Deep drawing is a forming process widely used in aerospace, military, automotive, and various industries. One of the essential useful parameters quality deep-drawn products blank holder force (BHF). By controlling BHF during process, formability can be improved it reduce energy. Tearing one most common crucial defects this due to high radial stress cup’s wall, resulting many limitations field. ...

This study investigates the thickness variation behavior of deep drawing conical products under effect different forming parameters such as die wall inclination angle, punch velocity, sheet thickness, and metal type. Two types were used, low carbon (AISI 1008) galvanized steel sheets, 110 mm diameters circular blanks at 0.9 1.2mm formed by tooling set (punch, die, blank holder). The dies angles...

Springback is defined as undesirable shape change that occurs after forming process upon unloading due to the occurrence of elastic recovery part. Aluminum alloy with high content magnesium such A6061 preferred for formability limit be used in automotive industry. However, generally springback turns out a drawback. Many researchers have examined by considering parameters bent angle, die shoulde...

In this paper, the effect of air turbulence intensity on the flame structure in various radii and lengths of a flame holder numerically studied. Finite volume method is used to solve the governing equations. The obtained numerical results using realizable k-ε and β-PDF models show a good agreement with the experimental data. The results show that flame holder with greater lengths yield shorter ...

Chaotic features of the macro-instability (MI) of flow patterns in stirred tanks are studied in this paper. Datasets obtained by measuring the axial component of the fluid velocity and the tangential force affecting the baffles are used. Two geometrically identical, flat-bottomed cylindrical mixing tanks (diameter of 0.3m) stirred with either pitched blade turbine impellers or Rushton turbine i...

Aim: During minimal access surgery an assistant is controlling the laparoscope and surgeon should be free to manipulate instruments. Although the advantages of laparoscopic surgery are well documented, one disadvantage is that, for optimum performance, an experienced camera driver is required who can provide the necessary views for the operating surgeon. There are many drawbacks in human camera...