Paper 205.pdf
Creators: name: Shelar, Amitkumar
name: Ronge, B. P.
name: Seshabhattar, Sridevi
Publisher: name: figshare
Year: 2022
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: Proceedings of 3 rd International Conference on Recent Trends in Engineering &amp; Technology (ICRTET’2014) Organized By: SNJB's Late Sau. K. B. Jain College Of Engineering, Chandwad ISBN No.: 978-93-5107-222-5, Date :28-30 March, 2014 © Elsevier Publication 2014 146 Investigation for the Elimination of Wall Wrinkling in Liquid Diesel Neck Cup Used at the Entrance of Fuel Tank in Automobiles Amitkumar. R. Shelara* , B. P. Rongeb , Sridevi Seshabhattarc aDepartment of ME CAD CAM, PG Student,SVERI,Pandharpur(MH-413304),India bDepartment of CAD CAM,SVERI,Pandharpur(MH-413304),India cDepartment of CAD CAM,SVERI,Pandharpur(MH-413304),India Abstract During the forming process many defects occur which destroys the workability of the material and make it look aesthetically poor. Many defects are occurring in metal forming operations such as earing, wrinkling, thinning, cracks, insufficient stretching etc. Ductility of material is mainly responsible for defects which results in damage of material. Out of several defects the damage of cold rolled steel due to formation of wrinkle was studied thoroughly. In this paper the behaviour of cold rolled steel in deep draw operation of one of the component used in automobile is presented. The damage of cold rolled steel material grade „D‟ in deep drawing operation resulting defect such as wrinkling was observed and studied experimentally and by simulating the results using FE software. It was found that experimental results were in agreement with the FEA result. Keywords-Wrinkling, Deep Drawing, Anisotropy property, Blank Holding Pressure and Draw depth. 1. Introduction In sheet metal forming processes different types of defects are occurring such as rupture, insufficient stretching, thinning etc. and particularly in deep draw metal forming operations are wrinkling, tearing, cracks, thinning. Deep drawing is a process in which raw material i.e. blank is shaped into the cavity provided in the die. The main presses used for deep draw operations are manual, mechanical, hydraulic and pneumatic. Yoshida et al. have conducted a series of work on wrinkle suppression [1]. For the wrinkling analysis purpose hydraulic press of capacity 250 ton was used. The reason of wrinkles at the corner area was studied by Lee et al [2]. In this paper the wrinkle analysis of cup is done which is located where the fuel is inserted in vehicles. The component formed was found with wrinkles, cracks several times. After literature survey it was found that wrinkles and cracks can be eliminated to large extent. There are several parameters which majorly contribute for wrinkle formation such as blank holding pressure, draw depth, anisotropic properties of material, die design, nose radius, geometry and shape of work piece, contact conditions etc. It is difficult to analyze wrinkling initiation and growth while considering all the factors because the effects of the factors are very complex and studies of wrinkling behaviour may a wide scattering of data even for small deviations in factors. In the present study, the mechanism of wrinkling initiation and crack growth in the cylindrical cup deep drawing process was studied. The work was carried out by performing experimentation on single stage hydraulic machine and the results were validated with AUTOFORM software. Wrinkling is not desirable as it destroy the appearance of the component and also while doing the assembly of the part using welding or any other joining operation the strength found to be very weak. Wrinkling mostly occur due to excessive compressive force acting on the sheet metal. Severe wrinkles with high amplitude may damage or destroy dies in case of multistage operations. Plastic wrinkling of two layers sheet was also studied by Morovvati et al [3]. *A. R.Shelar. Tel.:+919850979420. E-mail address: amitkumarshelar@gmail.com, amitkumar_shelar@yahoo.co.in