Abstract This study reports on ultra-high temperature tensile tests (1300–1480 °C) performed dual-phase (DP) advanced high-strength steels utilizing a Gleeble 3500 thermo-mechanical simulator. The thermomechanical results of both as-cast (AC) and transfer-bar (TB) material is presented, as well three different sample geometries, to better comprehend the effect distribution stress localization r...

Dual phase steels are largely used to form automotive structural parts by deep drawing involving complex loading paths, which influence the material mechanical behavior and formability, as well subsequent service life. The aim of this paper is investigate calibration a strain path change model from an experimental database simple shear tests. enhanced Homogeneous Anisotropic Hardening (e-HAH) a...

Accurate sheet metal simulation often requires advanced strain-path dependent material models, in order to predict the response under complex loading conditions, including monotonic, reverse and orthogonal paths. More more flexible models imply higher costs terms of parameter identification, computer implementation time, robust comparison is compromised by inconsistent predictions monotonic loa...

The most prominent feature of sheet material forming process is an elastic recovery phenomenon during unloading which leads to springback and side wall curl. Therefore evaluation of springback and side wall curl is mandatory for production of precise products. In this paper, the effects of some parameters such as friction coefficient, sheet thickness, yield strength of sheet and blank-holder fo...

Abstract A plane-strain-tension stress state leads to a minimum in ductility most micro-mechanical and phenomenological fracture models as well Forming Limit Curves. Hence, this plays crucial role many applications reliable measurement of the strain under plane tension is particular importance when calibrating modern initiation models. Recently, new experimental technique has been proposed for ...

Strain path transition is a common phenomenon during continuous stamping operations of sheet metal and can potentially alter the forming limit material. Enabling strain change in single experiment key challenge faced by several researchers. To understand effect on material limits, detailed characterisation needed where deformed while changed continuously. In this work, test method was developed...

Abstract In recent years, the demand for a reduction in pollutant emission has become extremely important vehicle industry. It can be achieved through fuel consumption reduction, which is direct function of vehicle’s weight. nowadays weight widely controlled by use advanced- and ultra-high strength steels (AHSS UHSS) body construction. With application such steel sheets as chassis elements, cra...

In real crash cases, simple bending behavior is not common. this case, using the three-point test to examine provides a closer simulation in terms of representation structure under loading. It seen literature that products with tube sections are generally used as door im-pact beams. On other hand, when examining developed high strength steels, it studies on profiles only evaluated hydroforming....