期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
Basic Problems in Design and Inverse Engineering Solution for Outer Characteristic of Vehicle Suspension Shock Absorbers
1
作者 俞德孚 陈庆东 李文君 《Journal of Beijing Institute of Technology》 EI CAS 2003年第2期166-171,共6页
Based on the theory and the practical experiences of linearity design of feasible design area and inverse solution of non linear outer characteristic of suspension shock absorber, in accordance with non linearity ou... Based on the theory and the practical experiences of linearity design of feasible design area and inverse solution of non linear outer characteristic of suspension shock absorber, in accordance with non linearity outer characteristic formed by open up damping coefficient, full open damping coefficient and smoothness to safety ratio of suspension shock absorber, a method and a research conclusion of the feasible design and inverse solution for the basic problems of designing and inverse solution of non linear outer characteristic of suspension damping components are provided. 展开更多
关键词 vehicle suspension outer characteristic of shock absorber designing and inverse engineering
下载PDF
Activity and characteristics of "Oxygen-enriched" highly reactive absorbent for simultaneous flue gas desulfurization and denitrification 被引量:2
2
作者 Yi ZHAO Tianxiang GUO Zili ZANG 《Frontiers of Environmental Science & Engineering》 SCIE EI CAS CSCD 2015年第2期222-229,共8页
An "Oxygen-enriched" highly reactive absor- bent was prepared by mixing fly ash, lime and a small quantity of KMnO4 for simultaneous desulfiarization and denitrification. Removal of SO2 and NO simultaneously was car... An "Oxygen-enriched" highly reactive absor- bent was prepared by mixing fly ash, lime and a small quantity of KMnO4 for simultaneous desulfiarization and denitrification. Removal of SO2 and NO simultaneously was carried out using this absorbent in a flue gas circulating fluidized bed (CFB). The highest simultaneous removal efficiency, 94.5% of SO2 and 64.2% of NO, was achieved under the optimal experiment conditions. Scanning Electron Microscope (SEM) and Accessory X-ray Energy Spectrometer (EDX) were used to observe the surface characteristics of fly ash, lime, "Oxygen-enriched" highly reactive absorbent and the spent absorbent. An ion chromatograph (IC) and chemical analysis methods were used to determine the contents of sulfate, sulfite, nitrate and nitrite in the spent absorbents, the results showed that sulfate and nitrite were the main products for desulfurization and denitrification respectively. The mechanism of removing SO2 and NO simultaneously was proposed based on the analysis results of SEM, EDX, IC and the chemical analysis methods. 展开更多
关键词 "Oxygen-enriched" highly reactive absorbent Surface characteristics Flue gas circulating fluidized bed Simultaneous desulfurization and denitrification
原文传递
Sound absorption characteristics of microperforated absorbers for random incidence 被引量:2
3
作者 MAA Dab-You LIU Ke (Institute of Acoustics, Academia Sinica Beijing 100080) 《Chinese Journal of Acoustics》 2000年第4期289-298,共10页
Based on previous work on 'Statistical absorption coefficient of microperforated absorbers', in which it was shown that theoretical results agree well with experiments on the absorption characteristics of micr... Based on previous work on 'Statistical absorption coefficient of microperforated absorbers', in which it was shown that theoretical results agree well with experiments on the absorption characteristics of microperforated absorbers (MPA) for random incidence. Further work was carried out in this investigation of the statistical absorption coefficients of MPA in random fields by computation, in order to find the best. structure of MPA. It is established that ordinarily the absorption curves of MPA for random incidence and that for normal incidence are quite alike, only that the absorption coefficients are more or less reduced and the whole curve is shifted to higher frequencies without any change of shape. But when the perforate constant k = d ωρ0/4η where d is the diameters of perforations in mm and f0, the absorbers resonance frequency is reduced below 2, say, secondary absorption bands start to play more important role. Pretty soon, they merge with the main absorption band and form a long tail of the latter,extending the absorption far into high frequencies, raising the resulting absorption band to three, four or more octaves. The behavior of the secondary absorption bands is discussed. 展开更多
关键词 MAA Sound absorption characteristics of microperforated absorbers for random incidence
原文传递
CALCULATION OF THE HYDRODYNAMIC CHARACTERISTICS OF A OWC WAVE ENERGY ABSORBER
4
作者 Tao Yao-sen Shen Zhi-dong Fei Nai-zhen Shanghai Jiao Tong University,Shanghai 200030,P.R.China 《Journal of Hydrodynamics》 SCIE EI CSCD 1990年第1期84-94,共11页
This paper deals with the hydrodynamic response to waves of a 3-D OWC(oscillating water column)wave energy absorber with converging channel.The theoretical solutions are presented by means of three-dimensional GREEN f... This paper deals with the hydrodynamic response to waves of a 3-D OWC(oscillating water column)wave energy absorber with converging channel.The theoretical solutions are presented by means of three-dimensional GREEN function method.In the calculation,the flow field is divided into two subregions:an inside field and an outside one.In the outside field the solution is represented by oscillating sources distributed on the outer surface of the chamber of the absorber,while the solution of the inside field is expressed by Rakine source-distribution on the inner surface of the chamber.Both solutions are matched on the artificial interface.The calculated.values seem to agree reasonably well with experimental results. 展开更多
关键词 CALCULATION OF THE HYDRODYNAMIC characteristics OF A OWC WAVE ENERGY ABSORBER OWC WAVE BODY
原文传递
The characteristic of power flow in broad band dynamic vibration absorber
5
作者 WANG Minqing SHENG Meiping SUN Jincai LIU Yi(College of Marine Engineering, Northwestern Polytechnical University Xi’an 710072)Received May 15, 2001 Revised Jul. 6, 2001 《Chinese Journal of Acoustics》 2002年第4期360-364,共5页
DVA (dynamic vibration absorber) is good for restrain of the resonance vibration in low frequency, especially under the condition that there are only one mode or two modes in a frequency band. It seems rather difficul... DVA (dynamic vibration absorber) is good for restrain of the resonance vibration in low frequency, especially under the condition that there are only one mode or two modes in a frequency band. It seems rather difficult to control the resonance vibration of elastic structures in high frequency, since usually there are so many modes in high frequency band. The broad band DVA is brought forward to reduce the resonance vibration of elastic structures. The broad band DVA is designed on the basis of the characteristic of power flow in structure in this paper. The broad band DVA is effective on absorbing the resonance vibration power flow of the most important modes. The ability of absorbing vibration for the broad band DVA is analyzed in detail. The results obtained in this paper provide a basis for the optimization design of the broad band DVA and the optimization positions on structures. 展开更多
关键词 DVA The characteristic of power flow in broad band dynamic vibration absorber FLOW
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部