Search | Engineering

订阅投稿

首页工程期刊工程焦点工程成就工程前沿关于我们 English

资源类型

期刊论文 783

会议视频 43

会议专题 1

年份

2024 2

2023 51

2022 77

2021 55

2020 49

2019 49

2018 45

2017 50

2016 36

2015 74

2014 33

2013 51

2012 33

2011 30

2010 42

2009 31

2008 17

2007 22

2006 11

2005 11

展开︾

关键词

能源 16

制造强国 8

汽车强国 5

电力系统 5

2023全球十大工程成就 4

DX桩 4

信息技术 4

制造业 4

智能制造 4

模型试验 3

海上风电 3

2021全球十大工程成就 2

Z箍缩 2

三峡工程 2

中长期 2

制造大国 2

功率谱密度 2

发展趋势 2

可再生能源 2

展开︾

检索范围：

排序：展示方式：

Experimental investigation of fatigue behavior of spur gear in altered tooth-sum gearing

H. K. SACHIDANANDA, Joseph GONSALVIS, H. R. PRAKASH

《机械工程前沿（英文）》 2012年第7卷第3期页码 268-278 doi: 10.1007/s11465-012-0331-6

摘要：

This paper deals with the contact stress, power loss, and pitting of spur gear tooth in altered tooth-sum gearing for a tooth-sum of 100 teeth when altered by±4% tooth-sum. Analytical and experimental methods were performed to investigate and compare the altered tooth-sum gearing against the standard tooth-sum gearing. The experiments were performed using a power recirculating type test rig. The tooth loads for the experimental investigations were determined considering the surface durability of gears. A clear picture of the surface damage was obtained using a scanning electron microphotograph. The negative alteration in the tooth-sum performed better than the positive alteration in a tooth-sum operating between specified center distances.

关键词： spur gear power recirculating test rig altered tooth-sum gearing scanning electron microscopy (SEM)

HTML PDF 收藏

我国海洋钻机设备发展路径研究

刘健

《中国工程科学》 2020年第22卷第6期页码 40-48 doi: 10.15302/J-SSCAE-2020.06.006

摘要：

我国海洋钻机设备的发展已取得一定成就，浅水海洋钻机基本实现了国内自主研制，但深水钻机设备与国外先进水平相比仍有较大差距，未能全面满足我国深水油田开发的需求。本文从浅水钻机、深水钻机和新型海洋钻机三方面分析了国内外海洋钻机设备的发展现状，总结了我国深水钻机设备技术水平发展情况、与国外先进水平的差距，研判了深水钻机设备国产化亟需突破的关键技术并提出了针对性建议。在进行国内外深水钻机关键技术对比分析的基础上，研究指出我国开展海洋钻机装备攻关应从深水钻机研制的设计、材料、工艺、检测、海上试验等方面突破。为明晰海洋钻机设备的发展路径，研究建议：建立和完善海洋钻机设备的标准规范，分类型、分阶段、分层次实施深水钻机设备的研制，建立集成测试和海上试验基地，加强行业间合作，以创新驱动多样化、系列化、自动化、智能化发展。

关键词：海洋钻机深水钻机设备研制检测海上试验

HTML PDF 收藏

Mixed mode properties of CNT reinforced composites using Arcan test rig

Jacob MUTHU

《结构与土木工程前沿（英文）》 2015年第9卷第4期页码 397-404 doi: 10.1007/s11709-015-0321-y

摘要： Composite materials reinforced with carbon nanotubes were mechanical tested using Arcan test rig under Mode-I, Mode-II and mixed mode loading conditions to obtain their fracture properties. The butterfly composite specimens were fabricated with 0.02, 0.05 and 0.1 wt % CNTs. The polyester/CNT composite was fabricated using VRTM (Vacuum Resin Transfer Molding) where the CNTs were first functionalised to reach an optimum properties. Arcan test rig was designed and fabricated to work with the Shimadzu testing machine. The results show that the functionalised CNTs have improved the fracture behavior by acting as bridge between the cracked face. In addition, the fracture properties were not improved for the higher weight fraction of 0.1 wt% CNTs.

关键词： CNT composites Arcan test rig stress intensity factor

HTML PDF 收藏

基于ANSYS的汽车变速器检测试验台架有限元分析

刘鹏浩,付胜,朱晓民

《中国工程科学》 2014年第16卷第8期页码 74-78

摘要：

本文运用Solidworks 软件对汽车变速器检测试验台架进行了三维建模，通过ANSYS软件进行瞬态分析和模态分析，得到了汽车变速器检测试验台架的应力云图，识别出试验台架结构的模态参数，得出台架的固有频率和振型特征。为进一步研究汽车变速器检测试验台振动、疲劳和噪声等奠定了基础，也为汽车变速器检测试验台架结构的优化设计提供了参考依据。

关键词：变速器检测试验台 ANSYS 有限元分析瞬态分析模态分析

HTML PDF 收藏

Dynamic analysis of a rig shafting vibration based on finite element

Van Thanh NGO, Danmei XIE, Yangheng XIONG, Hengliang ZHANG, Yi YANG

《机械工程前沿（英文）》 2013年第8卷第3期页码 244-251 doi: 10.1007/s11465-013-0264-8

摘要：

In recently, finite elements method (FEM) has been used most popular for analysis of stress, vibration, heat flow and many other phenomena. Taking a rig shafting as an example, this paper studies the lateral vibration of the rig shafting with multi-degree-of-freedom by using FEM. The FEM model is created and the eigenvalues and eigenvectors are calculated and analyzed to find natural frequencies, critical speeds, mode shapes and unbalance responses. Then critical and mode shapes are determined. Finally, responses of unbalance force are analyzed in case of undamped and damped system, and peaks of response are compared.

关键词： Finite element method (FEM) lateral vibration rig shafting rotor-bearing system dynamic characteristics

HTML PDF 收藏

旋挖钻机施工钻孔灌注桩的工艺研究

李林,闵峰

《中国工程科学》 2010年第12卷第4期页码 33-36

摘要：

泰州大桥夹江左汊桥主跨采用87.5 m+3×125 m+87.5 m的五跨连续梁桥，水中主墩基础采用-2.0 m桩径的钻孔灌注桩,最大设计桩长为94 m，采用旋挖钻机施工。文章结合泰州大桥的施工实例，阐述了旋挖钻机成孔的工艺原理，按照工艺流程，重点叙述了泥浆配置、安装钻孔、钻机钻进等工艺，并重点总结了旋挖钻机施工钻孔桩的施工特点，为今后类似工程施工提供了借鉴。

关键词：旋挖钻机施工钻孔灌注桩工艺特点

HTML PDF 收藏

构建设施型精准化循环水养殖系统的技术研究

牛化欣,常杰,雷霁霖,贾玉东

《中国工程科学》 2014年第16卷第9期页码 106-112

摘要：

鉴于当前水资源短缺、环境恶化、水产养殖业高速发展，以及保障食品安全等问题的不断呈现，促使资源型工厂化流水养殖模式急需向高效型循环水养殖方向转变，这是产业发展提升的必然趋势。本文以工业化养殖理念为指导、节能减排为目标，以鲆鲽类产业技术体系构建的循环水养殖模式为样板，按循环水养殖系统（RAS）的设计原理，优化养殖工艺流程，构建一种设施型精准化的RAS，并初步分析探讨了海水鱼类在此集成系统中的应用效果。该系统将为广大水产养殖企业提供一种建设成本低廉、系统运行稳定可控、容易管理的实用新型养殖模式，也可为下一步发展现代水产精准养殖工程体系提供理论和实践依据。

关键词：设施型工业化精准农业循环水养殖系统

HTML PDF 收藏

国内外工厂化循环水养殖模式水质处理研究进展

王峰,雷霁霖,高淳仁,黄滨,翟介明

《中国工程科学》 2013年第15卷第10期页码 16-23

摘要：

本文以循环水养殖模式工艺流程为主线，结合近年养殖模式科学研究和国内循环水养殖产业发展现状，围绕水质处理和应用，分别对系统中的大颗粒物滤除、臭氧消毒、气浮综合处理、生物滤池、紫外线杀菌、pH值调节等水质处理环节进行了综合分析和探讨，为今后创建适合中国国情的高端循环水养殖模式、推进循环水处理技术的精准化和实用化提供参考。

关键词：循环水养殖养殖模式水处理工艺

HTML PDF 收藏

Experimental investigation of a novel micro gas turbine with flexible switching function for distributed power

Xiaojing LV, Weilun ZENG, Xiaoyi DING, Yiwu WENG, Shilie WENG

《能源前沿（英文）》 2020年第14卷第4期页码 790-800 doi: 10.1007/s11708-020-0691-2

摘要： Micro gas turbine (MGT) is widely used in small-scale distributed power systems because of its low emissions and fuel flexibility. However, the under-utilization of its exhaust heat and the low electric efficiency are the main bottlenecks that restrict its application. Additionally, the flexible switching between the power generated by the MGT and the power grid is also a key factor for keeping the secure operation of a distributed power station. Therefore, this paper conducted some experimental investigations of a 30 kW MGT to provide reference solutions for the above issues. This MGT is located at Shanghai Jiao Tong University (SJTU), which is designed by the Gas Turbine Research Institute of SJTU, and is manufactured by a turbo-machinery factory in Chongqing, China. The demonstration prototype is mainly composed of a single stage centrifugal compressor, a radial turbine, a combustor, a high-speed permanent magnet generator, and a control system. The results show that the MGT can achieve steady operation at a low rotational speed from 10000 r/min to 34000 r/min in the case of using oil lubricated bearings, which can greatly reduce the economic cost compared with the use of air bearings. At the same time, the ignition success rate of combustion chamber (CC) reaches 98% at a low rotational speed, and a wide range of stable combustion area can be obtained, because of the novel design method of combustor by referencing the way applied in an axial flow aero-engine. The MGT generating set can achieve functions, such as starting up, ignition, stable operation, loaded operation, grid-connection and stopping. This system also can realize flexibly switching from the start motor mode to the generator mode, and from grid-connected mode to off-grid mode, because the innovative multi-state switching control system is adopted. The above research work can make our state master independent intellectual property rights of micro gas turbine, rather than continue to be subject to the technological monopoly of the developed states, which can provide theoretical and experimental support for the industrialization of MGT in China.

关键词： gas turbine flexible switching system control system distributed power system emission test

HTML PDF 收藏

半滑舌鳎工厂化循环水养殖模式能值评价

王峰,雷霁霖

《中国工程科学》 2015年第17卷第1期页码 4-10

摘要：

为了更好地评价半滑舌鳎（Cynoglossus semilaevis Günther）在工厂化循化水养殖模式下的养殖效果及环境可持续性，运用能值理论及分析方法构建了半滑舌鳎循环水养殖模式能值流程图，并对此养殖模式各能值分布进行分析。结果表明：循环水养殖模式环境能值投入只占比1.08 %，能值产出率（EYR）为2.433，环境负载率（ELR）为0.313 4，能值可持续发展指标（ESI）为7.763，表明此种养殖模式已经将农业生产提升至工业化水平，其经济系统发展程度高，生产效率较高；同时该养殖模式极大地减轻了对环境的压力，其可持续性和环境容纳量均较高。

关键词：半滑舌鳎循环水养殖养殖模式环境可持续性能值

HTML PDF 收藏

墙角火灾环境下钢构件温度分布及响应行为的实验研究

陈长坤,姚斌,杨昀,蔡昕,张和平,万玉田

《中国工程科学》 2005年第7卷第9期页码 70-75

摘要：

利用ISO9705标准火灾实验系统，模拟墙角火灾环境，以薄壁方管钢梁为研究对象，对钢构件在热、力耦合作用下的行为进行实验研究。对火灾的热释放速率与室内温度场，钢构件及其表面气体的温度、构件在火灾作用下的挠度进行测量，分析真实火灾下钢构件温升及温度分布的特点与火灾发展对构件挠度的影响。研究结果表明钢构件在长向上存在着很大的温差，而构件的挠度变化也并不对称，这说明以往研究中往往假设钢构件在长向上温度一致并不恰当，这种非均匀温度场对构件的行为有着重要影响，它使得构件高温区部分更易发生局部屈服而失效，在相同规模的火灾环境下，与均匀温度场相比，这种墙角火灾所导致的非均匀温度场更不利于钢构件的安全。

关键词： ISO标准火灾实验系统钢构件墙角火温度分布

HTML PDF 收藏

工厂化循环水养殖模式放养密度对半滑舌鳎成鱼生长和肌肉营养成分的影响

王峰,雷霁霖

《中国工程科学》 2015年第17卷第1期页码 19-26

摘要：

为半滑舌鳎（Cynoglossus semilaevis Günther）的集约化养成提供基础数据，在工厂化循环水养殖模式下，以处于快速生长期的大规格鱼种（0.64±0.063） kg为研究对象，设置4个密度梯度组，检测半滑舌鳎的生长及肉质相关指标，结果表明：a. 实验共进行7个月，半滑舌鳎在循环水养殖模式下的总成活率为88.01 %～93.34 %，总增重率为139.69 %～191.09 %，且随着养殖密度降低，其成活率呈下降趋势，生长速度、肥满度呈上升趋势，半滑舌鳎生长激素分泌浓度为2.522～2.862 4 μg/L，各养殖密度组的生长激素随养殖密度下降前期呈升高趋势，后期呈下降趋势；b. 各养殖密度组水分、灰分、粗蛋白、粗脂肪、氨基酸和脂肪酸含量随养殖密度变化均没有规律性变化；c. 本实验条件下，循环水养殖模式X2组即初始放养210条的处理组取得了最佳的养殖效果，月平均成活率为98.72 %，月增重为0.152 6 kg/条，经7个月的养殖，可达到23.03 kg/m3的单位产量。本实验说明半滑舌鳎在循环水养殖模式下具有很好的适应性，其生长及营养成分均处于较好的状态，同时也说明循环水养殖模式可以极大地发掘半滑舌鳎的养殖潜力，是适合半滑舌鳎集约化养殖的一种具有优势的养殖模式。

关键词：半滑舌鳎；循环水养殖；放养密度；生长；营养成分

HTML PDF 收藏

浙江三门核电站岩石动力学特性参数的试验与分析

李愿军

《中国工程科学》 2010年第12卷第2期页码 27-31

摘要：

分析了地震荷载下的岩石动力学特性和试验研究方法，采用RDT-10000型岩石高压三轴仪进行了岩石动力学试验，给出了浙江三门核电站推荐厂址凝灰岩、凝灰质砂岩、霏细斑岩、流纹斑岩的动态弹性模量、泊松比、剪切模量和轴向动载的三轴抗压强度值。这些参数已经应用于可行性研究报告和抗震设计中。

关键词：核岛岩石动力学试验

HTML PDF 收藏

Real drive cycles analysis by ordered power methodology applied to fuel consumption, CO

Pol Masclans Abelló, Vicente Medina Iglesias, M. Antonia de los Santos López, Jesús Álvarez-Flórez

《环境科学与工程前沿（英文）》 2021年第15卷第1期 doi: 10.1007/s11783-020-1296-z

摘要： Abstract • New method named CAbOP is presented based on ordering data according to power. • Three emission models are used and their emission results compared. • Emissions data are analyzed in real driving cycles under CAbOP criteria. • Methodology to collect data and reconstruct lost data in real urban driving cycles. In this work three fuel consumption and exhaust emission models, ADVISOR, VT-MICRO and the European Environmental Agency Emission factors, have been used to obtain fuel consumption (FC) and exhaust emissions. These models have been used at micro-scale, using the two signal treatment methods presented. The manuscript presents: 1) a methodology to collect data in real urban driving cycles, 2) an estimation of FC and tailpipe emissions using some available models in literature, and 3) a novel analysis of the results based on delivered wheel power. The results include Fuel Consumption (FC), CO2, NOx and PM10 emissions, which are derived from the three simulators. In the first part of the paper we present a new procedure for incomplete drive cycle data treatment, which is necessary for real drive cycle acquisition in high density cities. Then the models are used to obtain second by second FC and exhaust emissions. Finally, a new methodology named Cycle Analysis by Ordered Power (CAbOP) is presented and used to compare the results. This method consists in the re-ordering of time dependant data, considering the wheel mechanical power domain instead of the standard time domain. This new strategy allows the 5 situations in drive cycles to be clearly visualized: hard breaking zone, slowdowns, idle or stop zone, sustained speed zone and acceleration zone. The complete methodology is applied in two real drive cycles surveyed in Barcelona (Spain) and the results are compared with a standardized WLTC urban cycle.

关键词： Cycle Analysis by Ordered Power (CAbOP) Micro and macro models Real drive cycle NO_x/PM₁₀/CO₂ emissions Wheel mechanical power domain Worldwide Harmonized Light-Duty Vehicles Test Cycle (WLTC)

HTML PDF 收藏

Development of an experimental platform for research in energy and electrical machine control

Ali HMIDET, Rachid DHIFAOUI, Driss SAIDANI, Othman HASNAOUI,

《能源前沿（英文）》 2010年第4卷第3期页码 366-375 doi: 10.1007/s11708-010-0106-x

摘要： This paper presents the development of a test bench dedicated for electrical machines and energy control, as realized by the research team of the Power Systems and Electrical Machines Laboratory (RME) of the National Institute of Applied Sciences and Technology (INSAT) in Tunisia. The principal components of the proposed test bench are explained, and the respective characteristics are given. This paper focuses on mounting low-cost sensors and developing reliable scientific results. The relevant obtained results in photovoltaic (PV) and wind energy fields, power measurement and control, as well as alternating current (AC) machine drives are likewise presented. These are supported by two signal processing controller boards based on Technosoft MCK240 and dSPACE DS1104 kits. In the wind energy field, some results relative to Self Excited Induction Generator dedicated to supplying isolated sites are discussed; in addition, water pumping is discussed for PV energy. In the AC drives area, the results of a closed loop control are presented using a developed direct voltage control (DVC) scheme implemented on dSPACE DS1104. Maps and interesting details of some realized sensors are also presented.

关键词： test bench induction motor solar energy wind energy AC/DC/AC converter sensors and power measurements