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Modeling limit force capacities of high force to volume lead extrusion dampers

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 3,   Pages 609-622 doi: 10.1007/s11709-021-0724-x

Abstract: This study developed upper- and lower-bound force capacity estimates from analytical mechanics basedThe upper-bound estimates from direct and indirect extrusion are denoted as (FUB,1,i>LB,1) and below the upper-bound estimates (FUB,1, FUB,2lower bound was 74% of the actual device force on average.The mean upper-bound gap was 33%.

Keywords： extrusion     lead dampers     upper and lower bound     analytical modelling     limit force    

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Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1480-1493 doi: 10.1007/s11709-021-0776-y

Abstract: The method comprises the following steps: i) determination of the total head, ii) upper bound solutionexpansions, and the expressions of the seismic active earth thrust and pressure are derived by using the upperbound theorem.

Keywords： seismic active earth pressure     partial seepage flow     pore pressure     anisotropy     upper bound theorem    

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Correction to: Effect of undercut on the lower bound stability of vertical rock escarpment using finite

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0035-5

Abstract: Correction to: Effect of undercut on the lower bound stability of vertical rock escarpment using finite

Keywords： finite element power     stability rock escarpment    

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Effect of undercut on the lower bound stability of vertical rock escarpment using finite element and

Shuvankar DAS; Debarghya CHAKRABORTY

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 8,   Pages 1040-1055 doi: 10.1007/s11709-022-0841-1

Abstract: Lower bound finite element limit analysis in association with Power Cone Programming (PCP) is applied

Keywords： undercut     vertical escarpment     stability     Hoek-Brown yield criterion     PCP    

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Bearing and uplift capacities of under-reamed piles in soft clay underlaid by stiff clay using lower-bound

Mantu MAJUMDER, Debarghya CHAKRABORTY

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 537-551 doi: 10.1007/s11709-021-0708-x

Abstract: effectiveness of under-reamed piles in soft clay underlaid by stiff clay is numerically studied using the lower-bound

Keywords： bearing capacity     uplift capacity     under-reamed pile     clay     limit analysis    

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The study of slip line field and upper bound method based on the non-associated flow rule

Zheng Yingren,Deng Chujian,Wang Jinglin

Strategic Study of CAE 2010, Volume 12, Issue 8,   Pages 56-69

Abstract:

The slip line field theory and the upper bound method based on the associatedIn this paper some problems existing in the slip line field theory and the upper bound method based onThe slip line field theory and the upper bound method based on the non-associated flow rule were deducedgeneralized plastic theory , which eliminated some inconsistencies in the slip line field theory and the upperbound method based on the associated flow rule for the traditional plastic theory.

Keywords： slip line field     upper bound method     associated flow rule     non-associated flow rule     generalized plastic    

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The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired solutions

Gui-Rong Liu

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2,   Pages 456-477 doi: 10.1007/s11709-019-0519-5

Abstract: features of S-FEM models are discussed in detail, including 1) theoretically proven softening effects; 2) upper-bound

Keywords： method     strain smoothing technique     smoothing domain     weakened weak form     solid mechanics     softening effect     upperbound solution    

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Study on dynamics of rotary swaging machine driven by servo motor

Song Tao,Zhao Shengdun,Yan Guanhai,Liu Hongbao

Strategic Study of CAE 2013, Volume 15, Issue 1,   Pages 63-67

Abstract: The maximum load of swaging machine was calculated by upper bound method.

Keywords： rotary swaging     servo drive     upper bound method    

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Approaching the upper boundary of driver-response relationships: identifying factors using a novel framework

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 6, doi: 10.1007/s11783-023-1676-2

Abstract:

● A novel framework integrating quantile regression with machine learning is proposed.

Keywords： Driver-response     Upper boundary of relationship     Interpretable machine learning     Quantile regression    

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Effects of environmental factors on the production and release of matrix-bound phosphine from lake sediments

GENG Jinju, WANG Qiang, WANG Xiaorong, NIU Xiaojun

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1,   Pages 120-124 doi: 10.1007/s11783-007-0022-4

Abstract: Results indicated that the elimination of matrix-bound phosphine was accelerated under initial pH 1 orC was the most favorable temperature for the production of matrix-bound phosphine.Oxygen showed little effect on matrix-bound phosphine.Matrix-bound phosphine concentrations in lake sediments were concluded to be dependent on a balance of
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Optimum design and preliminary experiments of a novel parallel end traction apparatus for upper-limb

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 726-746 doi: 10.1007/s11465-021-0651-5

Abstract: Robot-assisted technology has been increasingly employed in the therapy of post stroke patients to deliver high-quality treatment and alleviate therapists’ burden. This paper introduces a novel parallel end traction apparatus (PETA) to supplement equipment selection. Considering the appearance and performance of the PETA, two types of special five-bar linkage mechanisms are selected as the potential configurations of the actuation execution unit because of their compact arrangement and parallel structure. Kinematic analysis of each mechanism, i.e., position solutions and Jacobian matrix, is carried out. Subsequently, a comparative study between the two mechanisms is conducted. In the established source of nondimensional parameter synthesis, the singularity, maximum continuous workspace, and performance variation trends are analyzed. Based on the evaluation results, the final scheme with determined configuration and corresponding near-optimized nondimensional parameters is obtained. Then, a prototype is constructed. By adding a lockable translational degree of freedom in the vertical direction, the PETA can provide 2D planar exercise and 3D spatial exercise. Finally, a control system is developed for passive exercise mode based on the derived inverse position solution, and preliminary experiments are performed to verify the applicability of the PETA.

Keywords： parallel mechanism     upper-limb rehabilitation     singularity and workspace analyses     performance evaluation    

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Simulation of flow excursion and thermal siphon under natural circulation condition with lower pressureand lower quality

WANG Jianjun, YANG Xingtuan, JIANG Shengyao

Frontiers in Energy 2008, Volume 2, Issue 2,   Pages 169-173 doi: 10.1007/s11708-008-0044-z

Abstract: The simulation of flow excursion was conducted under HRTL-5 condition. The mechanism analysis and the simulation of thermal siphon process were also performed. The result shows that the computer code can be used to simulate the static instability of a natural circulation system and the simulation of flow excursion almost conforms to the experiment result.

Keywords： HRTL-5     experiment     circulation     simulation     thermal    

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Regeneration of vernacular architecture: new rammed earth houses on the upper reaches of the Yangtze

Jiaping LIU, Rongrong HU, Liu YANG, Runshan WANG,

Frontiers in Energy 2010, Volume 4, Issue 1,   Pages 93-99 doi: 10.1007/s11708-010-0002-4

Abstract: briefly describes a project about creating a new prototype of earth house for the migrants along the upper

Keywords： earth house     low-energy housing     upper reaches of the Yangtze River     passive solar technique    

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Monovalent Cation Exchange Membranes with Janus Charged Structure for Ion Separation Article

Wenguang Wang, Yanqiu Zhang, Xiaobin Yang, Haixiang Sun, Yadong Wu, Lu Shao

Engineering 2023, Volume 25, Issue 6,   Pages 204-213 doi: 10.1016/j.eng.2021.09.020

Abstract: 8 mol·cm−2·s−1 beyond the contemporary “upperbound” plot as well as the excellent perm-selectivity of 14.11 for Li+/Mg2+

Keywords： Monovalent cation exchange membranes     Janus charged structure     Selectrodialysis     Perm-selectivity     “Upperbound” plot     Ion separation    

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Design and preliminary evaluation of an exoskeleton for upper limb resistance training

Tzong-Ming WU, Dar-Zen CHEN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 188-198 doi: 10.1007/s11465-012-0327-2

Abstract: A compact design of upper limb exoskeleton mechanism for home-based resistance training using a spring-loadedupper limb exoskeleton with a three degree-of-freedom shoulder joint and a one degree-of-freedom elbowjoint allows a patient or a healthy individual to move the upper limb with multiple joints in differentthe spring length to train additional muscle groups and reduce the number of potential injuries to upperverify our prototype of the exoskeleton and determine the optimal configuration of the spring-loaded upper

Keywords： exoskeleton     free-weight exercise     upper limb     motion analysis    

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Title Author Date Type Operation

Modeling limit force capacities of high force to volume lead extrusion dampers

Journal Article

Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Journal Article

Correction to: Effect of undercut on the lower bound stability of vertical rock escarpment using finite

Journal Article

Effect of undercut on the lower bound stability of vertical rock escarpment using finite element and

Shuvankar DAS; Debarghya CHAKRABORTY

Journal Article

Bearing and uplift capacities of under-reamed piles in soft clay underlaid by stiff clay using lower-bound

Mantu MAJUMDER, Debarghya CHAKRABORTY

Journal Article

The study of slip line field and upper bound method based on the non-associated flow rule

Zheng Yingren,Deng Chujian,Wang Jinglin

Journal Article

The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired solutions

Gui-Rong Liu

Journal Article

Study on dynamics of rotary swaging machine driven by servo motor

Song Tao,Zhao Shengdun,Yan Guanhai,Liu Hongbao

Journal Article

Approaching the upper boundary of driver-response relationships: identifying factors using a novel framework

Journal Article

Effects of environmental factors on the production and release of matrix-bound phosphine from lake sediments

GENG Jinju, WANG Qiang, WANG Xiaorong, NIU Xiaojun

Journal Article

Optimum design and preliminary experiments of a novel parallel end traction apparatus for upper-limb

Journal Article

Simulation of flow excursion and thermal siphon under natural circulation condition with lower pressureand lower quality

WANG Jianjun, YANG Xingtuan, JIANG Shengyao

Journal Article

Regeneration of vernacular architecture: new rammed earth houses on the upper reaches of the Yangtze

Jiaping LIU, Rongrong HU, Liu YANG, Runshan WANG,

Journal Article

Monovalent Cation Exchange Membranes with Janus Charged Structure for Ion Separation

Wenguang Wang, Yanqiu Zhang, Xiaobin Yang, Haixiang Sun, Yadong Wu, Lu Shao

Journal Article

Design and preliminary evaluation of an exoskeleton for upper limb resistance training

Tzong-Ming WU, Dar-Zen CHEN

Journal Article