A validated numerical model for in-plane stress/strain prediction is essential in understanding the deformation behaviour of sheet metal forming process, in particular, asymmetric deep drawing of advanced high strength steel sheet. In this work, the Yld2000-2d anisotropic yield criterion integrated with the initial homogeneous anisotropic hardening model was employed to describe the complex mat...

Materials with ultrafine-grained structure and unique physical and mechanical properties can be obtained by methods of severe plastic deformation, which include processes of asymmetric rolling (AR). Asymmetric rolling is a very effective way to create ultrafine-grained structures of metals and alloys. Since the asymmetric rolling is a continuous process, it has great potential for industrial pr...

A crystal plasticity based full-field microstructure simulation approach is used to virtually determine mechanical properties of sheet metals. Microstructural features like the specific grain morphology and the crystallographic texture are taken into account to predict the plastic anisotropy. A special focus is on the determination of the Lankford coefficients and on the yield surface under pla...

The present paper proposes a mathematical development of the plasticity and damage approaches to simulate sheet metal forming processes. It focuses on numerical prediction deformation during deep drawing process when crack appears. Anisotropic constitutive equations are proposed. A fully implicit integration coupling is used leads two nonlinear local scalar that solved by Newton’s method. devel...

In the present paper the corrosion properties of structured sheet metals were investigated. The aim of this work is to determinate the influence of the structuring process on the corrosion resistance of sheet metals. For this purpose, these sheets were examined by accelerated tests in corrosion chamber. The investigation was carried out using salt spray test. The experiment was conducted for th...

We present a steady analytical solution of the incompressible Navier–Stokes equation for arbitrary viscosity in an dimension d space. It represents ? 1 dimensional vortex “sheet” with asymmetric profile vorticity as function normal coordinate z. This is related to Hermite polynomials H ? ( z ), which are analytically continued negative fractional index = 1. In 2 dimensions, degenerates constant...

Abstract Composite components combine the benefits of different materials, leading to improved product properties, enhanced resource- and energy efficiency widening spectrum. Draw-forging is unique combination deep-drawing cold forging, where a core material encapsulated within thin sheet metal blank. Previously, basic draw-forging process only allowed covering shaft tip, covered length was lim...