In order to determine the forming force in deep drawing and backward extrusion
processes (on Al 99.5F7 specimens) the analytical, numerical and stochastic modeling and analysis
of forming force on the basis of the Box-Wilson’s multi factorial experimental designs by use of
rotatable experimental design were carried out. The goal of the paper is to predict the force in these
different forming processes giving identical parts by means of different modeling approaches. This
study will seek to compare the results of these modeling solutions with experimental results serving
to check the correction and the verification of analytic, stochastic and numerically obtained results.
Also, the scope of the present paper is to evaluate different parameters affecting these processes and
to examine some experimental procedures in laboratory scale for the listed material in order to give
more useful information in numerical and stochastic computations and also, to define the
correlation among the parameters of these processes in order to improve the existing one and to
raise it to a higher techno economic level. The increasing tendency for industrial parts cost
reduction, quality improvement, materials savings, and the shortening of design and manufacturing
time is more focused on this way of analysis of processes. These investigations are a basis for
general conclusions about the forming force and they have a direct application in the projecting of
these processes, tools and forming systems.
