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Influence of steel corrosion on axial and eccentric compression behavior of coral aggregate concrete

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1415-1425 doi: 10.1007/s11709-021-0786-9

Abstract: To study the behavior of coral aggregate concrete (CAC) column under axial and eccentric compression,the compression behavior of CAC column with different types of steel and initial eccentricity (eNu under axial and eccentric compression

Keywords： coral aggregate concrete column     axial compression     eccentric compression     steel corrosion     calculation    

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Behavior of dam concrete under biaxial compression-tension and triaxial compression-compression-tension

WANG Huailiang, SONG Yupu

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 4,   Pages 323-328 doi: 10.1007/s11709-008-0043-5

Abstract: Specimens subjected to biaxial compression-tension (C-T) and triaxial compression-compression-tension

Keywords： requirement     wet-screened concrete     compression-tension     maximum aggregate     principal    

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Effects of compression ratio on the combustion characteristics of a homogeneous charge compression ignition

SONG Ruizhi, ZHOU Longbao, LIU Shenghua, LI Wei, HU Tiegang

Frontiers in Energy 2007, Volume 1, Issue 4,   Pages 463-467 doi: 10.1007/s11708-007-0068-0

Abstract: The effects of homogeneous charge compression ignition (HCCI) engine compression ratio on its combustion

Keywords： homogeneous     cylinder     combustion     compression     dimethyl    

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Numerical study of ignition mechanism of n-heptane direct injection compression-ignition engine

Xiaoping GUO, Zhanjie WANG,

Frontiers in Energy 2009, Volume 3, Issue 4,   Pages 432-439 doi: 10.1007/s11708-009-0050-9

Abstract: A detailed chemical dynamical mechanism of oxidation of n-heptane was implemented into kiva-3 code to study the ignition mechanism of a high-temperature, high-pressure, three-dimensional-space, transient turbulent, non-homogeneous, mono-component fuel in the engine. By testing the quantity of the heat released by the chemical reaction within the cylinder cell, the elementary reaction showing an obvious increase in the cell temperature was defined as ignition reaction and the corresponding cell as ignition position. The main pathway of the ignition reaction was studied by using the reverse deducing method. The result shows that the ignition in the engine can be divided into low-temperature ignition and high-temperature ignition, both of which follow the same rule in releasing heat, called the impulse heat releasing feature. Low-temperature ignition reaction, whose ignition reaction is c5h9o1-4=ch3cho+c3h5-a, follows the oxidation mechanism, while high-temperature ignition reaction, whose ignition reaction is c2h3o1-2=ch3co, follows the decomposition mechanism. No matter which ignition it is in, the chemical reaction that restrains the ignition reaction from lasting is the deoxidization reaction of alkylperoxy radicals.

Keywords： compression-ignition engine     ignition mechanism     elementary reaction     n-heptane    

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Three-dimensional numerical simulation for plastic injection-compression molding

Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 1,   Pages 74-84 doi: 10.1007/s11465-018-0490-1

Abstract:

Compared with conventional injection molding, injection-compression molding can mold optical partsmelt flow process in a closed cavity becomes more complex because of the moving cavity boundary during compressionIn this study, a 3D simulation method was developed for injection-compression molding.method, arbitrary Lagrangian-Eulerian was introduced to model the moving-boundary flow problem in the compressionreveal that the fountain flow effect becomes significant when the cavity thickness increases during compression

Keywords： injection-compression molding     simulation     injection molding     melt flow     cavity pressure    

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Improvement of engine performance with high compression ratio based on knock suppression using Miller

Haiqiao WEI, Jie YU, Lei ZHOU

Frontiers in Energy 2019, Volume 13, Issue 4,   Pages 691-706 doi: 10.1007/s11708-019-0621-3

Abstract: In theory, high compression ratio has the potential to improve the thermal efficiency and promote theHowever, the application of high compression ratio is substantially limited by the knock in practicalThe objective of this work is to comprehensively investigate the application of high compression ratioratio similar to CR10, which could eliminate the knock limits at a high compression ratio and high loadTo verify the advantages of the high compression ratio, the fuel economy and power performance of CR10

Keywords： high compression ratio     knock     Miller cycle     split injection     engine performance    

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Efficient controller area network data compression for automobile applications

Yu-jing WU,Jin-Gyun CHUNG

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 1,   Pages 70-78 doi: 10.1631/FITEE.1400136

Abstract: In this paper, we present a CAN message compression method to reduce the CAN frame length.By using an embedded test board, we show that 64-bit engine management system (EMS) CAN data compression

Keywords： Controller area network (CAN)     Electronic control units (ECUs)     Data compression     Signal rearrangement    

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Schedule Compression Impact on Construction Project Safety

Curt Webb,Lu Gao,Ling-guang Song

Frontiers of Engineering Management 2015, Volume 2, Issue 4,   Pages 344-350 doi: 10.15302/J-FEM-2015059

Abstract: In addition, construction schedulers are frequently forced to incorporate aggressive schedule compressionAs already discussed by previous researchers, these schedule compression techniques have direct impactsResearchers have also pointed out that schedule compression will affect safety incidents such as Occupationaland project quality, and minimal research has been done to directly quantify the effect of schedule compressionresearch, we conducted a survey and statistical analysis to investigate the relationship between schedule compression

Keywords： construction safety     schedule compression     overtime     work shift     Hurdle model    

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Performance analysis of solar absorption-subcooled compression hybrid refrigeration system in subtropical

Xiangyang YE,Liming LIU,Zeyu LI

Frontiers in Energy 2019, Volume 13, Issue 1,   Pages 185-192 doi: 10.1007/s11708-017-0452-z

Abstract: Solar absorption-subcooled compression hybrid refrigeration system is a new type of efficient and economicalsimultaneously, the variation of working process as well as performance is complicated since the absorption and compression

Keywords： solar     absorption-subcooled     compression hybrid     dynamic simulation     performance analysis    

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Primary spinal epidural non-Hodgkin’s lymphoma presented with spinal cord compression syndrome

Chunquan CAI MD, PhD, Qingjiang ZHANG BM, Changhong SHEN MD, PhD,

Frontiers of Medicine 2009, Volume 3, Issue 4,   Pages 499-502 doi: 10.1007/s11684-009-0075-9

Abstract: A boy suffered spinal cord compression syndrome caused by primary spinal epidural non-Hodgkin’s

Keywords： non-Hodgkin’     s lymphoma     primary     spinal cord compression syndrome     epidural space    

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Differential diagnosis of cervical nerve compression syndrome of the external intervertebral foramen

WANG Jinwu, NI Weifeng, XU Jianguang, ZHU Haibo, GUO Shangchun, ZENG Bingfang, ZHAO Binghui

Frontiers of Medicine 2007, Volume 1, Issue 2,   Pages 177-180 doi: 10.1007/s11684-007-0033-3

Abstract: The aim of the present research is to study the mechanism of cervical nerve compression syndrome of theFifteen cases with cervical nerve compression syndrome of the external intervertebral foramen were healedThe etiology of cervical nerve compression syndrome of the external intervertebral foramen lies in thecompression of the cervical plexus, brachial plexus and cervical dorsal rami by the tendinous decussatingDiagnostic treatment was propitious to differentiate cervical nerve compression syndrome of the external

Keywords： satisfactory     COX     minimus     operation     compression syndrome    

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Shear assessment of compression flanges of structural concrete T-beams

Bj?rn SCHüTTE,Viktor SIGRIST

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 354-361 doi: 10.1007/s11709-014-0082-z

Abstract: In T-beams the force transfer from the web into the flange has to be studied. The general design procedure is based on a strut-and-tie (or a stress field) model which comprises spreading compressive and transverse tensile forces. As is known, strut-and-tie models represent the force flow within a structural member at ultimate. This procedure is sufficient for design purposes and in general, leads to safe results. For the assessment of a structure it may be worthwhile to improve the accuracy. For this purpose both web and flange have to be looked at more in detail. An advanced method for the analysis of webs in shear is the Generalized Stress Field Approach [ ]. This approach can be utilized for treating flanges, where the classical assumptions have to be adapted; in particular by considering the strain dependence of the concrete compressive strength and thus, defining a representative strain value. In the present contribution background and details of these aspects are given, and the corresponding calculation procedure is described. Theoretical results are compared with experimental data and show a reasonably good agreement. However, as the number of sufficiently documented tests is very limited no concluding findings are attained.

Keywords： concrete structures     structural assessment     stress field analysis     shear    

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Numerical study of a hybrid absorption-compression high temperature heat pump for industrial waste heat

Zhiwei MA, Huashan BAO, Anthony Paul ROSKILLY

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 503-509 doi: 10.1007/s11708-017-0515-1

Abstract: The present paper aims at exploring a hybrid absorption-compression heat pump (HAC-HP) to upgrade andpressure of ammonia-water vapor desorbed in the generator can be elevated by two routes; one is via the compression

Keywords： absorption compression     high temperature heat pump     efficiency     industrial waste heat     thermodynamic analysis    

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Ductility improvement of GFRP-RC beams using precast confined concrete block in compression zone

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0968-8

Abstract: Because the limited deformation capacity of FRP-RC beams depends on the ductility of their compressionzones, the present study proposes using a precast confined concrete block (PCCB) in the compressionThe goal was to find an appropriate PCCB for use in the compression zone of the beams, which not only

Keywords： ductility     four-point bending test     glass fiber-reinforced polymer     precast confined concrete block    

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Axial compression tests and numerical simulation of steel reinforced recycled concrete short columns

Hui MA; Fangda LIU; Yanan WU; Xin A; Yanli ZHAO

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 7,   Pages 817-842 doi: 10.1007/s11709-022-0844-y

Abstract: To research the axial compression behavior of steel reinforced recycled concrete (SRRC) short columnsplastics (CFRP) strips, nine scaled specimens of SRRC short columns were fabricated and tested under axial compressionCFRP strips, spacing of CFRP strips and strength of recycled aggregate concrete (RAC) on the axial compression

Keywords： steel reinforced recycled concrete     CFRP strips     short columns     axial compression behavior     recycled    

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Title Author Date Type Operation

Influence of steel corrosion on axial and eccentric compression behavior of coral aggregate concrete

Journal Article

Behavior of dam concrete under biaxial compression-tension and triaxial compression-compression-tension

WANG Huailiang, SONG Yupu

Journal Article

Effects of compression ratio on the combustion characteristics of a homogeneous charge compression ignition

SONG Ruizhi, ZHOU Longbao, LIU Shenghua, LI Wei, HU Tiegang

Journal Article

Numerical study of ignition mechanism of n-heptane direct injection compression-ignition engine

Xiaoping GUO, Zhanjie WANG,

Journal Article

Three-dimensional numerical simulation for plastic injection-compression molding

Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI

Journal Article

Improvement of engine performance with high compression ratio based on knock suppression using Miller

Haiqiao WEI, Jie YU, Lei ZHOU

Journal Article

Efficient controller area network data compression for automobile applications

Yu-jing WU,Jin-Gyun CHUNG

Journal Article

Schedule Compression Impact on Construction Project Safety

Curt Webb,Lu Gao,Ling-guang Song

Journal Article

Performance analysis of solar absorption-subcooled compression hybrid refrigeration system in subtropical

Xiangyang YE,Liming LIU,Zeyu LI

Journal Article

Primary spinal epidural non-Hodgkin’s lymphoma presented with spinal cord compression syndrome

Chunquan CAI MD, PhD, Qingjiang ZHANG BM, Changhong SHEN MD, PhD,

Journal Article

Differential diagnosis of cervical nerve compression syndrome of the external intervertebral foramen

WANG Jinwu, NI Weifeng, XU Jianguang, ZHU Haibo, GUO Shangchun, ZENG Bingfang, ZHAO Binghui

Journal Article

Shear assessment of compression flanges of structural concrete T-beams

Bj?rn SCHüTTE,Viktor SIGRIST

Journal Article

Numerical study of a hybrid absorption-compression high temperature heat pump for industrial waste heat

Zhiwei MA, Huashan BAO, Anthony Paul ROSKILLY

Journal Article

Ductility improvement of GFRP-RC beams using precast confined concrete block in compression zone

Journal Article

Axial compression tests and numerical simulation of steel reinforced recycled concrete short columns

Hui MA; Fangda LIU; Yanan WU; Xin A; Yanli ZHAO

Journal Article