Abstract: The condition of flange wrinkling in conventional spinning of cones is established by modifying the theory of instability in deep-drawing of cups. Experiments conducted in order to test the ...

Abstract: Procedures for using a computer for the complete solution to plane strain as well as axisymmetric deformation problems have been developed. The velocity, strain rate, total effective strain, and ...

Abstract: A numerical method was developed to predict the local temperatures in the billet and in the tooling before the extrusion starts. The method was further extended for calculating the nonsteady-state ...

Abstract: The orthogonal metal-cutting process has been studied. It was found that the Ernst and Merchant solution, through the application of the limit-load theorems, appears to be a limiting solution ...

Abstract: The orthogonal metal-cutting process was reanalyzed and the several existing theories are discussed. Alternate methods of presentation of the theories were derived in terms of energy ratios and ...

Abstract: Metal-cutting studies were made with free-cutting steel SAE 1112 and alloy steel SAE 4135 in the as-received condition with artificially controlled tool-chip contact areas and flank contact areas ...

Abstract: The plane-strain rolling problem was solved by the rigid-plastic finite-element method based on the infinitesimal theory of plastic deformation. Both nonsteady-state solutions and steady-state ...

Abstract: Crack-propagation rate in 7075-T6 tension plates was determined for central cracks initially oriented in 45, 60, and 90 deg, to the width direction of the tension plates which were loaded ...

Abstract: The finite element method was used to obtain the stress and strain distributions in sheet metal on nonaxisymmetric flat punch heads in stretching. Displacement boundary conditions were assumed. ...