β Scribed by D.O. Bello; S. Walton
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
Sheet metal working fluids are used for reducing wear of forming sheets and dies and lowering friction at the die/workpiece interface. The reduction of friction and wear results in fewer defects and improved geometric and surface finish quality. In this paper, nanoparticles of several materials with
The finite element simulation is now widely used in the design of stamping tools. That is, the trial and error procedure is replaced by simulation in which defects of sheet forming processes are predicted and evaluated. The theoretical background and numerical implementation of a three dimensional f
Bead-drawlng experiments were conducted with bare, hot-dlpped, electrogalvanlzed, and galvannealed steel sheets using parafflnlc base oils (of 4.5, 35, and 285 mmZ/s viscosity at 38 UC) with stearic acid, DBDS, TCP, and chlorlnated paraffin as additives. Values of coefficient of friction and optical
Three phenomenological yield criteria are adopted to describe the plastic behaviour of sheet metals with normal plastic anisotropy. The sheet metals are assumed to be elastic-plastic, rate-sensitive and incompressible. A rate-sensitive thin shell ΓΏnite element formulation based on the virtual work p