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Ke WEI, Xiaoguang FAN, Mei ZHAN, Miao MENG
《机械工程前沿(英文)》 2018年 第13卷 第3期 页码 376-384 doi: 10.1007/s11465-018-0500-3
Billet optimization can greatly improve the forming quality of the transitional region in the isothermal local loading forming (ILLF) of large-scale Ti-alloy rib-web components. However, the final quality of the transitional region may be deteriorated by uncontrollable factors, such as the manufacturing tolerance of the preforming billet, fluctuation of the stroke length, and friction factor. Thus, a dual-response surface method (RSM)-based robust optimization of the billet was proposed to address the uncontrollable factors in transitional region of the ILLF. Given that the die underfilling and folding defect are two key factors that influence the forming quality of the transitional region, minimizing the mean and standard deviation of the die underfilling rate and avoiding folding defect were defined as the objective function and constraint condition in robust optimization. Then, the cross array design was constructed, a dual-RSM model was established for the mean and standard deviation of the die underfilling rate by considering the size parameters of the billet and uncontrollable factors. Subsequently, an optimum solution was derived to achieve the robust optimization of the billet. A case study on robust optimization was conducted. Good results were attained for improving the die filling and avoiding folding defect, suggesting that the robust optimization of the billet in the transitional region of the ILLF was efficient and reliable.
关键词: isothermal local loading forming rib-web component transitional region robust optimization dual response surface method
An exploratory study for predicting component reliability with new load conditions
Zhengwei HU, Xiaoping DU
《机械工程前沿(英文)》 2019年 第14卷 第1期 页码 76-84 doi: 10.1007/s11465-018-0522-x
关键词: reliability component failure mode prediction random variable
Forecast method for used number of parts and components based on complex network
LIU Fu-yun, QI Guo-ning, YANG Qing-hai
《机械工程前沿(英文)》 2006年 第1卷 第4期 页码 479-484 doi: 10.1007/s11465-006-0064-5
关键词: complex network industrial component analytic expression forecast
袁 辉,王凤山,许继恒,付成群
《中国工程科学》 2013年 第15卷 第5期 页码 106-112
为有效表示坑道工程空间对象,并有效支持动荷段实体的各种拓扑操作和毁伤分析等军事应用,提出了坑道工程动荷段实体模型构件化设计解决方案和设计质量的直觉模糊判决方法。适应坑道工程动荷段实体模型构件化设计的多样性特征和有效性验证约束,确定直觉模糊的正负理想构件化设计事件,比较构件化设计事件与正负理想事件的距离,建立坑道工程动荷段实体模型构件化设计事件的优势度计算模型,进而得到构件化设计事件集合的序列。案例表明,方法有效解决了坑道工程动荷段实体模型构件化设计质量判决问题,为科学的坑道工程动荷段实体模型设计实践提供了一种理论和方法。
郑东晖,后华,翟明普,渠美
《中国工程科学》 2020年 第22卷 第1期 页码 120-126 doi: 10.15302/J-SSCAE-2020.01.013
林业产业作为国民经济的重要基础性产业,在生态建设中的地位日益突出。本文系统梳理了秦巴山脉区域的林业产业发展现状,详细开展了区域林业产业的优势、劣势、机遇和威胁(SWOT)分析,以专家问卷调查作为数据来源,运用主成分分析方法,以统计分析的方式寻找出对秦巴山脉林业产业发展有较大影响的要素,以之作为区域林业产业发展战略制定的科学依据。研究表明,生态环境问题、集约化程度低、森林旅游业发展机遇、区位优势、资源优势等方面是秦巴山脉区域林业产业发展的主要影响因素;区域林业产业发展重在于生态建设,应利用区位和资源优势,做大做强特色产业,优化产业结构;同时大力发展以森林旅游为主的第三产业,保障区域林业产业的高质量发展。
Experimental and numerical analysis of beam to column joints in steel structures
Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN
《结构与土木工程前沿(英文)》 2018年 第12卷 第4期 页码 642-661 doi: 10.1007/s11709-017-0457-z
关键词: beam to column connections experiments component method neural network model combinational modeling
Improved resilience measure for component recovery priority in power grids
《工程管理前沿(英文)》 2021年 第8卷 第4期 页码 545-556 doi: 10.1007/s42524-021-0161-5
关键词: resilience measure power grid importance measure component recovery
Modeling of semi-rigid beam-to-column steel joints under extreme loading
C FANG, B A IZZUDDIN, A Y ELGHAZOULI, D A NETHERCOT
《结构与土木工程前沿(英文)》 2013年 第7卷 第3期 页码 245-263 doi: 10.1007/s11709-013-0215-9
关键词: semi-rigid joint component method ductility elevated temperature
Molecular level simulations on multi-component systems —a morphology prediction method
C. SCHMIDT, J. ULRICH
《化学科学与工程前沿(英文)》 2013年 第7卷 第1期 页码 49-54 doi: 10.1007/s11705-013-1307-8
Isogeometric topology optimization based on energy penalization for symmetric structure
Xianda XIE, Shuting WANG, Ming YE, Zhaohui XIA, Wei ZHAO, Ning JIANG, Manman XU
《机械工程前沿(英文)》 2020年 第15卷 第1期 页码 100-122 doi: 10.1007/s11465-019-0568-4
关键词: topology optimization moving morphable component isogeometric analysis energy penalization method symmetric constraint
Development of a multi-component drug from turmeric using central composite design
Xiaohang ZHANG,Shengnan HAN,Yan LI,Jianlan JIANG
《化学科学与工程前沿(英文)》 2014年 第8卷 第3期 页码 362-368 doi: 10.1007/s11705-014-1439-5
关键词: multi-component drug development central composite design turmeric curcuminoids
Xiu-rui GENG,Lu-yan JI,Kang SUN
《信息与电子工程前沿(英文)》 2016年 第17卷 第5期 页码 403-412 doi: 10.1631/FITEE.1600028
关键词: Non-negative matrix factorization (NMF) Principal component analysis (PCA) Endmember Hyperspectral
Tao FU, Jibin ZHAO, Weijun LIU
《机械工程前沿(英文)》 2012年 第7卷 第4期 页码 445-452 doi: 10.1007/s11465-012-0338-z
This paper investigates optimization problem of the cutting parameters in high-speed milling on NAK80 mold steel. An experiment based on the technology of Taguchi is performed. The objective is to establish a correlation among spindle speed, feed per tooth and depth of cut to the three directions of cutting force in the milling process. In this study, the optimum cutting parameters are obtained by the grey relational analysis. Moreover, the principal component analysis is applied to evaluate the weights so that their relative significance can be described properly and objectively. The results of experiments show that grey relational analysis coupled with principal component analysis can effectively acquire the optimal combination of cutting parameters and the proposed approach can be a useful tool to reduce the cutting force.
关键词: high-speed milling grey relational analysis principal component analysis parameters optimization
余金山,陈志强
《中国工程科学》 2004年 第6卷 第9期 页码 81-87
国际贸易结算是银行业中一种必不可少的业务,占据着重要的地位,而且随着电子商务的发展,其重要性也越来越突出。但是,这一业务的计算机化相当困难。主要原因是:操作流程复杂;组合变化太多,对灵活性有很高要求;涉及面相当广,几乎涉及银行的每一个业务品种,是一个压缩版的银行系统。因此,开发这样的系统必须采用先进的而且较为合适的方法和技术。文章提出了以构建半成品构件系统为总体思想的开发方法;在设计和实现上,提出了以数据总线为统一接口,以菜单/功能图标为总控主体框架,以基本业务操作为基本组件,并能把基本组件包装裁剪成可在主体框架控制下运行的功能构件,这样构建的系统可按实际需要进行组装、剪裁、参数设定、重新包装或经少量改写而形成一个实际可运行的系统。并提供了与银行总系统集成的灵活接口,具备了向网上银行和分布系统发展的良好基础。
Bang-hua YANG,Liang-fei HE,Lin LIN,Qian WANG
《信息与电子工程前沿(英文)》 2015年 第16卷 第6期 页码 486-496 doi: 10.1631/FITEE.1400299
关键词: Ocular artifacts Electroencephalogram (EEG) Electrooculogram (EOG) Brain-computer interface (BCI) Spatial constraint independent component analysis based recursive least squares (SCICA-RLS)
标题 作者 时间 类型 操作
Robust optimization of the billet for isothermal local loading transitional region of a Ti-alloy rib-web componentbased on dual-response surface method
Ke WEI, Xiaoguang FAN, Mei ZHAN, Miao MENG
期刊论文
An exploratory study for predicting component reliability with new load conditions
Zhengwei HU, Xiaoping DU
期刊论文
Forecast method for used number of parts and components based on complex network
LIU Fu-yun, QI Guo-ning, YANG Qing-hai
期刊论文
Experimental and numerical analysis of beam to column joints in steel structures
Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN
期刊论文
Modeling of semi-rigid beam-to-column steel joints under extreme loading
C FANG, B A IZZUDDIN, A Y ELGHAZOULI, D A NETHERCOT
期刊论文
Molecular level simulations on multi-component systems —a morphology prediction method
C. SCHMIDT, J. ULRICH
期刊论文
Isogeometric topology optimization based on energy penalization for symmetric structure
Xianda XIE, Shuting WANG, Ming YE, Zhaohui XIA, Wei ZHAO, Ning JIANG, Manman XU
期刊论文
Development of a multi-component drug from turmeric using central composite design
Xiaohang ZHANG,Shengnan HAN,Yan LI,Jianlan JIANG
期刊论文
Non-negativematrix factorization based unmixing for principal component transformed hyperspectral data
Xiu-rui GENG,Lu-yan JI,Kang SUN
期刊论文
of cutting parameters in high-speed milling based on grey relational analysis coupled with principal component
Tao FU, Jibin ZHAO, Weijun LIU
期刊论文