Optimization and Modeling of Angular Deep Drawing Process for Square Cups

Çelik

Journal of Intelligent &Amp; Fuzzy Systems

2013

Self Cite

Deep drawing process is one of the widely used methods in sheet-metal forming. With the deep drawing method, products of various geometrical shapes such as saucepans, tubes, perfume and soft drink cans can be obtained easily. Therefore, the optimization of the deep drawing process is very important for the industry. In conventional deep drawing method, no angle is given to the surfaces of die and pressure plate. Both die and pressure plate and the geometrical shape of die and punch have a significant effect on drawing ratio. In this study, the effect of angles and radii on the drawing ratio of blank holder and punch forces were theoretically calculated and experimentally investigated in order to deep drawing the DIN EN 10130-91 sheet by giving angles on the die/blank holder surfaces and radii on the punch edge surfaces. In addition, the data obtained from the experimental study were calculated with the Fuzzy Logic Model and the optimum and the lowest drawing ratios for the die and punch radius as well as the die/blank holder were determined. The optimum drawing ratio in the experimental study was obtained as ␤ = 2.3, when the die and punch radius was R = 10 mm and the die/blank holder angle was = 12.5 • , and as ␤ = 2.2 in the Fuzzy Logic model. The lowest drawing ratio was obtained as ␤ = 1.8 when the blank holder angle was = 0 • in the experimental study and as ␤ = 1.82 in the Fuzzy Logic model.

Section: Discussionmentioning

confidence: 92%

A fuzzy logic model to determine the effects of die/blank holder angle and punch radius on drawing ratio in angular deep drawing dies

Çelik

Journal of Intelligent &Amp; Fuzzy Systems

2013

Self Cite

Materials and Manufacturing Processes

“…M. Raei et al (2012) have outlined the effect of Accumulative Roll Bonding on aluminum sheets SPD [15]. C. Özek et al (2011) have studied the effects of punch tool linear size on the punching force for a deep drawing process [17]. F. Djavanroodi et al (2011) have introduced a new punch shape for deep drawing process improvement [18].…”

Section: Introductionmentioning

confidence: 99%

“…1c and Fig. 2) have applications to such metal forming processes as die forging [30][31], forged pieces forging, cold multistage forming [17][18]20], sheet-metal forming, punching, backward extrusion [10-11, 14, 19, 21] and improved SPD techniques [3][4]22].…”

Section: Introductionmentioning

confidence: 99%

Effect of 2θ-Punch Shape on Material Waste during ECAE through a 2θ-Die

Perig

Tarasov

Zhbankov

et al. 2014

This article is focused on the improvement of metal forming die tooling for Equal Channel Angular Extrusion (ECAE) processes through non-rectangular 2θ-dies of classical Segal geometry. The technological appropriateness of work piece deformation through 2θ-dies using inclined oblique 2θ-punches has been evaluated with an introduction of physical simulation techniques. It has been shown experimentally that for

“…The latest researches on the deep drawing process and its effective parameters include the following: Padmanabhan, et al [2] studied the significance of three important process variables namely, die radius, blank holder force and friction coefficient on the deep drawing characteristics of a stainless steel axi-symmetric cup. An investigation on the limit drawing ratio, punch force and minimum wall thickness based on the parameter full factorial experimentation in the optimization of deep drawing process was performed by Özek and Ünal [3]. Arab and Nazaryan [4] studied the deep drawing of circular blanks in axi-symmetric cylindrical cups forming using numerical modeling.…”

Section: Introductionmentioning

confidence: 99%

An Investigation into the Deep Drawing of Fiber-Metal Laminates based on Glass Fiber Reinforced Polypropylene

Rajabi

Kadkhodayan

2014

IJE

Fiber-metal laminates (FMLs) are new type of composite materials which could improve defects of traditional composites in ductility, formability, impact and damage tolerance. Drawing behavior of a thermoplastic based FML consisting of glass-fiber reinforced polypropylene laminate as the core and aluminum AA1200-O as skin layers was investigated. The effects of process variables consisting of blank-holder force, temperature, blank diameter and blank thickness on the forming behavior of the FML were studied. To reduce the number of experiments and investigate process variables on maximum drawing force and wrinkling of specimens, design of experiments was used. The experimental results were indicated that the general effects of blank-holder force on the failure mode in FMLs and the effects of blank diameter and blank thickness of a FML in deep drawing was similar to custom metals. Furthermore, results demonstrated that a high interaction between temperature and blank-holder force was required to remove the wrinkling. Engineering constants of GFRP were obtained using Timoshenko's beam theory. Numerical simulations were performed by the finite element software, ABAQUS, and a good agreement was observed between the numerical and experimental data.