Effect of Planar Anisotropy on the Properties of Workpieces From Tailor Welded Blanks of Dual-Phase Steel

Abstract

The combination of different mechanical properties of tailor welded blanks (TWB-s) results in non-constant plastic flow and instability of the weld interface during forming. This is most marked when combining metal sheets of different thicknesses or sheets with significantly different plastic characteristics. This non-uniformity was also observed for tailor welded blanks which consisted of equally thick sheets of one material but had different texture orientations after rolling. When examining the formability of such welded blanks, simulations were performed and verified by real experiments of deep drawing of a rectangular box. Since the influence of the differently oriented texture was not very significant, it was necessary to assess the influence of the ductile characteristics of the weld metal on the overall formability. Since the influence of the differently oriented texture was not very significant, it was necessary to assess the influence of the stress-strain characteristics of the weld metal on the overall formability.

Optimization of the Forming Process of Gutter End Cap Using the Finite Element Method

“…Numerical simulation of forming can help in solving technological problems, such as stamping failure, wrinkling creation and springback [Spisak 2000, Mulidran 2018]. The accuracy, reliability of the prediction of the deformation behavior of the material by numerical simulation depends on the nonlinearity of the material properties, on the defined critical values of deformations, friction ratios on the contact surfaces between sheet and tool, and on the anisotropy in the sheet thickness and sheet plane [Slota 2012, Krenicky 2012, Tomas 2019, Brusilova 2020. In this work, the influence of surface anisotropy and friction conditions on the drawing process of the gutter end cap (Fig.…”