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

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On the Time-Dependent Spin Creep of a Railway Wheel 铁路车轮随时间旋转蠕变的研究
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1982-06-01 DOI: 10.1243/JMES_JOUR_1982_024_014_02
D. Newland
{"title":"On the Time-Dependent Spin Creep of a Railway Wheel","authors":"D. Newland","doi":"10.1243/JMES_JOUR_1982_024_014_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1982_024_014_02","url":null,"abstract":"This paper describes two theoretical calculations of the fluctuating spin creep of a railway wheel rolling on straight track. The first calculation is of the transient spin moment which occurs when a constant spin creep angular velocity is applied suddenly to a rolling wheel. This may occur, for example, when a wheel passes over a discontinuity in the rail and rolling contact is resumed suddenly. The second calculation is of the fluctuating spin creep moment which occurs when a coned railway wheel rolls along a slightly corrugated rail.The analysis is highly idealized, using the approximations of the simplified theory of Kalker and assuming that the area of slip is limited to a negligible proportion of the area of contact. In the first calculation, the area of contact is assumed to be circular; in the second calculation, it is assumed to be rectangular.Subject to these far-reaching assumptions, the results of the calculations suggest that oscillatory fluctuations in spin creep may be initiated by rail dis...","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129220167","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: 10
The Normal Impact of square Section long rods on ‘Rigid’ and ‘Soft’ Targets 方截面长杆对“刚性”和“软”目标的正常冲击
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1982-03-01 DOI: 10.1243/JMES_JOUR_1982_024_007_02
A. Sengupta, C. J. Wigglesworth, S. Ghosh, W. Johnson, S. Reid
{"title":"The Normal Impact of square Section long rods on ‘Rigid’ and ‘Soft’ Targets","authors":"A. Sengupta, C. J. Wigglesworth, S. Ghosh, W. Johnson, S. Reid","doi":"10.1243/JMES_JOUR_1982_024_007_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1982_024_007_02","url":null,"abstract":"Studies of long rod impact are almost invariably associated with rods of circular cross-section, but in this paper experiments are described in which square cross-section long rods were made to impinge normally on nominally rigid target plates as well as on ‘soft’ targets of comparable strength. Plasticine has been used as the model material to simulate metallic projectiles and targets. The various modes of deformation and flow associated with square section rod projectiles have been identified and compared with those observed earlier by Johnson et al. (5)¶ in a study using long rods of circular cross-section.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127659305","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
An Analysis of the Squeeze Film between Porous Rectangular Plates Including the Surface Roughness Effects 考虑表面粗糙度影响的多孔矩形板间挤压膜分析
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1982-03-01 DOI: 10.1243/JMES_JOUR_1982_024_009_02
J. Prakash, Kartikeya Tiwari
{"title":"An Analysis of the Squeeze Film between Porous Rectangular Plates Including the Surface Roughness Effects","authors":"J. Prakash, Kartikeya Tiwari","doi":"10.1243/JMES_JOUR_1982_024_009_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1982_024_009_02","url":null,"abstract":"The paper describes a theoretical analysis of the effects of unidirectional surface roughness on the response of a squeeze film between two porous rectangular plates of finite dimensions. The problem is solved analytically using Fourier expansions. It is shown that the nominal geometry as characterized by the aspect ratio of the plates has a profound effect on the system.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134138235","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
The Preliminary Analysis of Axial Turbines by a Simplified Throughflow Procedure 用简化通流法初步分析轴向涡轮
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1982-03-01 DOI: 10.1243/JMES_JOUR_1982_024_004_02
N. A. Mitchell
{"title":"The Preliminary Analysis of Axial Turbines by a Simplified Throughflow Procedure","authors":"N. A. Mitchell","doi":"10.1243/JMES_JOUR_1982_024_004_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1982_024_004_02","url":null,"abstract":"A new iterative scheme for calculating the axisymmetric flow through a turbine, which converges to a given value of turbine exit pressure, is described. It is intended to be used at a preliminary stage in a turbine design procedure instead of a one-dimensional calculation, since it enables spanwise variations of turbine performance to be calculated with reasonable accuracy and with minimum data preparation in approximately 1/30 of the computer time of a conventional axisymmetric calculation. The method solves the full axisymmetric flow equations on three streamlines through the machine at hub, midspan, and tip, although an approximation is introduced regarding the curvature of the centre streamline. Agreement with a full streamline curvature analysis is shown to be good, and comparisons with a one-dimensional Ainley-Mathieson based performance calculation show how the method is sensitive to root and tip behaviour.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115488166","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: 1
The Prediction of Film Thickness in a Mechanical face Seal with Circumferential Waviness on both the face and the seat 端面和阀座均有周向波纹的机械端面密封膜厚预测
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1982-03-01 DOI: 10.1243/JMES_JOUR_1982_024_008_02
A. Ruddy, D. Dowson, C. Taylor
{"title":"The Prediction of Film Thickness in a Mechanical face Seal with Circumferential Waviness on both the face and the seat","authors":"A. Ruddy, D. Dowson, C. Taylor","doi":"10.1243/JMES_JOUR_1982_024_008_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1982_024_008_02","url":null,"abstract":"The effect of two-period waviness on both the face and the seat of a mechanical face seal is examined theoretically in this paper. A closed-loop cyclic solution of the two-dimensional Reynolds' equation including squeeze-film effects is described. Results for a 45 mm diameter seal are presented which show that squeeze-film effects play an important role in protecting the fluid-film over parts of the cycle where the entraining effect is small. The analysis can be extended to allow for misalignment of the sealing faces and for the incorporation of mixed-lubrication theory.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128179406","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: 20
Static Deflections and Stresses in Sandwich Beams under Various Boundary Conditions 不同边界条件下夹层梁的静力挠度和应力
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1982-03-01 DOI: 10.1243/JMES_JOUR_1982_024_005_02
S. R. Sharma, D. K. Rao
{"title":"Static Deflections and Stresses in Sandwich Beams under Various Boundary Conditions","authors":"S. R. Sharma, D. K. Rao","doi":"10.1243/JMES_JOUR_1982_024_005_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1982_024_005_02","url":null,"abstract":"Expressions for deflections and stresses of sandwich beams are derived for all practically important boundary conditions for both uniform as well as concentrated loads. The energy method is used in deriving the differential equations governing deflection which are then solved by using the Laplace transform method. The influence of system parameters on deflections and stresses is illustrated for important boundary conditions by means of graphs and formulae. These investigations reveal that riveting an edge can reduce the deflections and stresses by as much as 40 per cent.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114453141","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: 16
A Novel Technique of wire Drawing 一种新型拉丝技术
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1982-03-01 DOI: 10.1243/JMES_JOUR_1982_024_003_02
M. Hashmi, G. R. Symmons, H. Parvinmehr
{"title":"A Novel Technique of wire Drawing","authors":"M. Hashmi, G. R. Symmons, H. Parvinmehr","doi":"10.1243/JMES_JOUR_1982_024_003_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1982_024_003_02","url":null,"abstract":"In the conventional wire drawing process the reduction is achieved by pulling the wire through a tapered die. The minimum bore size of such a die is always smaller than the inlet wire diameter. A suitable lubricant is used to reduce the die wear and drawing load and to produce a good surface finish. Nevertheless, the problem of die wear and wire breakage during start-up is always present.In this paper a new technique of wire drawing is being reported which eliminates the problem of wear and breakage during start-up and also the need to have the diameter of the leading end of the wire reduced for easy insertion through the die. The reduction of the wire diameter is affected by means of the hydrodynamic action of a polymer melt lubricant in conjunction with a long tapering tube, the diameter of the tube being greater than the nominal wire diameter. Reductions in area of up to 21 per cent can be obtained in one single pass using this dieless reduction unit.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121428989","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: 33
Research note: the determination of lubricant flow rate from a static grooved rectangular thrust bearing using a stream function analysis 研究说明:使用流函数分析确定静槽矩形推力轴承的润滑剂流量
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1982-03-01 DOI: 10.1243/JMES_JOUR_1982_024_010_02
D. Hargreaves, C. Taylor
{"title":"Research note: the determination of lubricant flow rate from a static grooved rectangular thrust bearing using a stream function analysis","authors":"D. Hargreaves, C. Taylor","doi":"10.1243/JMES_JOUR_1982_024_010_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1982_024_010_02","url":null,"abstract":"","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130047724","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
An Experimental and Theoretical study of Lubricant flow rate in Static, Grooved, Rectangular Thrust Bearings 静态、沟槽、矩形止推轴承润滑油流量的实验与理论研究
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1982-03-01 DOI: 10.1243/JMES_JOUR_1982_024_006_02
D. Hargreaves, C. Taylor
{"title":"An Experimental and Theoretical study of Lubricant flow rate in Static, Grooved, Rectangular Thrust Bearings","authors":"D. Hargreaves, C. Taylor","doi":"10.1243/JMES_JOUR_1982_024_006_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1982_024_006_02","url":null,"abstract":"The work to be described here was undertaken in the preliminary stages of a research programme designed to study the true extent of lubricant films in non-stationary, grooved, rectangular thrust bearings. In such externally pressurized bearings an air-lubricant interface may be formed. The study of this interface was seen as a useful step in a consideration of film formation and flow rate prediction in liquid film journal bearings.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1982-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128321649","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 Sliding on Rolling Contact Pitting 滑动对滚动接触点蚀的影响
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1981-12-01 DOI: 10.1243/JMES_JOUR_1981_023_053_02
P. Dawson
{"title":"The Effect of Sliding on Rolling Contact Pitting","authors":"P. Dawson","doi":"10.1243/JMES_JOUR_1981_023_053_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1981_023_053_02","url":null,"abstract":"Using a disc machine and conditions generally relevant to gearing the effect of sliding on the pitting of a relatively soft 0·3 per cent carbon steel has been investigated. It is concluded that the...","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1981-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122927491","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
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