Drawing or forming is a process normally used to achieve a required component form from a metal blank by applying a punch which radially draws the blank into the die by a mechanical or hydraulic action or combining both. When the component is drawn for more depth than the diameter, it is usually seen as deep drawing, which involves complicated states of material deformation. Due to the radial d...

The effects of input parameters on the square-cup deep-drawing process for a two-layer aluminum/steel laminated sheet were investigated. Each layer was 0.7 mm thick, and the input parameters covered in the investigation were punch nose radius (PR), die shoulder radius (DR), the clearance between a punch and die (CPD), blank holder force (BHF), and layer arrangement (LA). The effects of the inpu...

In the present study, the finite element analysis of the hot deep drawing process of commercially pure (CP) titanium has been performed without the blank holder in order to investigate the influence of temperature (T), die radius (Rd) and blank diameter (D) on the maximum punch force (Fp) and minimum thickness of the blank (t). Tensile tests were first conducted to extract...

We study orthogonal drawings of 4-planar graphs on cylinders—so called ortho-radial drawings. Equivalently these can be regarded as drawings on an ortho-radial grid formed by concentric circles and rays from the center of these circles but excluding the center itself. Ortho-radial drawings form a proper extension of orthogonal drawings in the plane. We present ortho-radial representations as a ...

This thesis deals with the rectilinear crossing minimization problem, which is NP-hard [BD93]. More precisely, we propose a heuristic for computing a straight-line drawing of a general graph G which realizes a small rectilinear crossing number. Inspired by Gutwenger et al. [GMW05], we pursue an approach which extracts a planar subgraph that includes as many edges of G as possible and iterativel...

Anisotropic behavior is a key characteristic for understanding eccentricity in tubes. In this paper, the effect of using tilted die during tube drawing on eccentricity, texture, dislocation density, and mechanical properties shown. Copper tubes were drawn with ±5° two passes. The increase or decrease can be controlled by controlling angle die. Two types textures have been developed drawing, nam...