columns and beamsstructure, the main purpose of this paper is to test and characterise the hysteretic behaviour of MR pin jointA test scheme is designed to obtain the dynamic performance of MR pin joint in the dominant earthquake

Keywords： Magnetorheological pin joint     hyperbolic hysteresis model experimental testing frequency dependence    

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Atypical manifestations of acute coronary syndrome — throat discomfort: a multi-center observational

Frontiers of Medicine 2022, Volume 16, Issue 4,   Pages 651-658 doi: 10.1007/s11684-021-0859-0

Abstract: To present the clinical characteristics and the misdiagnosis rate of acute coronary syndrome manifested primarily as throat discomfort, we conducted a multicentric and retrospective study in the cardiology and otorhinolaryngology departments. Records of patients with primary complaint of throat discomfort, absence of chest pain at onset, and an ultimate diagnosis of acute coronary syndrome, as well as patients with pharyngitis (as controls) were collected from May 2015 to April 2016. The patients’ main manifestations were compared. Logistic regression results showed that chest tightness, dyspnea, perspiring, and exertional throat symptoms were significantly associated with acute coronary syndrome, with odds ratios of 8.3 (95% CI 2.2−31.5), 10.9 (95% CI 1.8−66.9), 25.4 (95% CI 3.6−179.9), and 81.2 (95% CI 13.0−506.7). A total of 25 (56.82%) out of 44 acute coronary syndrome patients, who were first admitted to the otorhinolaryngology department, were misdiagnosed, with a 12% (3/25) mortality rate. Throat discomfort can be the principal manifestation of acute coronary syndrome. Such patients exhibit high misdiagnosis and mortality rates. Exertional throat symptoms, chest tightness, perspiring, and dyspnea were important indicators of acute coronary syndrome in patients whose main complaint was throat discomfort. The awareness of this condition will result in prompt diagnosis and reduce morbidity and mortality.

Keywords： acute coronary syndrome (ACS)     throat discomfort (TD)     throat pain     cardiology departments     non-cardiologic physicians    

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Identification of dynamic stiffness matrix of bearing joint region

Feng HU, Bo WU, Youmin HU, Tielin SHI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 289-299 doi: 10.1007/s11465-009-0064-3

Abstract: The paper proposes an identification method of the dynamic stiffness matrix of a bearing joint regionThe dynamic stiffness matrix of the bearing joint region can be identified by measuring the matrix ofresults, and there is very high reliability in the identified dynamic stiffness matrix of the bearing joint

Keywords： frequency response function (FRFs)     dynamic stiffness     finite element     synthetic substructure method     joint    

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Joint slip investigation based on finite element modelling verified by experimental results on wind turbine

Saleh YAGHOOBI, Ahmad SHOOSHTARI

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 3,   Pages 341-351 doi: 10.1007/s11709-017-0393-y

Abstract:

Slippage corresponds to the relative displacement of a bolted joint subjected to shear loads sincethe construction clearance between the bolt shank and the bolthole at assembly can cause joint slip.Deflections of towers with joint slippage effects is up to 1.9 times greater than the displacements obtainedFinally, joint slip data for different types of angles, bolt diameter and bolt arrangements are generated

Keywords： Joint slip     cyclic loading     Finite element modelling     Experimental joint behavior     damping ratios (   

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General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0681-7

Abstract: solve all the inverse kinematics problems, and there is no common approach to solve arbitrary three-jointgeometric (NAG) methods that obtain the general closed-form inverse kinematics for all types of three-jointalgebraic constraints are used as the conditions precedent to solve the inverse kinematics of three-jointindicating that the inverse solutions are consistent with the given joint angles validate the generalThe simulation result shows the inverse solutions and six sets given joint angles are consistent.

Keywords： inverse kinematics     Paden–Kahan subproblems     three-joint subproblems     product of exponential     closed-form    

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Title Author Date Type Operation

Human hip joint center analysis for biomechanical design of a hip joint exoskeleton

Wei YANG,Can-jun YANG,Ting XU

Journal Article

Design and modeling of continuum robot based on virtual-center of motion mechanism

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

Analytical algorithms of compressive bending capacity of bolted circumferential joint in metro shield

Journal Article

Dual-reaction-center catalytic process continues Fenton’s story

Chao Lu, Kanglan Deng, Chun Hu, Lai Lyu

Journal Article

3D Printing Hip Prostheses Offer Accurate Reconstruction, Stable Fixation, and Functional Recovery forRevision Total Hip Arthroplasty with Complex Acetabular Bone Defect

Yongqiang Hao, Lei Wang, Wenbo Jiang, Wen Wu, Songtao Ai, Lu Shen, Shuang Zhao, Kerong Dai

Journal Article

Air bearing center cross gap of neutron stress spectrometer sample table support system

Yang LI,Yunxin WU,Hai GONG,Xiaolei FENG

Journal Article

Finite element analysis on the seismic behavior of side joint of Prefabricated Cage System in prefabricated

Yunlin LIU, Shitao ZHU

Journal Article

A Discussion and Study on the Center Shift Phenomena of a Building Fire-whirl

Chen Changkun,Yao Bin,Fan Weicheng

Journal Article

determine tumor prognosis and molecular characteristics of clear-cell renal cell carcinoma: a multi-center

Journal Article

Dynamic characteristics of a magnetorheological pin joint for civil structures

Yancheng LI,Jianchun LI

Journal Article

Atypical manifestations of acute coronary syndrome — throat discomfort: a multi-center observational

Journal Article

Identification of dynamic stiffness matrix of bearing joint region

Feng HU, Bo WU, Youmin HU, Tielin SHI

Journal Article

Joint slip investigation based on finite element modelling verified by experimental results on wind turbine

Saleh YAGHOOBI, Ahmad SHOOSHTARI

Journal Article

General closed-form inverse kinematics for arbitrary three-joint subproblems based on the product of

Journal Article