In this work, cold bulge forming of an Aluminium-Magnesium (Al-Mg) sheet with a solid bulging medium is performed experimentally and numerically.  Mechanical properties and thickness variations of Al-Mg sheet are evaluated before and after the forming process.  The results indicated that the Al-Mg sheet has taken the desired shape without necking using the cold bulge forming process.  Also, the...

The operation of applying riffles by local plastic forming on the inner surface a cylindrical shell with help working mandrel wedge protrusions is considered. results computer simulation are presented, and comparison made known reduction corrugation method. A significant decrease in technological force process removal using new method has been established

The ability of metal plastic forming and the mechanism performance of the part are correlated with grain granularity of the metal. Grain growth is a prominent character of the microstructure evolution. It is very helpful for the design of process and die structure to study the mechanism of superpalstic deformation and microstructure evolution of superplastic forming. The microstructure evolutio...

recently, incremental sheet metal forming (ismf) process as one of the new methods in rapid prototyping collection has been considered by researchers. this process is based on a defined path in cnc controller and applies a spherical-head tool that supplies the required pressure for sheet metal forming. despite affirmation of process ability in forming symmetric geometries, some of its aspects s...

Laboratory sheets were prepared from repulped liquid packaging board (LPB) for press-forming experiments and tensile tests to study convertibility mechanical properties of molded pulp material developed the LPB. Maximum forming depth was utilized as a indicator, defect formation in press-formed samples observed with visual analysis. Female mold temperature pressing force altered among parameter...

Forming micro-dimples nearer to the cutting edge on rack face of tungsten carbide inserts will positively influence machinability. However, it is challenging machine perfect micro-dimple dimensions by utilizing available machining techniques. Finite element analysis can be an efficient way observe dimple-texture area density, size, and various shapes inserts' This paper numerically analyses imp...

In this study, the force generated by atmospheric positive and negative corona discharges was investigated using a simulation of wire–cylinder configuration. We provided new insight into discharge introducing nonlinear on charged particles in vicinity wire electrode. To elucidate origin both forces discharges, we performed 2D simulations via COMSOL Multiphysics MATLAB software. It observed that...

forming limit diagram (fld) is an important diagram by which the formability of sheet metals is studied. strain rate is a very effective parameter influencing the fld which is, in turn, influenced by the forming velocity. in this work, forming limit diagram for st14 was investigated both experimentally and numerically. in addition, the effect of forming velocity was studied and the experiments ...

in recent years, in order to reducing die design and manufacturing costs, multi point forming technique has gained an increasing interest because of its high flexibility. in this process, the conventional fixed shape solid die sets are replaced with a pair of opposite matrices of controllable elements. in this paper, the fundamental principles of multi-point forming was described and the possib...

Aluminum and magnesium alloys are of materials for decreasing vehicle weight and consequently reducing fuel consumption. However, forming limitations regarding their low formability at room temperature are found when being manufactured by conventional forming processes. For this reason, development of new forming techniques, such as warm tube hydroforming, is needed to overcome such limitations...