This paper presents a new hierarchical multi-scale framework that allows taking into account
evolution of the plastic anisotropy during sheet forming processes. The evolution of …

In the hydraulic bulge tests, dies with both circular and elliptical apertures were used. A
recently proposed methodology was used to determine the equivalent stress—strain curves …

Hydraulic bulge test represents nowadays an important means to obtain higher accuracy on
material characterization. One reason is the possibility of using the obtained biaxial stress …

Hydraulic bulging experiments are performed in order to evaluate the mechanical
parameters of cold rolled steel (DC04) and aluminium alloy (EN AW 6016-T4) sheet …

The procedures for obtaining the stress vs. strain curve from the circular bulge test are
investigated in detail resorting to finite element analysis. Particular attention is given to in …

The crack behavior and bending deformation of pre-cracked sheet are coupled under the
pressure loading. Two theoretical methods (SCMLD and PTELD) were used to compare and …

A novel testing method based on a pneumatic bulging test (PBT) was proposed to measure
the tensile strength of round-disc-shaped miniature specimens at high temperatures. As an …

The hydroforming process is used widely across many industrial fields. High applied
pressure during hydroforming makes it necessary to consider the influence of the through …

In sheet metal forming simulation, a flow curve and a yield criterion are vital requirements for
obtaining reliable numerical results. It is more appropriate to determine a flow curve by using …

The paper describes a new experimental procedure for the determination of the curves
relating the equivalent stress and equivalent strain of sheet metals by means of the hydraulic …