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

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The Steady Performance of Externally Pressurized Porous Rectangular Pad Gas Bearings Incorporating Viscous and Inertia Dominated Flow 粘性惯性主导流外压多孔矩形垫气轴承的稳定性能
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-08-01 DOI: 10.1243/JMES_JOUR_1980_022_039_02
A. G. Naaum, G. Lewis
{"title":"The Steady Performance of Externally Pressurized Porous Rectangular Pad Gas Bearings Incorporating Viscous and Inertia Dominated Flow","authors":"A. G. Naaum, G. Lewis","doi":"10.1243/JMES_JOUR_1980_022_039_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_039_02","url":null,"abstract":"A general analysis of three-dimensional flow through a porous rectangular thrust bearing which incorporates both viscous and inertia permeabilities of the porous media is presented. Solutions for load capacity and flow rate are obtained using standard numerical procedure but introducing a new term ‘the effective permeability’. It is shown that inertia flow reduces the load capacity and increases the flow rate through the bearing.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124015612","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: 3
Turbulent Flow over a Plane Normal Wall 平面法向壁面上的湍流
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-08-01 DOI: 10.1243/JMES_JOUR_1980_022_040_02
S. Fraser, M. Siddig
{"title":"Turbulent Flow over a Plane Normal Wall","authors":"S. Fraser, M. Siddig","doi":"10.1243/JMES_JOUR_1980_022_040_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_040_02","url":null,"abstract":"A DISA two-colour back-scatter laser Doppler anemometer was used to take measurements of mean and fluctuating velocities of an air flow of 4.6 × 104 Reynolds number in a short duct with a normal wall fixed to one side. Walls of 30 and 20 mm height were investigated and the resulting flow patterns were compared.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123240454","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
The Measurement of the Radial Stiffness of Rolling Element Bearings under Oscillating Conditions 振动条件下滚动轴承径向刚度的测量
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-08-01 DOI: 10.1243/JMES_JOUR_1980_022_035_02
T. Walford, B. Stone
{"title":"The Measurement of the Radial Stiffness of Rolling Element Bearings under Oscillating Conditions","authors":"T. Walford, B. Stone","doi":"10.1243/JMES_JOUR_1980_022_035_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_035_02","url":null,"abstract":"There is very little information available on the characteristics of rolling element bearings under oscillating conditions. This is because of the difficulty that has been experienced in measuring the relevant characteristics. A rig is described which is very simple in principle and allows the measurement of the radial stiffness of a pair of bearings. For the angular contact bearings tested the levels of damping obtained are larger than previously expected.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128264337","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: 52
An Inertial Relaxation Method of Curing Numerical Instability in Prediction of Flows Influenced by Severe Body Forces 一种惯性松弛法在预测受剧烈体力影响的流动时处理数值不稳定性
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-06-01 DOI: 10.1243/JMES_JOUR_1980_022_030_02
F. Ideriah
{"title":"An Inertial Relaxation Method of Curing Numerical Instability in Prediction of Flows Influenced by Severe Body Forces","authors":"F. Ideriah","doi":"10.1243/JMES_JOUR_1980_022_030_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_030_02","url":null,"abstract":"","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"155 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":"123924242","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
A Theory of Contact Loss at Resolute Joints with Clearance 带间隙的刚毅接头接触损失理论
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-06-01 DOI: 10.1243/JMES_JOUR_1980_022_027_02
R. S. Haines
{"title":"A Theory of Contact Loss at Resolute Joints with Clearance","authors":"R. S. Haines","doi":"10.1243/JMES_JOUR_1980_022_027_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_027_02","url":null,"abstract":"Equations are derived that describe the conditions at a general idealized revolute joint, with clearance but with no hydrodynamic lubrication present. The equations are governed by three dimensionless parameters that depend on the nominal motion, mass distribution and influence coefficients of the linkage in which the joint appears, as well as the clearance magnitude. A series of numerical solutions of the equations is used to predict the conditions under which contact is lost, leading to impacts. The results are presented in the form of a design chart and the implications are discussed.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1980-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115396560","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: 51
Wear Out Failure Patterns and Their Interpretation 磨损失效模式及其解释
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-06-01 DOI: 10.1243/JMES_JOUR_1980_022_029_02
A. Carter
{"title":"Wear Out Failure Patterns and Their Interpretation","authors":"A. Carter","doi":"10.1243/JMES_JOUR_1980_022_029_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_029_02","url":null,"abstract":"It is shown theoretically that fatigue of a component will result in a failure pattern which consists of an initial period of intrinsic reliability, or near zero failures, followed by a rapid increase in failure rate when loss of fatigue strength becomes operative, to be followed in turn by a period during which the failure rate decreases with time or maybe remains constant. By contrast other wear-out modes involving a continuous loss of strength give rise to a steadily increasing failure rate after the period of intrinsic reliability has expired. Practical examples of each type are quoted to substantiate the theoretical deductions. The interpretation of wear out characteristics by Weibull distributions is discussed.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"131 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":"122988184","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: 3
Measurements and Calculations of the Isothermal Flow in Axisymmetric Models of Combustor Geometries 燃烧室几何形状轴对称模型中等温流动的测量与计算
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-06-01 DOI: 10.1243/JMES_JOUR_1980_022_025_02
A. Green, J. Whitelaw
{"title":"Measurements and Calculations of the Isothermal Flow in Axisymmetric Models of Combustor Geometries","authors":"A. Green, J. Whitelaw","doi":"10.1243/JMES_JOUR_1980_022_025_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_025_02","url":null,"abstract":"Measurements with laser-Doppler anemometry and calculations with finite-difference solutions of the time-averaged Navier-Stokes equations and a two-equation turbulence model, have been obtained for the turbulent isothermal flow in an axisymmetric geometry related to gas-turbine combustors. The results quantify the flow patterns in the arrangement and demonstrate the extent to which they can be represented by calculation. The discrepancies between measured and calculated results are shown to depend more on the distribution of grid nodes than on the turbulence model. Even with a distribution of nodes which is considered to be near optimum, differences between measurement and calculation exist and are particularly significant in the regions of steep velocity gradient immediately downstream of the incoming annular jet. The general trends are, however, correctly represented, and the calculation method has been used to determine the influence of the width of the annulus and of the jet gap. The results provide i...","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"114 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":"115274814","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: 13
Dynamics of the Dynatune Gyroscope 动态陀螺仪的动力学
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-06-01 DOI: 10.1243/JMES_JOUR_1980_022_028_02
D. Bulman, L. Maunder
{"title":"Dynamics of the Dynatune Gyroscope","authors":"D. Bulman, L. Maunder","doi":"10.1243/JMES_JOUR_1980_022_028_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_028_02","url":null,"abstract":"The paper describes a new form of tuned gyroscope capable of achieving the high precision required for inertial navigation. The essential features of the arrangement consist of a rotor, driven and supported by a set of transverse flexible spokes to which tuning masses are added. The principle of operation is described briefly and confirmed by reference to experimental results.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"46 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":"121988048","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
The Rolling Contact of Misaligned Elastic Cylinders 错位弹性圆柱的滚动接触
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-06-01 DOI: 10.1243/JMES_JOUR_1980_022_026_02
James Barber
{"title":"The Rolling Contact of Misaligned Elastic Cylinders","authors":"James Barber","doi":"10.1243/JMES_JOUR_1980_022_026_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_026_02","url":null,"abstract":"A solution is given for the tangential tractions developed between two rolling cylinders of identical elastic materials, whose axes are slightly misaligned. A critical misalignment angle is found, above which slip occurs throughout the contact area. For smaller angles, the contact area contains regions of adhesion and microslip. Results are given for the extent of these regions and for the axial force generated due to the misalignment.","PeriodicalId":114598,"journal":{"name":"Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23)","volume":"19 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":"121052067","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 Investigation of the Transient Effects during Variable Speed Cutting 变速切削过程中的瞬态效应研究
Archive: Journal of Mechanical Engineering Science 1959-1982 (vols 1-23) Pub Date : 1980-06-01 DOI: 10.1243/JMES_JOUR_1980_022_024_02
J. Sexton, B. Stone
{"title":"An Investigation of the Transient Effects during Variable Speed Cutting","authors":"J. Sexton, B. Stone","doi":"10.1243/JMES_JOUR_1980_022_024_02","DOIUrl":"https://doi.org/10.1243/JMES_JOUR_1980_022_024_02","url":null,"abstract":"Conventionally the stability analysis of machine tools is restricted to determining if a particular operation will become unstable. The transient behaviour is not examined in any further detail. However, under certain conditions larger transient vibrations occur even though the process may ultimately be stable. A method of prediction of transient behaviour is presented and applied to variable speed cutting on a lathe where such transients are significant.","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":"114550163","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
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