Materials Today: Proceedings 2 (2015) 3770 – 3777 Available online at www.sciencedirect.com ScienceDirect 2214-7853 © 2015 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the conference committee members of the 4th International conference on Materials Processing and Characterization. doi:10.1016/j.matpr.2015.07.181 4th International Conference on Materials Processing and Characterization Experimental and numerical study of formability for EDD steel Nitin Kotkunde a* , Madhava Prasad Tunuguntla a , Abhijeet Arote a , Amit Kumar Gupta a Mechanical Engineering Department, Bits-Pilani Hyderabad Campus,Jawaher Nagar, Hyderabad-500078, Telengana,India. Abstract In this work, Barlat 2000 yield criterion has been developed for EDD steel at room temperature. Uniaxial tensile test experiments were performed to determine the material constants for Baralt 2000 yield criterion. In addition to that, biaxial tensile test and compression test has been performed to determine the additional parameters such as biaxial yield stress (σb) and biaxial anisotropic coefficient (rb) for Barlat 2000 yield criterion. Furthermore, Barlat 2000 yield criterion constants have been implemented in finite element analysis of deep drawing process using DYNAFORM software with LSDYNA solver. In order to validate the finite element analysis results, deep drawing experiment has been performed at room temperature. The thickness distribution and earing profile of cup has been compared. It has been observed that, Barlat 2000 yield criterion is very well suited for thickness distribution prediction however earing prediction is poor compared with experimental results. © 2014 The Authors. Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the conference committee members of the 4th International conference on Materials Processing and Characterization. Keywords: EDD; Barlat 2000 yield criterion; Formability studies; Thickness distribution; Earing profile. 1. Introduction Extra deep drawing (EDD) steels are the most widely used steel material today for automotive applications involving simple and complex components, which require very high formability [1]. Exterior components such as starter end covers, petrol tanks, are made up of deep drawing grade steels. The low carbon steel sheets are also used extensively in enameling applications such as baths, sink units, kitchen ware, cooker and refrigerator panels [2]. Sheet metal forming is a technique by which most body parts are produced in automobile industries. In sheet metal forming, a thin blank sheet is subjected to plastic deformation using forming tools to conform to a designed shape without failure, which is an important aspect of the sheet metal to produce complex sheet metal components. Many factors such as mechanical and metallurgical properties, die and punch geometry, lubrication, sheet thickness, sheet roughness, punch speed, etc. contribute to the success or failure of the stamping to varying degrees in an © 2015 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the conference committee members of the 4th International conference on Materials Processing and Characterization.