in sheet metal forming processes, one-stage production of conical-cylindrical parts with high accuracy is very difficult due to wrinkling and rupturing. hydrodynamic deep drawing assisted by radial pressure is one of the most applicable procedures in sheet hydroforming process on the point of producing conical-cylindrical parts. in this paper, forming pressure path is investigated as one of the...

Many applications require human interaction during the design process. The user is given the ability to alter the graph as the design progresses. Interactive Graph Drawing allows the user to dynamically interact with the drawing. In this paper we discuss features that are essential for an interactive orthogonal graph drawing system. We also describe some possible interactive drawing scenaria, p...

The nature of personal construct theory seems especially suited to research with children, since it is essentially a forward-looking theory that emphasizes change, and all children change as they grow up (Hayhow, Lansdown, Maddick & Ravenette, 1988, p.199). Yet there is relatively little research with children in Personal Construct Psychology. (The bibliography of Chiari (1990) lists only 45 re...

The minimum crossing number problem is among the oldest and most fundamental problems arising in the area of automatic graph drawing. In this paper, eight population-based meta-heuristic algorithms are utilized to tackle the minimum crossing number problem for two special types of graphs, namely complete graphs and complete bipartite graphs. A 2-page book drawing representation is employed for ...

in the present work, the effects of changing punch and the die radius on several process parameters involved in deep drawing of aisi 304 steel have been studied. deep drawing process of a cylindrical cup was simulated and analysed by numerical modeling. the results were compared with those of obtained from a serie of experimental cupping tests. the comparison shows that: maximum drawing force d...

A recent series of papers on single-step drawing of PET film has provided the first systematic examination of the manner in which interactions of the rate of molecular relaxation, the rate of crystallization, and the rate of deformation result in specific polymer microstructures (D.R. Salem, et al., Polymer, 1992, 1994, and 1995, Macromolecules, 1995, Antech’96, Vol II). This information is bei...

Several applications require human interaction during the design process. The user is given the ability to alter the graph as the design progresses. Interactive Graph Drawing gives the user the ability to dynamically interact with the drawing. In this paper we discuss features that are essential for an interactive drawing system. We also describe some possible interactive drawing scenaria and p...

In this paper back-propagation artificial neural network (BPANN) is employed to predict the limiting drawing ratio (LDR) of the deep drawing process. To prepare a training set for BPANN, some finite element simulations were carried out. die and punch radius, die arc radius, friction coefficient, thickness, yield strength of sheet and strain hardening exponent were used as the input data and the...