Finite element simulation of stretch flanging process was carried out in order to investigate the effect of process parameters on maximum thinning (%) in stretch flanging process. Influences of initial flange length, punch die clearance, width of sheet metal blank and blank holding force were investigated on maximum thinning (%). Finite element simulation was done using FEM software package ABA...

In this paper, we show an improved bound and new algorithm for the online square-into-square packing problem. This twodimensional packing problem involves packing an online sequence of squares into a unit square container without any two squares overlapping. The goal is to find the largest area α such that any set of squares with total area α can be packed. We show an algorithm that can pack an...

An efficient method for computing texture features based on dominant local orientation is introduced. The features are computed as a Laplacian pyramid is built. At each level of the Laplacian pyramid, the linear symmetry feature is computed. This feature is anisotropic and estimates the optimal local orientation in the Least Square Error (LSE) sense. It is complex valued and hence consists of t...

In diesem Beitrag präsentieren wir die Artefaktkarte, eine Verbindung aus einem angereicherten Glossar und einer Karte der Arbeitsumgebung. Die Artefaktkarte macht den Kontext der Arbeit unabhängig von der tatsächlichen Arbeitsumgebung verfügbar und das in konkreter Form, situiert und nahezu vollständig. Sie ermöglicht, notwendige Erhebungen zügig und strukturiert Weise durchzuführen, und unter...

and the sixtieth birthday of Dr. Heinrich Meng to whom it owes so much. The editor acknowledges also the stimulating influence by the International Congress held in London in 1948. The majority of the forty-three contributions deals with problems of social psychology and psychiatry; and the rest (in fact the two introductory sections) discuss a few selected problems of psycho-analysis and medic...

There are several method for forming bulk material, such as forging, rolling and extrusion. Every of these methods have advantages and dis-advantages of their selves. Forging process is one of the most common of them that include a die, press and in some case heater with controlling system, and has a special place in automotive, military and aerospace industries due uniformity of the final prod...

The assessment of the influence of the work-hardening of material on the optimum die profile and drawing force  in rod drawing process is the main objective of the present paper. The upper bound solution, based on the assumption of perfect plasticity, has been extended to consider the work-hardening of the material during the rod drawing process through curved dies. Analytical results of drawin...

Strain distribution of Al 1100 was numerically investigated during cyclic expansion extrusion (CEE) process using finite element method (FEM). Die angle, corner fillet radius and die chamber diameter were considered as die parameters and friction factor and number of passes as process parameters. The effects of these parameters were investigated on the effective strain and strain homogeneity in...

Electronic appendices are refereed with the text; however, no attempt is made to impose a uniform editorial style on the electronic appendices.