资源类型

期刊论文 291

会议视频 3

年份

2024 1

2023 15

2022 18

2021 29

2020 28

2019 21

2018 20

2017 11

2016 23

2015 15

2014 8

2013 6

2012 11

2011 12

2010 8

2009 6

2008 16

2007 23

2006 2

2005 1

展开 ︾

关键词

应力状态 3

一阶分析法 2

增材制造 2

3D打印 1

ARMA模型 1

Arrhenius模型 1

Grade 91钢 1

Hugoniot 1

ISO14000标准 1

LED，颜色漂移，光通量衰减，流明衰减 1

Matlab/Simulink仿真 1

NASICON 1

RTK GPS系统 1

TNT装药爆炸 1

Weibull分布 1

π-演算 1

“白箱”模型 1

三向受力状态 1

展开 ︾

检索范围：

排序： 展示方式：

Challenges of high dam construction to computational mechanics

ZHANG Chuhan

《结构与土木工程前沿（英文）》 2007年 第1卷 第1期   页码 12-33 doi: 10.1007/s11709-007-0002-6

摘要： The current situations and growing prospects of China s hydro-power development and high dam construction are reviewed, giving emphasis to key issues for safety evaluation of large dams and hydro-power plants, especially those associated with application of state-of-the-art computational mechanics. These include but are not limited to: stress and stability analysis of dam foundations under external loads; earthquake behavior of dam-foundation-reservoir systems, mechanical properties of mass concrete for dams, high velocity flow and energy dissipation for high dams, scientific and technical problems of hydro-power plants and underground structures, and newly developed types of dam-Roll Com pacted Concrete (RCC) dams and Concrete Face Rock-fill (CFR) dams. Some examples demonstrating successful utilizations of computational mechanics in high dam engineering are given, including seismic nonlinear analysis for arch dam foundations, nonlinear fracture analysis of arch dams under reservoir loads, and failure analysis of arch dam-foundations. To make more use of the computational mechanics in high dam engineering, it is pointed out that much research including different computational methods, numerical models and solution schemes, and verifications through experimental tests and filed measurements is necessary in the future.

关键词： reservoir     engineering     hydro-power development     state-of-the-art computational     earthquake    

HTML PDF 收藏

State-of-the-art of long-span bridge engineering in China

XIANG Haifan, GE Yaojun

《结构与土木工程前沿（英文）》 2007年 第1卷 第4期   页码 379-388 doi: 10.1007/s11709-007-0051-x

摘要： This paper introduces the state-of-the-art of longspan bridge engineering in China with emphases on recent long-span bridge projects, bridge deck configuration and material, design codes of long-span bridges and improvement of aero

关键词： bridge engineering     state-of-the-art     long-span bridge     configuration     improvement    

HTML PDF 收藏

A state-of-the-art review of solar passive building system for heating or cooling purpose

Arun Kumar NANDA,C K PANIGRAHI

《能源前沿（英文）》 2016年 第10卷 第3期   页码 347-354 doi: 10.1007/s11708-016-0403-0

摘要： The major portion of energy in a building is consumed by heating, ventilating, and air-conditioning (HVAC). The traditional heating and cooling systems contribute greatly to the emission of greenhouse gases, especially carbon dioxide. Four different ways, i.e., Trombe wall, solar chimney, unglazed transpired solar façade, and solar roof, are adopted for solar heating. Similarly, two major ways, i.e., evaporative cooling and building integrated evaporative cooling are adopted for cooling of the building. Therefore, an attempt has been made in this paper to compile the developments of solar heating and cooling technologies in a building.

关键词： HVAC     heating     cooling     solar heating     carbon dioxide (CO2) emissions    

HTML PDF 收藏

A state-of-the-art review on interfacial behavior between asphalt binder and mineral aggregate

Meng GUO, Yiqiu TAN, Linbing WANG, Yue HOU

《结构与土木工程前沿（英文）》 2018年 第12卷 第2期   页码 248-259 doi: 10.1007/s11709-017-0422-x

摘要： The interface between asphalt binder and mineral aggregate directly affects the service life of pavement because the defects and stress concentration occur more easily there. The interaction between asphalt binder and mineral aggregate is the main cause of forming the interface. This paper presents an extensive review on the test technologies and analysis methods of interfacial interaction, including molecular dynamics simulation, phase field approach, absorption tests, rheological methods and macro mechanical tests. All of the studies conducted on this topic clearly indicated that the interfacial interaction between asphalt binder and mineral aggregate is a physical-chemical process, and can be qualitatively characterized by microscopical technique (such as SEM and AFM), and also can be quantitatively evaluated by rheological methods and interfacial mechanical tests. Molecular dynamics simulation and phase field approach were also demonstrated to be effective methods to study the interfacial behavior and its mechanism.

关键词： Asphalt binder     Mineral aggregate     Interfacial behavior     Multiscale    

HTML PDF 收藏

Hot-dip galvanizing of cold-formed steel hollow sections: a state-of-the-art review

Min SUN, Jeffrey A. PACKER

《结构与土木工程前沿（英文）》 2019年 第13卷 第1期   页码 49-65 doi: 10.1007/s11709-017-0448-0

摘要： A good understanding of the effects of galvanizing on the short- and long-term behaviours of steel components is essential for structural design. This review paper is motivated by a series of recent reports on cracking in galvanized cold-formed tubular steel structures and the limitations of current steel product standards and steel design specifications in this field. The steel-related and galvanizing-related factors, different pre-galvanizing countermeasures for brittle cracking and the available technical documents are summarized. An extensive bibliography is provided as a basis for future research and development in this field.

关键词： cold-formed steel     hollow structural sections     hot-dip galvanizing     embrittlement     heat-treatment     residual stress     cracking    

HTML PDF 收藏

State-of-the-art on theories and applications of cable-driven parallel robots

《机械工程前沿（英文）》 2022年 第17卷 第3期 doi: 10.1007/s11465-022-0693-3

摘要： Cable-driven parallel robot (CDPR) is a type of high-performance robot that integrates cable-driven kinematic chains and parallel mechanism theory. It inherits the high dynamics and heavy load capacities of the parallel mechanism and significantly improves the workspace, cost and energy efficiency simultaneously. As a result, CDPRs have had irreplaceable roles in industrial and technological fields, such as astronomy, aerospace, logistics, simulators, and rehabilitation. CDPRs follow the cutting-edge trend of rigid–flexible fusion, reflect advanced lightweight design concepts, and have become a frontier topic in robotics research. This paper summarizes the kernel theories and developments of CDPRs, covering configuration design, cable-force distribution, workspace and stiffness, performance evaluation, optimization, and motion control. Kinematic modeling, workspace analysis, and cable-force solution are illustrated. Stiffness and dynamic modeling methods are discussed. To further promote the development, researchers should strengthen the investigation in configuration innovation, rapid calculation of workspace, performance evaluation, stiffness control, and rigid–flexible coupling dynamics. In addition, engineering problems such as cable materials, reliability design, and a unified control framework require attention.

关键词： cable-driven parallel robot     kinematics     optimization     dynamics     control    

HTML PDF 收藏

A survey of photon mapping state-of-the-art research and future challenges

Chun-meng KANG,Lu WAN,Yan-ning XU,Xiang-xu MENG

《信息与电子工程前沿（英文）》 2016年 第17卷 第3期   页码 185-199 doi: 10.1631/FITEE.1500251

摘要： Global illumination is the core part of photo-realistic rendering. The photon mapping algorithm is an effective method for computing global illumination with its obvious advantage of caustic and color bleeding rendering. It is an active research field that has been developed over the past two decades. The deficiency of precise details and efficient rendering are still the main challenges of photon mapping. This report reviews recent work and classifies it into a set of categories including radiance estimation, photon relaxation, photon tracing, progressive photon mapping, and parallel methods. The goals of our report are giving readers an overall introduction to photon mapping and motivating further research to address the limitations of existing methods.

关键词： Global illumination     Photon mapping     Radiance estimation     Photon relaxation     Progressive photon mapping    

HTML PDF 收藏

State-of-the-art applications of machine learning in the life cycle of solid waste management

《环境科学与工程前沿（英文）》 2023年 第17卷 第4期 doi: 10.1007/s11783-023-1644-x

摘要：

● State-of-the-art applications of machine learning (ML) in solid waste (SW) is presented.

关键词： Machine learning (ML)     Solid waste (SW)     Bibliometrics     SW management     Energy utilization     Life cycle    

HTML PDF 收藏

Dynamic material performance of cold-formed steel hollow sections: a state-of-the-art review

Cameron B. RITCHIE, Jeffrey A. PACKER, Xiao-Ling ZHAO, Amin HEIDARPOUR, Yiyi CHEN

《结构与土木工程前沿（英文）》 2017年 第11卷 第2期   页码 209-227 doi: 10.1007/s11709-017-0388-8

摘要： This paper presents a literature review focused on the material performance of cold-formed, carbon steel, hollow structural sections under impulsive (highly dynamic) loading. Impulsive loading, represented by impact and blast, is characterized by a very rapid, time-dependent loading regime in the affected members and materials. Thus, the effect of high-strain-rate loading is initially reviewed. Next the material toughness, an important energy-absorption property and one measure of a material’s ability to arrest fracture, is considered by means of studying the Charpy V-notch behavior. The response of hollow sections under axial and lateral impact loading is then reviewed. ??Studies of blast on hollow sections, most of which fall under the categories of contact/near-field loading or far-field loading are presented. Under large-scale field blast experiments, cold-formed hollow sections have shown excellent behavior. Software for modeling blast loading and structural response, the latter including single degree of freedom analysis and explicit finite element analysis, is described and discussed.

关键词： cold-formed steel     hollow structural sections     composites     impulsive loading     impact     blast     experimentation     analysis     material properties    

HTML PDF 收藏

Classical and state-of-the-art approaches for underwater image defogging: a comprehensive survey

Jing-chun Zhou, De-huan Zhang, Wei-shi Zhang,zhoujingchun@dlmu.edu.cn,zhangdehuan@dlmu.edu.cn,teesiv@dlmu.edu.cn

《信息与电子工程前沿（英文）》 2020年 第21卷 第12期   页码 1671-1814 doi: 10.1631/FITEE.2000190

摘要： In underwater scenes, the quality of the video and image acquired by the underwater imaging system suffers from severe degradation, influencing target detection and recognition. Thus, restoring real scenes from blurred videos and images is of great significance. Owing to the light absorption and scattering by suspended particles, the images acquired often have poor visibility, including color shift, low contrast, noise, and blurring issues. This paper aims to classify and compare some of the significant technologies in , presenting a comprehensive picture of the current research landscape for researchers. First we analyze the reasons for degradation of underwater images and the underwater optical imaging model. Then we classify the technologies into three categories, including image , image , and deep learning approaches. Afterward, we present the objective and analyze the state-of-the-art approaches. Finally, we summarize the shortcomings of the defogging approaches for underwater images and propose seven research directions.
HTML PDF 收藏

State-of-the-art of intelligent minimally invasive surgical robots

Masakatsu G. Fujie, Bo Zhang

《医学前沿（英文）》 2020年 第14卷 第4期   页码 404-416 doi: 10.1007/s11684-020-0743-3

摘要： A number of developed countries are rapidly turning into super-aged societies. Consequently, the demand for reduced surgical invasiveness and enhanced efficiency in the medical field has increased due to the need to reduce the physical burden on older patients and shorten their recovery period. Intelligent surgical robot systems offer high precision, high safety, and reduced invasiveness. This paper presents a review of current intelligent surgical robot systems. The history of robots and three types of intelligent surgical robots are discussed. The problems with current surgical robot systems are then analyzed. Several aspects that should be considered in designing new surgical systems are discussed in detail. The paper ends with a summary of the work and a discussion of future prospects for surgical robot development.

关键词： robot history     medical robot     surgical robot     radiofrequency ablation     organ model    

HTML PDF 收藏

State-of-the-art progress in overall water splitting of carbon nitride based photocatalysts

Bing LUO, Yuxin ZHAO, Dengwei JING

《能源前沿（英文）》 2021年 第15卷 第1期   页码 600-620 doi: 10.1007/s11708-021-0737-0

摘要： Converting solar energy into hydrogen (H ) by photocatalytic water splitting is a promising approach to simultaneously address the increasing energy demand and environmental issues. Half decade has passed since the discovery of photo-induced water splitting phenomenon on TiO photoanode, while the solar to H efficiency is still around 1%, far below the least industrial requirement. Therefore, developing efficient photocatalyst with a high energy conversion efficiency is still one of the main tasks to be overcome. Graphitic carbon nitride (g-C N ) is just such an emerging and potential semiconductor. Therefore, in this review, the state-of-the-art advances in g-C N based photocatalysts for overall water splitting were summarized in three sections according to the strategies used, and future challenges and new directions were discussed.

关键词： photocatalysis     overall water splitting     carbon nitride     hydrogen    

HTML PDF 收藏

State-of-the-art on resistance of bearing-type bolted connections in high strength steel

Guoqiang LI, Yifan LYU, Yanbo WANG

《结构与土木工程前沿（英文）》 2020年 第14卷 第3期   页码 569-585 doi: 10.1007/s11709-020-0607-6

摘要： With the recent development of material science, high strength steel (HSS) has become a practical solution for landmark buildings and major projects. The current codes for design of bearing-type bolted connections of steel constructions were established based on the research of conventional steels. Since the mechanical properties of HSS are different from those of conventional steels, more works should be done to develop the appropriate approach for the design of bearing-type bolted connections in HSS. A review of the research carried out on bearing-type bolted connections fabricated from conventional steel and HSS is presented. The up-to-date tests conducted at Tongji University on four connection types fabricated from three grades of HSS with nominal yield strengths of 550, 690, and 890 MPa are presented. The previous research on failure modes, bearing resistance and the design with consideration of bolt hole elongation are summarized. It is found that the behavior of bolted connections in HSS have no drastic difference compared to that of conventional steel connections. Although the ductility is reduced, plastic deformation capacity of HSS is sufficient to ensure the load redistribution between different bolts with normal construction tolerances. It is also found that behavior of each bolt of multi-bolt connections arranged in perpendicular to load direction is almost identical to that of a single-bolt connection with the same end distance. For connections with bolts arranged in parallel to load direction, the deformation capacity of the whole connection depends on the minimum value between the end distance and the spacing distances in load direction. The comparison with existing design codes shows that Eurocode3 and Chinese GB50017-2017 are conservative for the design of bolted connections in HSS while AISC 360-16 may overestimate the bearing resistance of bolted connections.

关键词： High strength steel     bolted connection     bearing behavior     design codes    

HTML PDF 收藏

桥岛隧组合跨海通道的最新建设技术

葛耀君, 袁勇

《工程（英文）》 2019年 第5卷 第1期   页码 15-21 doi: 10.1016/j.eng.2019.01.003

关键词： 工程成就    

HTML PDF 收藏

现代高纯水

闻瑞梅

《中国工程科学》 2000年 第2卷 第1期   页码 68-72

摘要：

论述了超大规模集成电路与高纯水的关系以及对水质的要求；研究了高纯水制备的几个关键新技术及提高高纯水质量的方法，该方法能有效地降低高纯水中的总有机碳、细菌、细菌内毒素、溶解氧等；讨论了高纯水常用各种管材的污染，并列举了大量数据和应用实例。

关键词： 高纯水     超大规模集成电路     总有机碳     细菌     溶解氧    

HTML PDF 收藏

标题 作者 时间 类型 操作

Challenges of high dam construction to computational mechanics

ZHANG Chuhan

期刊论文

State-of-the-art of long-span bridge engineering in China

XIANG Haifan, GE Yaojun

期刊论文

A state-of-the-art review of solar passive building system for heating or cooling purpose

Arun Kumar NANDA,C K PANIGRAHI

期刊论文

A state-of-the-art review on interfacial behavior between asphalt binder and mineral aggregate

Meng GUO, Yiqiu TAN, Linbing WANG, Yue HOU

期刊论文

Hot-dip galvanizing of cold-formed steel hollow sections: a state-of-the-art review

Min SUN, Jeffrey A. PACKER

期刊论文

State-of-the-art on theories and applications of cable-driven parallel robots

期刊论文

A survey of photon mapping state-of-the-art research and future challenges

Chun-meng KANG,Lu WAN,Yan-ning XU,Xiang-xu MENG

期刊论文

State-of-the-art applications of machine learning in the life cycle of solid waste management

期刊论文

Dynamic material performance of cold-formed steel hollow sections: a state-of-the-art review

Cameron B. RITCHIE, Jeffrey A. PACKER, Xiao-Ling ZHAO, Amin HEIDARPOUR, Yiyi CHEN

期刊论文

Classical and state-of-the-art approaches for underwater image defogging: a comprehensive survey

Jing-chun Zhou, De-huan Zhang, Wei-shi Zhang,zhoujingchun@dlmu.edu.cn,zhangdehuan@dlmu.edu.cn,teesiv@dlmu.edu.cn

期刊论文

State-of-the-art of intelligent minimally invasive surgical robots

Masakatsu G. Fujie, Bo Zhang

期刊论文

State-of-the-art progress in overall water splitting of carbon nitride based photocatalysts

Bing LUO, Yuxin ZHAO, Dengwei JING

期刊论文

State-of-the-art on resistance of bearing-type bolted connections in high strength steel

Guoqiang LI, Yifan LYU, Yanbo WANG

期刊论文

桥岛隧组合跨海通道的最新建设技术

葛耀君, 袁勇

期刊论文

现代高纯水

闻瑞梅

期刊论文