Abstract: Spherical dies are increasing in popularity in the cold-forming industry because of the ease in subsequent secondary operations. This paper presents criteria curves, calculated using the finite ...

Abstract: In this series of papers, the generalized ring forming process is analyzed for a Mises’ material, using an upper bound approach. This analysis allows the motivation for the process to be ...

Abstract: The generalized ring forming process has been analyzed for a Mises’ material, using an upper bound approach. This analysis allows the motivation for the process to be supplied on any surface ...

Abstract: The generalized ring forming process has been analyzed for a Mises’ material, using an upper bound approach. This analysis allows the motivation for the process to be supplied on any surface ...

Abstract: This paper appraises the accuracy with which distortion and residual stress can be predicted in carburized and quenched gear steels. An experimental sample is heattreated such that a nonsymmetric ...

Abstract: An upper bound analysis has been developed to model the flat rolling of a perfectly plastic material. A rigid body rotational velocity field was assumed for the deformation region. This field ...

Abstract: Dual phase steel tubes can be produced by a variety of methods. In the present study, comparisons between dual phase steel tubes produced directly from a dual phase steel sheet and tubes ...

Abstract: Equation (26) should read Ẇf=πR02σ0v0 2m3 r0/R0rf/R0|Δv3|ρ2∂ψ∂ρ2+1ρ sin(ψ)dρwhich causes the friction power losses to be slightly larger than presented in the paper.

Abstract: In cathode ray tubes, a tension is imposed into the shadow mask during manufacturing to avoid slight variations in the position due to in service temperatures or deformation. Initially, tension ...

Abstract: An upper bound solution for extrusion through a spherical die has been developed. Equations for the velocity and strain rate fields in the deformation zone are presented. The equations to ...