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...

In this paper the eccentric forward extrusion of sections has been simulated and analyzed using FEM Abaqus-explicit. The results have been compared to those obtained from upper bound theorem and experimental works. Close agreements was observed between the FEM and experimental work and as compared with the upper bound data more realistic and better predictions were made by the authors’ method. ...

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.

This paper studied the deformation mechanisms of sheet metals stamped by rigid punches and deformable dies. Emphasis was placed on the development of elastic plastic zones in the sheet workpieces, on the functions of the die parameters and on their correlations with spring-back. It was found that the reduction of spring-back was due mainly to the interface interaction offered by the dies. The p...

In the game of Penney Ante two players take turns publicly selecting two distinct words of length n using letters from an alphabet Ω of size q. They roll a fair q sided die having sides labelled with the elements of Ω until the last n tosses agree with one player’s word, and that player is declared the winner. For n ≥ 3 the second player has a strategy which guarantees strictly better than even...