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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: relationship between the corrosion damage and amount of ettringite is proposed based on the theory of volume expansionIn addition, the expansion strain at the macro-scale is obtained using a stress analysis model of compositeconsidering the influence of corrosion damage and cement hydration on the diffusion of sulfate ions, the expansionThe results demonstrate that the expansion strains calculated using the suggested model agree well with

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

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Stress-strain relationship with soil structural parameters of collapse loess

SHAO Shengjun, LONG Jiyong, YU Qinggao

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 2,   Pages 151-160 doi: 10.1007/s11709-008-0020-z

Abstract: the structural stress-strain relation.The tests reveal that the loess dilatancy is of shearing contraction and shearing expansion, wherebyindicating that there is a good linear relation between the stress ratio and shearing expansion strainThe larger consolidation confining pressure is, the larger the stress of shearing contraction and expansionsoftening and hardening, and shearing contraction and shearing expansion features.

Keywords： hardening     shearing expansion     unsaturated     structural property     mathematical expression    

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Study on temperature effects of single expansion joint bridge

Zhao Yibin and Shao Xudong

Strategic Study of CAE 2012, Volume 14, Issue 10,   Pages 103-112

Abstract: style="text-align: justify;">There are some problems of easy damage and arduous maintenance in the expansionjoints at abutment, and a new type of single expansion joint bridge (SEJB) is herein proposed to dealFor example, under the effect of temperature drop of 20 ℃, the maximum steel stress was 148 MPa, andwidth was 0.185 mm for a 280 m length SEJB, which met the requirement of criterion; the additional stressInternal force is reduced by using bearing and cushion materials with low surface friction coefficient

Keywords： single expansion bridge     temperature effect     stress and deformation     theoretical formula     parameter analysis    

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Cylindrical particulate internal flows: A review

Lizhong HUANG, Xiang GAO, Jianzhong LIN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 4,   Pages 385-393 doi: 10.1007/s11465-012-0354-z

Abstract:

The study of cylindrical particulate internal flows has wide industrial applicability hence receivedThis article reviews the cylindrical particulate internal flows over the past twenty years.

Keywords： cylindrical particulate flow     internal flow    

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Current progress on internal medicine in China—2006 Part I

YAO Dingkang, ZHU Liang, ZHAO Xue, MEI Changlin

Frontiers of Medicine 2007, Volume 1, Issue 3,   Pages 235-247 doi: 10.1007/s11684-007-0046-y

Abstract: The growing interest has been placed in the current state of Chinaºs internal medicine from all overMany data of internal medicine in China were collected by searching through some of the most prominentBecause there are many researches on the field of internal medicine, just some representative reports

Keywords： internal medicine     Chinaºs internal     respiration     gastroenterology     cardiology    

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Unified cycle model of a class of internal combustion engines and their optimum performance characteristics

Shiyan ZHENG

Frontiers in Energy 2011, Volume 5, Issue 4,   Pages 367-375 doi: 10.1007/s11708-011-0170-x

Abstract: The unified cycle model of a class of internal combustion engines is presented, in which the influenceparameters such as the high-low pressure ratio, the high-low temperature ratio, the compression and expansion

Keywords： internal combustion engine     irreversibility     power output     efficiency     optimization    

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An Empirical Study on the Internal Control Efficiency of Listed Engineering Companies

Zhi-wen Wang,Jing Tong

Frontiers of Engineering Management 2015, Volume 2, Issue 2,   Pages 159-164 doi: 10.15302/J-FEM-2015026

Abstract: The authors carried out an empirical study on the internal control efficiency of publically listed engineeringrelationship of independent director ratios, audit committee quality and auditor independence with the internalpublically listed engineering companies and forward suggestions and recommendations on raising the internal

Keywords： internal control efficiency     board of directors     independent directors     audit committee    

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A MATLAB code for the material-field series-expansion topology optimization method

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 607-622 doi: 10.1007/s11465-021-0637-3

Abstract: This paper presents a MATLAB implementation of the material-field series-expansion (MFSE) topo-logy optimizationWith the series-expansion method for bounded fields, this material field is described with the characteristic

Keywords： MATLAB implementation     topology optimization     material-field series-expansion method     bounded material    

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A family of non-conforming crack front elements of quadrilateral and triangular types for 3D crack problems using the boundary element method

Guizhong XIE, Fenglin ZHOU, Hao LI, Xiaoyu WEN, Fannian MENG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3,   Pages 332-341 doi: 10.1007/s11465-019-0540-3

Abstract: This study focuses on establishing non-conforming crack front elements of quadrilateral and triangular types for 3D crack problems when the dual boundary element method is applied. The asymptotic behavior of the physical variables in the area near the crack front is fully considered in the construction of the shape function. In the developed quadrilateral and triangular crack front elements, the asymptotic term, which captures the asymptotic behavior of the physical variable, is multiplied directly by the conventional Lagrange shape function to form a new crack front shape function. Several benchmark numerical examples that consider penny-shaped cracks and straight-edge crack problems are presented to illustrate the validity and efficiency of the developed crack front elements.

Keywords： Taylor expansion     crack front elements     stress intensity factors     dual boundary element method    

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Assessment of bridge expansion joints using long-term displacement measurement under changing environmental

Youliang DING, Aiqun LI

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 3,   Pages 374-380 doi: 10.1007/s11709-011-0122-x

Abstract: This paper addresses the problem of condition assessment of bridge expansion joints using long-term measurementThe effects of temperature, traffic loading and wind on the expansion joint displacements are analyzedStatistical process control using mean value control charts is further used to detect damage to the bridge expansionhad a good capability for detecting the damage-induced 1.0% variances of the annual changes in the expansion

Keywords： structural health monitoring     displacement     expansion joint     temperature effect     wind effect     traffic loading    

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An approach for evaluating the impact of an intermittent renewable energy source on transmission expansion

Rongrit CHATTHAWORN,Surachai CHAITUSANEY

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 10,   Pages 871-882 doi: 10.1631/FITEE.1500049

Abstract: optimization approach to evaluate the impact of an intermittent renewable energy source on transmission expansionscenarios representing the intermittent renewable energy generation and loads is proposed to obtain robust expansionMoreover, the impact of an intermittent renewable energy source on TEP was evaluated by comparing expansion

Keywords： Adaptive tabu search     Renewable energy generation     Robust optimization     Transmission expansion planning    

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Embankment dam foundation analysis for the decrease of internal erosion likelihood

Marc SMITH

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 4,   Pages 431-436 doi: 10.1007/s11709-012-0183-5

Abstract: , pore pressures in sand are higher and thus where the factor of safety against uplift is lower and internal

Keywords： seepage detection     geostatistical analysis     dam monitoring     internal erosion     LIDAR survey    

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Achieving desired nodal lines in freely vibrating structures via material-field series-expansion topology

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0758-y

Abstract: In this study, an effective material-field series-expansion (MFSE)-based topology optimization design

Keywords： nodal line     topology optimization     structural dynamics design     material-field series-expansion    

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Advances in polishing of internal structures on parts made by laser-based powder bed fusion

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 1, doi: 10.1007/s11465-022-0724-0

Abstract: The internal structures of metallic products are important in realizing functional applications.In this article, process, basic forms, and applications relevant to L-PBF internal structures are reviewed

Keywords： laser-based powder bed fusion     polishing     internal structures     surface quality     surface features     post    

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investigation of the chemical and electrochemical characteristics of planar solid oxide fuel cell with direct internal

Yuzhang WANG, Shilie WENG, Yiwu WENG

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 195-206 doi: 10.1007/s11708-011-0148-8

Abstract: three-dimensional mathematical model of a planar solid oxide fuel cell (SOFC) with complete direct internal

Keywords： planar solid oxide fuel cell (SOFC)     direct internal reforming     chemical reaction     methane     electrochemical    

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Title Author Date Type Operation

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

Journal Article

Stress-strain relationship with soil structural parameters of collapse loess

SHAO Shengjun, LONG Jiyong, YU Qinggao

Journal Article

Study on temperature effects of single expansion joint bridge

Zhao Yibin and Shao Xudong

Journal Article

Cylindrical particulate internal flows: A review

Lizhong HUANG, Xiang GAO, Jianzhong LIN

Journal Article

Current progress on internal medicine in China—2006 Part I

YAO Dingkang, ZHU Liang, ZHAO Xue, MEI Changlin

Journal Article

Unified cycle model of a class of internal combustion engines and their optimum performance characteristics

Shiyan ZHENG

Journal Article

An Empirical Study on the Internal Control Efficiency of Listed Engineering Companies

Zhi-wen Wang,Jing Tong

Journal Article

A MATLAB code for the material-field series-expansion topology optimization method

Journal Article

A family of non-conforming crack front elements of quadrilateral and triangular types for 3D crack problems using the boundary element method

Guizhong XIE, Fenglin ZHOU, Hao LI, Xiaoyu WEN, Fannian MENG

Journal Article

Assessment of bridge expansion joints using long-term displacement measurement under changing environmental

Youliang DING, Aiqun LI

Journal Article

An approach for evaluating the impact of an intermittent renewable energy source on transmission expansion

Rongrit CHATTHAWORN,Surachai CHAITUSANEY

Journal Article

Embankment dam foundation analysis for the decrease of internal erosion likelihood

Marc SMITH

Journal Article

Achieving desired nodal lines in freely vibrating structures via material-field series-expansion topology

Journal Article

Advances in polishing of internal structures on parts made by laser-based powder bed fusion

Journal Article

investigation of the chemical and electrochemical characteristics of planar solid oxide fuel cell with direct internal

Yuzhang WANG, Shilie WENG, Yiwu WENG

Journal Article