检索结果-内蒙古大学图书馆

Lubrication characteristics analysis of an air-oil lubrication system using an experimental design method

INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING 2013年第2期14卷 289-297页

作者： Moon, Jae-Heum Lee, Hyeong-Dae Kim, Seok-Il Korea Aerosp Univ Grad Sch Goyang Si 412791 Gyeonggi Do South Korea Korea Aerosp Univ Sch Aerosp & Mech Engn Goyang Si 412791 Gyeonggi Do South Korea

Air-oil lubrication has been widely used for high-speed spindle bearings because its oil delivery is positive and can be controlled very accurately. In this study, the effects of air-oil lubrication conditions, such as the oil discharge quantity, oil discharge interval, oil viscosity, air supply rate and tube length, were analyzed with respect to the variation of the oil supply rate. The analysis was carried out by using an air-oil lubrication characteristics evaluation system which was consisted of an air-oil lubrication unit, oil absorbent paper feeding unit and image processing unit. The variation of the oil supply rate discharged from the air-oil lubrication unit was gauged as the variation ratio of the oil band width on the oil absorbent paper measured by the image processing unit. A prediction model for the variation ratio of the oil band width was established based on a response surface method, and its reliability was proved by the fact that the predicted variation ratios of the oil band width agreed well with the measured variation ratios under the various air-oil lubrication conditions. In particular, the relationships between the variation of the oil band width and the air-oil lubrication conditions were examined by analyzing the interactions between the experimental factors.

关键词： Air-oil lubrication Lubrication characteristics analysis High-speed spindle bearing experimental design method

来源：评论

学校读者我要写书评

暂无评论

Modeling and optimizing of factors affecting erosion-corrosion of AA6063-(TiC/Al₂O₃) hybrid composites by experimental design method

引用

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 2008年第1-2期486卷 313-320页

作者： Aziz, A. Abdel Mahmoud, T. S. Aal, A. Abdel CMRDI Surface Protect & Corros Control Lab Cairo 11421 Egypt

In this article, modeling and optimizing of factors affecting erosion-corrosion wear of aluminum alloy A6063 reinforced with (Al2O3/TiC) particles have been determined by experimental design method. The erosion-corrosion wear characteristics and mechanism of AA6063-(TiC/Al2O3) with experimental parameters namely;type and concentration of corrosive media in the slurry, erosion speed and time have been investigated. Two models for reinforced and unreinforced alloys were applied to describe the influences of these factors on the erosion behavior of alloys. The erosion-corrosion mechanisms of the AA6063-(TiC/Al2O3) were dominated by particles erosion wear in alkaline slurry, and by the interaction of particle erosion wear and medium corrosion in acidic slurry. The results of experimental work are coinciding with that of calculated ones confirming the successful modelization. (c) 2007 Elsevier B.V. All rights reserved.

关键词： modeling wear composite materials corrosion experimental design method

来源：评论

学校读者我要写书评

暂无评论

Synthesis and characterization of alkyl methacrylate-based microgels by experimental design method

引用

BULLETIN OF THE KOREAN CHEMICAL SOCIETY 2007年第9期28卷 1493-1498页

作者： Lee, Young Keun Jin, Fan-Long Park, Soo-Jin Soonchunhyang Univ RIC Nat Cosmet & Perfumery Inst Ind Acad Cooperat Fdn Asan 336745 Chungnam South Korea Jilin Inst Chem Technol Sch Chem & Mat Engn Dept Mat Engn Jilin 132022 Peoples R China Inha Univ Dept Chem Inchon 402751 South Korea

In this work, alkyl methacrylate-based microgels were synthesized by an experimental design method, and their sebum absorption characteristics were investigated. The results of fractional factorial experimentation indicated that the cross-linking agent content, solvent content, and stirring speed were the main parameters in the synthesis of the microgels. The suitable synthesis conditions were determined by the response surface design method. Through a study of the monomer and solvent effects, it was confirmed that the microgel shows the highest sebum absorption ratio when t-butyl methacrylate is used as a monomer or when acetone is used as a solvent. The optimal microgel synthesis conditions for cosmetic application were determined, and the resulting microgel had a mean particle size of 4.7 mu m and a sebum absorption ratio of 435%.

关键词： microgels synthesis alkyl methacrylate sebum absorption ratio experimental design method

来源：评论

学校读者我要写书评

暂无评论

Modeling of Cracked Beams by the experimental design method

引用

LATIN AMERICAN JOURNAL OF SOLIDS AND STRUCTURES 2015年第9期12卷 1641-1652页

作者： Serier, M. Benamara, N. Megueni, A. Refassi, K. Univ Djillali Liabes Sidi Bel Abbes Fac Technolgy Mech Struct & Solids Lab Bel Abbes 22000 Algeria

The understanding of phenomena, no matter their nature is based on the experimental results found. In the most cases, this requires an important number of tests in order to put a reliable and useful observation served into solving the technical problems subsequently. This paper is based on independent and variables combination resulting from experimentation in a mathematical formulation. Indeed, mathematical modeling gives us the advantage to optimize and predict the right choices without passing each case by the experiment. In this work we plan to apply the experimental design method on the experimental results found by Deokar, A (2011), concerning the effect of the size and position of a crack on the measured frequency of a beam console, and validating the mathematical model to predict other frequencies.

关键词： Parameters experimental design method modeling frequency crack

来源：评论

学校读者我要写书评

暂无评论

Optimum design of a Switched Reluctance Motor Fed by Asymmetric Bridge Converter Using experimental design method

引用

IEEE TRANSACTIONS ON MAGNETICS 2014年第2期50卷 781-784页

作者： Ishikawa, Takeo Hashimoto, Yoshinori Kurita, Nobuyuki Gunma Univ Div Elect & Informat Kiryu Gunma 3768515 Japan

A switched reluctance motor (SRM) can be one of substitutes for interior permanent magnet synchronous motors used in many industrial applications because of their merits. This paper proposes an optimization method for an SRM fed by an asymmetric bridge converter. The converter is coupled with 2-D finite element method. We optimize five geometries of SRM shape and turnon and turnoff angles of the asymmetric bridge converter by using the experimental design method. The optimized SRM produces a larger torque than that of an initial motor in low speed range.

关键词： Asymmetric bridge converter coupled problem experimental design method optimization switched reluctance motor

来源：评论

学校读者我要写书评

暂无评论

Optimization techniques derived from experimental design method and their application to the design of a brushless direct current motor

引用

IEEE TRANSACTIONS ON MAGNETICS 2001年第5期37卷 3622-3626页

作者： Vivier, S Gillon, F Brochet, P Ecole Cent Lille L2EP F-59651 Villeneuve Dascq France

Efficient methods to optimize electrical machines are derived from the design of Experiments method and applied to the shape optimization of a permanent magnet motor. Different experimental designs are used to build a simple model and to find the optimal response. A fully user-controlled approach and iterative algorithms are compared.

关键词： experimental design method optimization methods permanent magnet machines response surface methodology (RSM)

来源：评论

学校读者我要写书评

暂无评论

design of a DC Motor Made of Soft Magnetic Composite Core by the experimental design method

引用

IEEE TRANSACTIONS ON MAGNETICS 2012年第11期48卷 3132-3135页

作者： Ishikawa, Takeo Sato, Shigeyoshi Takeguchi, Syunsuke Matsuo, Akira Gunma Univ Kiryu Gunma 3768515 Japan

This paper manufactures a prototype of DC motor made of soft magnetic composite (SMC) core, and compares the motor efficiency with that of a motor made of the laminated core. Next, this paper develops a method for DC motor simulation, where the 2-D FEM is directly coupled with brush and commutator circuit. Finally, in order to improve the motor efficiency, eight geometry design parameters are optimized by using the experimental design method. The highest efficiency of the optimized motor is improved from 53.7% to 68.9%, that is, the improvement of 15.2%.

关键词： DC motor experimental design method finite element analysis soft magnetic composite core

来源：评论

学校读者我要写书评

暂无评论

Optimization techniques derived from experimental design method and their application to the design of a brushless direct current motor

Optimization techniques derived from experimental design met...

引用

9th Biennial IEEE Conference on Electromagnetic Field Computation (CEFC)

作者： Vivier, S Gillon, F Brochet, P Ecole Cent Lille L2EP F-59651 Villeneuve Dascq France

关键词： experimental design method optimization methods permanent magnet machines response surface methodology (RSM)

来源：评论

学校读者我要写书评

暂无评论

A calibration method of discrete element contact model parameters for bulk materials based on experimental design method

引用

POWDER TECHNOLOGY 2023年第1期425卷

作者： Bu, Peng Li, Yanlong Zhang, Xin Wen, Lifeng Qiu, Wen Xian Univ Technol State Key Lab Ecohydraul Northwest Arid Reg Xian 710048 Shannxi Peoples R China Hanjiang to Weihe River Valley Water Divers Projec Xian 710100 Shaanxi Peoples R China

This study proposes a method to address the issues of large amount of calculation and low efficiency in the calibration of discrete element method (DEM) contact model parameters for rockfill, which is based on the experimental design method. Plackett-Burman design method was used to analyze the significance of each contact model parameter to the macro-mechanical parameters. Second-order response surface regression models were developed to analyze the relationship between macro-mechanical parameters and contact model param-eters that have significant impact on them. The contact model parameters in the rockfill DEM were calibrated using a multi-objective optimization method based on laboratory triaxial tests. The calibrated parameters were then used to simulate discrete element triaxial tests of the rockfill under varying pressure conditions. The study demonstrates that calibrated parameters can accurately predict the macroscopic behavior of rockfill under different confining pressures. Additionally, the calibration method has good applicability and effectiveness.

关键词： Rockfill experimental design method Discrete element method Parameter calibration Triaxial test Multi -objective optimization

来源：评论

学校读者我要写书评

暂无评论

An optimal design of the internal space in a micro-speaker module

引用

INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING 2015年第6期16卷 1141-1147页

作者： Kim, Dong-Cheol Jeong, Hyun-Yong Sogang Univ Sch Mech Engn Seoul 121742 South Korea

The development of display and battery technologies has led to the miniaturization of smart devices. However, the acoustic performance of micro speakers using less than 1-2 cm(3) of space has been limited. Internal space management for modules with limited internal volumes is a critical factor in the acoustic performance of mobile devices. Previous studies have mostly focused on improving the performance of a micro speaker itself. This study has sought to identify the characteristics of resonant space by performing an anechoic chamber experiment using the Taguchi method and by using the finite element analysis of a micro-speaker module. As a result, an optimum internal space was designed based on the effects of the structural characteristics of the interior of the microspeaker module on the acoustic performance. In particular, focus was placed on the rise in sound pressure at low frequencies and on the flatness of the sound pressure at high frequencies related to the size and shape of the internal space.

关键词： experimental design method Finite element analysis Micro speaker Resonant space Sound experiment

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：