This paper presents an experimental investigation and numerical simulation of micro deep. The objective of this research is to determine the most important factors influencing a drawing process, utilizing the help of a design of experiments and statistical analysis. With these considerations in mind, we have included throughout the book the details of the planning stage of several. This paper presents an experimental investigation and numerical simulation of microdeep. Pdf experimental analysis of process parameters in fluid. The design and control of a deep drawing process depends not only on the workpiece material, but also on the condition at the toolworkpiece interface, the mechanics of plastic deformation and the equipment used. Analysis of deep drawing of sheet metal using the marform process. The objective of this research is to determine the most important factors influencing a drawing process, utilizing the.
Design and analysis of experiments tanujit chakrabortys. Analysis and experiment this paper reports on the initial stages of a combined experimental and finite element analysis. It was observed that the punch force required for deepdrawing increases with anisotropy in the blank sheets. In this paper, a finite element fe model is developed for the 3d numerical simulation of deep drawing process parametric analysis by using abaqusexplicit fea program with the proper material. The most attractive characteristic of this technology is simplicity, and its feasibility for prototype processes and lowvolume production. Bretagne sud, fre cnrs 3744, irdl, f56100 lorient, france bcemmpre, department of mechanical engineering, university of coimbra. Deep drawing dd is one of the sheet metal forming processes widely used in automobile. Analysis of deep drawing of sheet metal using the marform. Figure 1 shows a sketch for drawing a circular cup. With these considerations in mind, we have included throughout the book the details.
The continuum or solid elements, the shell elements and the. The application of the finite element method to the numerical simulation of the deepdrawing process has evolved in a significant way in the course of the last few years. Influence of process parameters on the deep drawing of. This work reports on the initial stages of finite element analysis fea of a deep drawing process. This paper reports on the initial stages of a combined experimental and finite element analysis fea of a deep drawing process. Analysis of punch velocity dependent process window in micro. Deep drawing, springback, finite element analysis, aa5754o. The deep drawing process is a forming process with ongoing interest which will have a major impact on industries in coming years. Experimental analysis can be useful in analyzing the process to determine the process parameters that produce a defect free product, and the analyticalnumerical modeling can be used to model and analyze the process through all stages of deformation. A cuplike cylindrical part, having the depth greater than its diameter, is formed as a result of deep drawing.
This paper intends to approach the deep drawing process of thin walled, mild steel, cylindrical containers, by means of a finite element analysis. In multistage elliptical cup deep drawing processes, kim et al. Analysis of the drawing process is based on the axisymmetric condition. To reduce various defects in deep drawing process it is necessary to control some parameters of deep drawing process. Presently, the conventional deep drawing cdd operation is carried out at room temperature in. Click the select process and material bu on to open the selec on dialog. This thesis friction in deep dra wing considers some aspects of friction on the deep drawing process. Jun 01, 20 deep drawing stationtypes blanking drawing piercing trimming 8. Comparison of thickness between finite element analysis and experiment for the third sample. Deep learning as a tool for increased accuracy and. Analysis of punch velocity dependent process window in. Numerous unconventional deep drawing techniques have recently been implemented that have helped increase the industrial uses of deep drawing. Compressive stress of the hold down plate in the axial direction radial tensile stress compressive hoops stress material thickens due to circumferential shrinking as it moves in on the cup wall. Deep drawing process analysis and experiment free download as pdf file.
Deep drawing provides a great application potential for the manufacturing of parts with complex shapes, even in very small dimensions. Comparative investigation of sheet metal forming processes. The experiment indicates that computer simulation can be helpful for studying the connection between deep drawing process and mould parameters, and the results are beneficial of mould design and analysis of products quality. The computed thickness strain of the membrane analysis, however, shows a wide difference with the experiment.
Process analysis and design in micro deep drawing utilizing a. The objective of this research is to determine the most important factors influencing a drawing process, utilizing the help of a design of experiments and. Still today, this process of analysis and design is an art than science. Parametric analysis of deep drawing process for hemisphere dome. Hani aziz ameen ansys deep drawing process 1 ansys analysis of deep drawing process asst. As a result of the remarkable demands on electronic and other portable compact devices, the need to produce various miniaturized parts, particularly those made from metallic sheet is growing. In the shell analysis, the thickness strain shows good agreement with the experiment.
Analysis and experiment this paper reports on the initial stages of a combined experimental and finite element analysis fea of a deep drawing process. Experimental analysis of process parameters in fluid assisted blank holding system in deep drawing process for al 1050 conference paper pdf available december 2016 with 60 reads how we. The process requires sheet metal with a high thickness ratio, to avoid wrinkling. Circumferential tensile strain radial tensile strain ironing. Finite element simulation of multistage deep drawing. Finite element simulation of single stage deep drawing. Because a part wrinkled during the deep drawing process will not be accepted and most likely become as scrap. Deep drawing process analysis and experiment experiment. However, this process is carried out usually under laboratory conditions with a relatively low punch velocity, for example 1 mms. Concerning the so called size effects micro deep drawing is widely investigated. Deep drawing deep drawing deep drawing is defined as a. Finite element simulation of multistage deep drawing is performed in abaqus software, version 691. This paper deals with the deep drawing of metal cups using the marform process. Ldr value, drawing force in warm deep drawing process of aisi stainless steel sheet at different temperatures ranging from room temperature to 300oc.
Flexible forming technology provides significant application potential in the manufacturing of complex shaped components even at miniaturized levels. Detailed experimental and numerical analysis of a cylindrical cup deep drawing. It was observed that the punch force required for deep drawing increases with anisotropy in the blank sheets. The process was simulated by finite element analysis using a commercial implicit fem package abaqusstandard to establish the base for our following analysis. Metal forming processes indian institute of technology. Blankingblanking is the process ofcutting the initial sheet coil stockinto round or shaped flatsrequired for deep drawing. The deep drawing process involves a great deal of sliding of the sheet material along the tools. Finite element analysis of deep drawing and springback failure criteria two types of failures were followed through the modeling. This technology is characterized by its simplicity, versatility of process and feasibility of prototyping. In recent years, deep learning techniques have quickly become the state of the art in computer. Presented contribution deals with force parameters research drawing and blankholding in deepdrawing process of flat bottomed cylindrical cup. Applying a punch with microridges in multistage deep drawing.
Prediction of the forming results, determination of the thickness distribution and the thinning of the sheet metal blank will decrease the production cost through saving material and production time. Simulation of the effect of mould parameters on the. The analytical model of the process is presented initially, followed by the finite element simulations using abaqus software. Effects of various parameters in deep drawing process over.
Deep drawing is one of the most widely used processes in sheet metal forming. Analysis of an axisymmetric deep drawn part forming using. In this paper, the deep drawing process of an automobile panel in order to select the appro. In deep drawing process the main objectives are to obtain defect less or minimum defects in product. The main purpose of this study is to clarify the decisive characteristics of micro deep drawing of. A deep drawing rig was designed and built for this. Aug 12, 2016 as a promising technology, sheet metal flexible forming processes have been increasingly employed for different industrial applications. Conventional deep drawing conventional deep drawing can be achieved without a blank holder as indicated in figure 1, or with a blank holder as shown in figure 2 malinin 1975. Helios banovici radnicka 101, 75290 banovici bosnia and herzegovina abstract in this paper, effect of drawbead location on bead restraining force in the process of deep drawing was investigated. Deep drawing is a process for shaping flat sheets into cupshaped articles without fracture or excessive localized thinning.
The main reason to carry out such a process is taking the advantages of different. In other words, in order for manufacturing companies to stay in competition, they are required to develop new and innovative fabricating processes to produce micro components with more complex features. The application of the finite element method to the numerical simulation of the deep drawing process has evolved in a significant way in the course of the last few years. In this operation, forming of a flat metal sheet into a hollow or concave shape like a cup, is performed by stretching the metal in some regions. We also believe that learning about design and analysis of experiments is best achieved by the planning, running, and analyzing of a simple experiment. Finite elements in analysis and design 43 2007 10621067. Analysis of original drawing process the existing forming process consists of 10 steps, that is, 7step, 2step and 1step drawing to form zone i, zone ii and zone iii, respectively. For deep drawing without a blankholder thickness ratio should be at least 3%.
Specifically, if the depth of the item created is equal to or greater than its radius, then the. The factors affect the deep drawing process may be. Scribd is the worlds largest social reading and publishing site. In deep drawing, the computed loads of both the membrane analysis and the shell analysis are generally in good agreement with the experiment. A copy of the deep drawing analysis is made and placed on a new tab.
This article focuses on the current status and potential of future development of technology in the deep drawing process. These processes include hydroforming, hydromechanical deep drawing, aquadrawing, hydraulic deep drawing, the guerin process and the marform process. Yang finite element analysis of elliptic cup deep drawing of magnesium alloy sheet, journal of waleed khalid jawad, investigation of contact interface between the punch and blank in deep drawing process, eng. Finite element analysis has been used to understand deformation behavior and. Forming abstract in this paper, the effects of several parameters on the deep drawing process of laminated sheets are comprehensively studied. Deep drawing process of steelbrass laminated sheets. Comparative investigation of sheet metal forming processes by. The calculated values by analytical methods are compared with those of the experimental and fe simulations results for its accuracy of prediction. Under certain conditions, this sliding will cause friction between the tools and the material. Metal forming processes indian institute of technology guwahati. Pdf analysis of deep drawing process for hemispherical products. The depth of the cup created should not exceed the diameter of the blank sheet dieter, 1988 and the thinning should be kept bellow 20% of the original thickness t.
The strength difference and the initial anisotropy induce uneven. Prediction of wrinkling is a very important process for a deep drawing operation. Using this technique, higher limiting drawing ratios can be obtained compared with the conventional deep drawing process. There are mainly two methods of deep drawing analysis. The effect of dieblank holder and punch radiuses on limit drawing. Detailed experimental and numerical analysis of a cylindrical. Applying a punch with microridges in multistage deep drawing processes. As a promising technology, sheet metal flexible forming processes have been increasingly employed for different industrial applications. Sheet metal forming is a complex process involving geometric, material and. Rightclick the original analysis tab and select copy rightclick again and select paste. The deep drawing process is a forming process which occurs under a combination of tensile and compressive conditions.
The process is considered deep drawing when the depth of the drawn part exceeds its diameter. The aim of this study is to investigate the effect of radius and angle variables on drawability in the deepdrawing process and to obtain useful data. Prediction of wrinkling is a very important process for a deepdrawing operation. Effect of mechanical properties on deep drawing formability. Anshul bindal econtent for aktu manufacturing technology1 duration. Deep drawing is a sheet metal forming process that involves complex material flow and force distributions. The deep drawing process, as one of the most applicable sheet metal forming process, is widely used in many industries. Optimization of process parameters in deep drawing. Theoretical and experimental analysis of deep drawing. Investigation of micromilli flexible deep drawing process. It is thus a shape transformation process with material retention. Apart from its use in many other sectors, it is applied in the automotive industry for the manufacturing of car body parts.
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