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Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)最新文献

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Measurement of Sodium Vapour Pressure Using Sodium as Manometer Fluid 用钠作压力计流体测量钠蒸气压力
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-06-01 DOI: 10.1243/JMES_JOUR_1980_022_031_02
P. J. Erens, D. Kröger
{"title":"Measurement of Sodium Vapour Pressure Using Sodium as Manometer Fluid","authors":"P. J. Erens, D. Kröger","doi":"10.1243/JMES_JOUR_1980_022_031_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_031_02","url":null,"abstract":"The pressure of saturated sodium vapour in the range 1114–47 500N/m2 is measured using a sodium manometer developed for this purpose. Commercially obtainable reactor grade sodium is used and is found to follow the equation log P= 9.36037-(5048–74/r), where P is in N/m2 and T in Kelvin.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116533054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic Characteristics of Aerostatic Thrust Bearings with Porous Inserts 多孔嵌套静压止推轴承的动态特性
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-04-01 DOI: 10.1243/JMES_JOUR_1980_022_015_02
B. C. Majumdar
{"title":"Dynamic Characteristics of Aerostatic Thrust Bearings with Porous Inserts","authors":"B. C. Majumdar","doi":"10.1243/JMES_JOUR_1980_022_015_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_015_02","url":null,"abstract":"A first-order perturbation method is adopted to find the dynamic behaviour of an aerostatic circular thrust bearing having a central porous insert as a restrictor. The linearized gas film stiffness and damping are derived and used to study their behaviour with other design variables.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131025152","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
The Effect of Combined Coning and Waviness on the Separating Force in Mechanical Face Seals 锥度和波纹度组合对机械密封分离力的影响
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-04-01 DOI: 10.1243/JMES_JOUR_1980_022_016_02
I. Etsion
{"title":"The Effect of Combined Coning and Waviness on the Separating Force in Mechanical Face Seals","authors":"I. Etsion","doi":"10.1243/JMES_JOUR_1980_022_016_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_016_02","url":null,"abstract":"A mechanical seal model having face geometry of combined waviness and coning is analysed. A closed form analytical solution for the pressure in the lubricating film and the axial separating force is presented, covering the complete range of waviness and coning. The separating force is found to be linearly dependent on the number of waves and strongly affected by coning. A comparison with a seal model having angular misalignment combined with coning reveals that in both models the separating force is essentially of the same order of magnitude.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130860017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
The Characteristics of a Statically Loaded Journal Bearing with Superlaminar Flow 超层流静载荷滑动轴承的特性研究
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-04-01 DOI: 10.1243/JMES_JOUR_1980_022_019_02
R. Hinton, J. Roberts
{"title":"The Characteristics of a Statically Loaded Journal Bearing with Superlaminar Flow","authors":"R. Hinton, J. Roberts","doi":"10.1243/JMES_JOUR_1980_022_019_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_019_02","url":null,"abstract":"Experimental results are presented, relating to the friction factor, load capacity and attitude angle, for a plain, cylindrical journal bearing with a central, circumferential inlet groove. The length to diameter ratio of the journal bearing was 1/3 and the clearance ratio was 0.011. By the use of various lubricants, including water, Reynolds numbers ranging from 40 to 50 000 were attained. Comparisons with various theoretical predictions are given. It is shown that a simple, empirical theory, which incorporates measured friction factors, gives better agreement with the experimental load capacity results than previous theories.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"306 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123316876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Normal Approach of a Cylinder towards an Elastic Layer 圆柱向弹性层的法向逼近
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-04-01 DOI: 10.1243/JMES_JOUR_1980_022_017_02
C. Cudworth, J. F. Mykura
{"title":"Normal Approach of a Cylinder towards an Elastic Layer","authors":"C. Cudworth, J. F. Mykura","doi":"10.1243/JMES_JOUR_1980_022_017_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_017_02","url":null,"abstract":"This paper considers the squeeze film lubrication process of a cylinder approaching a plane rigid surface covered in a thin elastic layer. A simplified lubrication theory is presented, which makes the assumption that the shapes of the solids are the same as the elastically deformed surfaces under dry conditions. The lubrication equations are solved using alternative pressure boundary conditions derived from the dry contact pressure curve. In the experiments, lubricant film thickness is measured using optical interference methods. Curves of film thickness against time are plotted, and the effects on these curves of variations in load and layer thickness are shown to agree with the predictions of the theory.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122691508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Effects of Cathode-Mandrel Surface Irregularities on the Mechanical Properties and Structure of Electroformed Iron Foil 阴极-心轴表面不规则性对电铸铁箔力学性能和组织的影响
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-04-01 DOI: 10.1243/JMES_JOUR_1980_022_014_02
W. Crichton, J. McGeough, J. Thomson
{"title":"Effects of Cathode-Mandrel Surface Irregularities on the Mechanical Properties and Structure of Electroformed Iron Foil","authors":"W. Crichton, J. McGeough, J. Thomson","doi":"10.1243/JMES_JOUR_1980_022_014_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_014_02","url":null,"abstract":"Iron foil, of thicknesses between 003 and 0.15 mm has been electroformed at a current density of 30 A/dm2 and an electrolyte temperature of 100°C upon cathodes of surface roughness ranging from 0.04 to 4.4 μm Ra. The surface roughnesses of the face of the foil formed adjacent to the cathode, and of that electrode, are similar. The roughness of the reverse anodic face increases with increasing foil thickness, due to the increase in size of the crystal growth sites. The hardness of the cathodic face of the foil is unaffected by either cathode surface roughness or foil thickness. The hardness of the anodic face increases with both increasing cathode surface roughness and decreasing foil thickness, due to corresponding changes in grain size. A slight net decrease in tensile properties with increasing cathode surface roughness is attributed to the greater amount of stress concentration borne by the rougher foils. Young's modulus for the foil is not affected by cathode surface roughness.The electroforming of fo...","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131192395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
An Experimental Study of Hydrodynamic Film Rupture in a Steadily-Loaded, Non-Conformal Contact 稳态非保形接触中水动力膜破裂的实验研究
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-04-01 DOI: 10.1243/JMES_JOUR_1980_022_018_02
D. Dowson, E. H. Smith, C. Taylor
{"title":"An Experimental Study of Hydrodynamic Film Rupture in a Steadily-Loaded, Non-Conformal Contact","authors":"D. Dowson, E. H. Smith, C. Taylor","doi":"10.1243/JMES_JOUR_1980_022_018_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_018_02","url":null,"abstract":"A study of ventilated gaseous cavitation in a steadily-loaded, non-conformal contact has been undertaken. The work is particularly appropriate to what can be called ‘lightly loaded’ situations such as those occurring in radial race seals and certain industrial coating processes. A wide-ranging experimental programme has been carried out and measurements of film rupture location and pressure distributions compared to computer predictions obtained using the cavitation boundary conditions of Coyne and Elrod. Photographic studies are also reported. The boundary conditions due to Coyne and Elrod have been confirmed as appropriate for the experimental conditions studied.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"163 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121857481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Some Effects of Heat-Treatment upon the Mechanical Properties of Electroformed Iron-Nickel Alloy Foil: 热处理对电铸铁镍合金箔力学性能的影响
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-04-01 DOI: 10.1243/JMES_JOUR_1980_022_021_02
S. Lai, J. McGeough
{"title":"Some Effects of Heat-Treatment upon the Mechanical Properties of Electroformed Iron-Nickel Alloy Foil:","authors":"S. Lai, J. McGeough","doi":"10.1243/JMES_JOUR_1980_022_021_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_021_02","url":null,"abstract":"Contributions intended for publication as Research Notes should preferably be limited in length to 1000 words and two illustrations, and should be addressed to the Manuscript Section, The Institution of Mechanical Engineers, I Birdcage Walk, Westminster, London SW1H 9JJThe problem of hydrogen embrittlement, which adversely affects the quality and mechanical properties of electroformed iron-nickel alloy foil, is considered. Heat-treatment, such as annealing, can reduce these effects of hydrogen embrittlement. The electroformed metal can also be converted to alloy steel by carburizing; and by other heat-treatments, such as hardening and tempering, a range of mechanical properties for the foil can be achieved.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129064653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Turbulent Heat Transfer in a Revolving Square-Sectioned Tube 旋转方截面管内的紊流传热
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-04-01 DOI: 10.1243/JMES_JOUR_1980_022_020_02
W. Morris, F. M. Dias
{"title":"Turbulent Heat Transfer in a Revolving Square-Sectioned Tube","authors":"W. Morris, F. M. Dias","doi":"10.1243/JMES_JOUR_1980_022_020_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_020_02","url":null,"abstract":"An investigation of turbulent heat transfer in a revolving square-sectioned tube is reported in this paper. It is demonstrated that rotation about a parallel axis enhances the customary forced convection heat transfer, and a correlating equation for assessing this effect is proposed. The range of parameters covered in the experiments permit the results to have application for the assessment of heat transfer in certain gas-cooled electrical machine rotors.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124787471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
A Rapidly Converging Theoretical Solution of the Elastohydrodynamic Problem for Rectangular Rubber Seals 矩形橡胶密封件弹性流体动力学问题的快速收敛理论解
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-02-01 DOI: 10.1243/JMES_JOUR_1980_022_004_02
L. Ruskell
{"title":"A Rapidly Converging Theoretical Solution of the Elastohydrodynamic Problem for Rectangular Rubber Seals","authors":"L. Ruskell","doi":"10.1243/JMES_JOUR_1980_022_004_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_004_02","url":null,"abstract":"A theoretical approach is described which overcomes the problems of convergence previously associated with obtaining solutions of the elastohydrodynamic equations for a reciprocating, rectangular section rubber seal. Convergence of this method is extremely rapid. Results are presented which illustrate that it is suitable both for instrokes and outstrokes at realistic sealed pressures. Experimental measurements of pressure distribution are presented for comparison.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125534789","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 58
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