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Haiqiao WEI, Jie YU, Lei ZHOU
《能源前沿(英文)》 2019年 第13卷 第4期 页码 691-706 doi: 10.1007/s11708-019-0621-3
关键词: high compression ratio knock Miller cycle split injection engine performance
SONG Ruizhi, ZHOU Longbao, LIU Shenghua, LI Wei, HU Tiegang
《能源前沿(英文)》 2007年 第1卷 第4期 页码 463-467 doi: 10.1007/s11708-007-0068-0
Zhiwei MA, Huashan BAO, Anthony Paul ROSKILLY
《能源前沿(英文)》 2017年 第11卷 第4期 页码 503-509 doi: 10.1007/s11708-017-0515-1
关键词: absorption compression high temperature heat pump efficiency industrial waste heat thermodynamic analysis
Investigation of the interior RC beam-column joints under monotonic antisymmetrical load
Fei GAO, Zhiqiang TANG, Biao HU, Junbo CHEN, Hongping ZHU, Jian MA
《结构与土木工程前沿(英文)》 2019年 第13卷 第6期 页码 1474-1494 doi: 10.1007/s11709-019-0572-0
关键词: RC beam-column joint reinforcement ratio in joint core axial compression ratio finite element test
The stress relaxation of cement clinkers under high temperature
Xiufang WANG,Yiwang BAO,Xiaogen LIU,Yan QIU
《机械工程前沿(英文)》 2015年 第10卷 第4期 页码 413-417 doi: 10.1007/s11465-015-0357-7
The energy consumption of crushing is directly affected by the mechanical properties of cement materials. This research provides a theoretical proof for the mechanism of the stress relaxation of cement clinkers under high temperature. Compression stress relaxation under various high temperatures is discussed using a specially developed load cell, which can measure stress and displacement under high temperatures inside an autoclave. The cell shows that stress relaxation dramatically increases and that the remaining stress rapidly decreases with an increase in temperature. Mechanical experiments are conducted under various temperatures during the cooling process to study the changes in the grinding resistance of the cement clinker with temperature. The effects of high temperature on the load-displacement curve, compressive strength, and elastic modulus of cement clinkers are systematically studied. Results show that the hardening phenomenon of the clinker becomes apparent with a decrease in temperature and that post-peak behaviors manifest characteristics of the transformation from plasticity to brittleness. The elastic modulus and compressive strength of cement clinkers increase with a decrease in temperature. The elastic modulus increases greatly when the temperature is lower than 1000 °C. The compressive strength of clinkers increases by 73.4% when the temperature drops from 1100 to 800 °C.
关键词: stress relaxation high temperature cement clinker compression elastic modulus
Influence of steel corrosion on axial and eccentric compression behavior of coral aggregate concrete
《结构与土木工程前沿(英文)》 2021年 第15卷 第6期 页码 1415-1425 doi: 10.1007/s11709-021-0786-9
关键词: coral aggregate concrete column axial compression eccentric compression steel corrosion calculation model
Effect of cavity defect on the triaxial mechanical properties of high-performance concrete
Yanbin ZHANG; Zhe WANG; Mingyu FENG
《结构与土木工程前沿(英文)》 2022年 第16卷 第5期 页码 600-614 doi: 10.1007/s11709-022-0821-5
关键词: high-performance concrete cavity conventional triaxial compression pressurized liquid modified power-law criterion
WANG Huailiang, SONG Yupu
《结构与土木工程前沿(英文)》 2008年 第2卷 第4期 页码 323-328 doi: 10.1007/s11709-008-0043-5
关键词: requirement wet-screened concrete compression-tension maximum aggregate principal
《能源前沿(英文)》 2023年 第17卷 第5期 页码 678-691 doi: 10.1007/s11708-022-0859-z
关键词: gasoline compression ignition injection strategy fuel stratification high efficiency high load
《结构与土木工程前沿(英文)》 2023年 第17卷 第5期 页码 704-721 doi: 10.1007/s11709-023-0941-6
关键词: precast steel–UHPC composite beam flexural performance longitudinal shear performance parametric study transverse reinforcement ratio
Numerical study of ignition mechanism of n-heptane direct injection compression-ignition engine
Xiaoping GUO, Zhanjie WANG,
《能源前沿(英文)》 2009年 第3卷 第4期 页码 432-439 doi: 10.1007/s11708-009-0050-9
关键词: compression-ignition engine ignition mechanism elementary reaction n-heptane
Three-dimensional numerical simulation for plastic injection-compression molding
Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 74-84 doi: 10.1007/s11465-018-0490-1
Compared with conventional injection molding, injection-compression molding can mold optical parts with higher precision and lower flow residual stress. However, the melt flow process in a closed cavity becomes more complex because of the moving cavity boundary during compression and the nonlinear problems caused by non-Newtonian polymer melt. In this study, a 3D simulation method was developed for injection-compression molding. In this method, arbitrary Lagrangian-Eulerian was introduced to model the moving-boundary flow problem in the compression stage. The non-Newtonian characteristics and compressibility of the polymer melt were considered. The melt flow and pressure distribution in the cavity were investigated by using the proposed simulation method and compared with those of injection molding. Results reveal that the fountain flow effect becomes significant when the cavity thickness increases during compression. The back flow also plays an important role in the flow pattern and redistribution of cavity pressure. The discrepancy in pressures at different points along the flow path is complicated rather than monotonically decreased in injection molding.
关键词: injection-compression molding simulation injection molding melt flow cavity pressure
金士尧,胡华平,李宏亮
《中国工程科学》 1999年 第1卷 第3期 页码 46-50
为了确保高的可用性,在重大工程实践中往往采用具有容错结构的计算机双系统。双系统处理得到两个结果的异同性,历来是研究双系统容错的技术重点和难点。文章在双系统可用性分析、结果判错与选择、以及双工切换技术方面都有突破性的进展,并在重点工程中得以实现,取得显著效果。
Wind tunnel test study on the wind pressure coefficient of claddings of high-rise buildings
Yong QUAN, Yi LIANG, Fei WANG, Ming GU
《结构与土木工程前沿(英文)》 2011年 第5卷 第4期 页码 518-524 doi: 10.1007/s11709-011-0128-4
关键词: side ratio area-averaged pressure coefficients cladding terrain category
Bin HU, Di WU, L.W. WANG, R.Z. WANG
《能源前沿(英文)》 2017年 第11卷 第4期 页码 493-502 doi: 10.1007/s11708-017-0510-6
关键词: multi-stage compression high temperature heat pump heat recovery exergy destruction R1234ze(Z) working fluid
标题 作者 时间 类型 操作
Improvement of engine performance with high compression ratio based on knock suppression using Miller
Haiqiao WEI, Jie YU, Lei ZHOU
期刊论文
Effects of compression ratio on the combustion characteristics of a homogeneous charge compression ignition
SONG Ruizhi, ZHOU Longbao, LIU Shenghua, LI Wei, HU Tiegang
期刊论文
Numerical study of a hybrid absorption-compression high temperature heat pump for industrial waste heat
Zhiwei MA, Huashan BAO, Anthony Paul ROSKILLY
期刊论文
Investigation of the interior RC beam-column joints under monotonic antisymmetrical load
Fei GAO, Zhiqiang TANG, Biao HU, Junbo CHEN, Hongping ZHU, Jian MA
期刊论文
The stress relaxation of cement clinkers under high temperature
Xiufang WANG,Yiwang BAO,Xiaogen LIU,Yan QIU
期刊论文
Influence of steel corrosion on axial and eccentric compression behavior of coral aggregate concrete
期刊论文
Effect of cavity defect on the triaxial mechanical properties of high-performance concrete
Yanbin ZHANG; Zhe WANG; Mingyu FENG
期刊论文
Behavior of dam concrete under biaxial compression-tension and triaxial compression-compression-tension
WANG Huailiang, SONG Yupu
期刊论文
A methodology for regulating fuel stratification and improving fuel economy of GCI mode via double main-injection strategy
期刊论文
Flexural and longitudinal shear performance of precast lightweight steel–ultra-high performance concrete
期刊论文
Numerical study of ignition mechanism of n-heptane direct injection compression-ignition engine
Xiaoping GUO, Zhanjie WANG,
期刊论文
Three-dimensional numerical simulation for plastic injection-compression molding
Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI
期刊论文
Wind tunnel test study on the wind pressure coefficient of claddings of high-rise buildings
Yong QUAN, Yi LIANG, Fei WANG, Ming GU
期刊论文