Now showing items 6281-6300 of 7723

    • Influence of Channel Curvature on Flow, Pressure Distribution, and Power Requirements of Screw Pumps and Melt Extruders 

      M. L. Booy (The American Society of Mechanical Engineers (ASME), 1964)
      The influence of channel curvature on flow through screw pumps and melt extruders is derived for infinite channel aspect ratios. Flow rate and horsepower relations for flow of Newtonian liquids ...
    • Mathematical Foundations for Manufacturing 

      S. H. Kim; N. P. Suh (The American Society of Mechanical Engineers (ASME), 1987)
      For the field of manufacturing to become a science, it is necessary to develop general mathematical descriptions for the analysis and synthesis of manufacturing systems. Standard analytic models, ...
    • Influence of the Abrasive on Fatigue in Precision Grinding 

      H. K. Tönshoff; F. Hetz (The American Society of Mechanical Engineers (ASME), 1987)
      The surface residual stresses produced by grinding may have a strong influence on the life of highly stressed components. Different abrasives such as aluminum oxide (Al2 O3 ) and cubic boron ...
    • Honing Conditions for Effective Use of Diamond and Cubic Boron Nitride Sticks 

      T. Ueda; A. Yamamoto (The American Society of Mechanical Engineers (ASME), 1987)
      Based on the honing theory developed earlier [12], the nominal depth of cut āi , was found to express the severity of honing conditions when using diamond and CBN sticks. The critical nominal ...
    • The Stability of Spinning Balloon and Balloon Collapse 

      S. Zhang (The American Society of Mechanical Engineers (ASME), 1987)
      This paper presents the criterion of the existence of a balloon. We find that there exists a limiting value (T 0 /mR 2 ω2 )c which can predict the critical conditions under which a balloon ...
    • Effects of Accelerated Tests on Shear Flow Stress in Machining 

      V. K. Jain; B. K. Gupta (The American Society of Mechanical Engineers (ASME), 1987)
      Facing and taper turning tests (also known as accelerated cutting tests) are commonly used for the evaluation of machinability of materials. Of late, it has been reported that instantaneous ...
    • Reynolds Number Effects on Regenerative Pump Performance 

      J. W. Hollenberg (The American Society of Mechanical Engineers (ASME), 1987)
      Reynolds number effects on the performance of a conventional design regenerative pump were investigated, using glycerine-water mixtures, between an impeller tip speed Reynolds number, RT , of ...
    • A Dynamic State Model for On-Line Tool Wear Estimation in Turning 

      K. Danai; A. G. Ulsoy (The American Society of Mechanical Engineers (ASME), 1987)
      This paper proposes a dynamic state model of tool wear. This model is developed for the design of an adaptive observer which is used for on-line tool wear sensing in turning based on force ...
    • Gains Selection for a Variable Gain Adaptive Control System for Turning 

      Shield Bao-Hsin Lin; Oren Masory (The American Society of Mechanical Engineers (ASME), 1987)
      The adaptive control constraint system described is a nonlinear, sampled data system designed to regulate the cutting force during turning operations. The controller keeps the system stable under ...
    • Air Flow in Yarn Texturing Nozzles 

      M. Acar; R. K. Turton; G. R. Wray (The American Society of Mechanical Engineers (ASME), 1987)
      The air-jet texturing process, a purely mechanical means of texturing continuous filament yarns, is described. Industrial texturing nozzles are reviewed and categorized in two groups, either as ...
    • Dynamic Modeling and Analysis of the Boring Machining System 

      G. M. Zhang; S. G. Kapoor (The American Society of Mechanical Engineers (ASME), 1987)
      A system of model formulated in the state variable space is proposed to describe the dynamic characteristics of the boring machining system. Particular attention is paid to the effect of the ...
    • Development of a Forecasting Compensatory Control System for Cylindrical Grinding 

      K. H. Kim; K. F. Eman; S. M. Wu (The American Society of Mechanical Engineers (ASME), 1987)
      A forecasting compensatory control (FCC) system was developed to improve workpiece roundness in cylindrical grinding operations. The spindle radial error motion (SREM) at the grinding position, ...
    • A New Time Domain Multiple Input Modal Analysis Method 

      D. W. Cho; K. F. Eman; S. M. Wu (The American Society of Mechanical Engineers (ASME), 1987)
      A time domain approach for multiple input modal analysis of oscillatory systems is proposed. The mathematical foundation for the approach is given along with its applications to a simulated ...
    • An Investigation into the Relationship between Torque and Load in Ring Rolling 

      D. Y. Yang; J. S. Ryoo (The American Society of Mechanical Engineers (ASME), 1987)
      In the ring-rolling process most of the required forming energy is transferred from the roll into the deforming region by the aid of friction between the roll surface and the ring. In this ...
    • An Analysis of the Drill Wandering Motion 

      S. J. Lee; K. F. Eman; S. M. Wu (The American Society of Mechanical Engineers (ASME), 1987)
      An analytical model has been developed to investigate the drill wandering motion quantitatively. It has been shown mathematically why the resulting distorted polygon-shaped hole always has an odd ...
    • Analyses of Axisymmetric Sheet Forming Processes by Rigid-Viscoplastic Finite Element Method 

      J. J. Park; T. Altan; S. I. Oh (The American Society of Mechanical Engineers (ASME), 1987)
      Two types of sheet forming processes are analyzed by rigid-viscoplastic FEM (Finite Element Method): axisymmetric punch stretching and hydrostatic bulge forming. The present formulations, based on ...
    • Measurement of the Interfacial Stresses in Rolling Using the Elastic Deformation of the Roll 

      D. J. Meierhofer; K. A. Stelson (The American Society of Mechanical Engineers (ASME), 1987)
      A new method to measure the frictional stresses and normal pressure in the roll gap during cold rolling, and experimental verification of this new method, are presented. The method overcomes ...
    • Further Development of Sheet Metal Forming Analysis Method 

      S. A. Majlessi; D. Lee (The American Society of Mechanical Engineers (ASME), 1987)
      The finite element analysis procedure used to model the sheet metal forming process is further developed by incorporating a refined numerical procedure and an improved metal-tool friction analysis ...
    • Effects of Punch Cross-Section on Deep-Drawability of Square Shell of Aluminum Sheet 

      N. Kawai; H. Hayashi; F. Kondoh; T. Mori (The American Society of Mechanical Engineers (ASME), 1987)
      Effects of product shape and a planar-anisotropy on a square shell drawability were studied, using commercially pure aluminum sheet. Two phenomena were mainly considered to affect a forming ...
    • Analysis of Strip Rolling by the Upper Bound Approach 

      B. Avitzur; S. Talbert; W. Gordon (The American Society of Mechanical Engineers (ASME), 1987)
      The process of strip rolling is analyzed using the upper bound technique. Two triangular velocity fields, one with triangles in linear rigid body motion and the other with triangles in rotational ...