Deformation behaviour and formability analysis of thin brass sheet: experiments and modelling

ABSTRACT

In this study, the hot deformation and formability behaviour of commercially Brass sheet under uniaxial and multiaxial loading conditions at a wide range of temperatures (room temperature −773 K) have been investigated by experiments and theoretical modelling. Uniaxial tensile test and Nakazima test at different test temperatures have been conducted. Different constitutive models, namely, Johnson-Cook (JC) model, modified Zerilli–Armstrong (m-ZA) model, modified JC model, integrated Johnson Cook and Zerilli–Armstrong (JC-ZA) model, have been used to understand the prediction behaviour of flow stress of Brass. Further anisotropic yield criteria, namely, Hill’48 and Barlat’89 yield functions have been utilised for yield loci prediction. From Nakazima test, the experimental forming limit diagram has been plotted. Other formability parameters, namely, limit dome height, thickness distribution, and strain distribution have been analysed. The theoretical FLD by Marciniak Kuczynski (MK) model. By employing the uniaxial constitutive models, anisotropic yield criteria have been investigated. The predicted MK-FLD coupled with the JC-ZA model and Barlat’89 yield criteria shows good agreement with measured experimental FLD.

KEYWORDS:

• Brass alloy
• uniaxial deformation behaviour
• uniaxial constitutive modelling
• Aniso-tropic yield criteria
• Marciniak Kuczynski model
• forming limit diagram

Data availability statement

Details of supporting the findings of this study are available from the corresponding author on request.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

V Dharam Singh

V Dharam Singh has completed his master's in Advanced Manufacturing Systems and bachelor's in Mechanical Engineering from JNTUH College. His Research Interests are Advanced Manufacturing Systems, Metal Forming Metal Casting and Welding processes respectively.

Gauri Mahalle

Dr. Gauri Mahalle has completed her PhD in the Department of Mechanical Engineering, BITS-Pilani, Hyderabad Campus, India. Her research activities primarily focus on sheet metal forming of Inconel alloy sheets, material behavior, development of different fracture and constitutive models, finite element simulation of different forming operations. She is presently working as a post-doctoral research associate at NFI Bangor University, Bangor Wales, UK.

M Manzoor Hussain

M Manzoor Hussain is working as Professor at Mechanical Engineering Department, Jawaharlal Nehru Technological University Hyderabad-500085, Telangana, India. He is specialized in Production Engineering. Research interests include Production Engineering, Engineering Mechanics, CAD/CAM, and Computing Techniques, PLM and PDM.

Nitin Kotkunde

Dr.Nitin Kotkunde obtained his Ph.D. from BITS-Pilani, Hyderabad Campus in Mechanical Engineering Department, 2015. He is working as an Assistant Professor in the Mechanical Engineering Department, BITS-Pilani, Hyderabad Campus, with 12 years of teaching experience. His current research areas include Sheet Metal Forming, Material Testing and Characterization of Metal, Hot Deformation Behavior of Metals, Material Model Development,and Product Design and Development

Swadesh Kumar Singh

Dr. Swadesh Kumar Singh holds a Master's and Ph. D. from the Indian Institute of Technology (IIT) Delhi India. He received a gold medal for his Bachelor's degree at AMU. He is presently working as a Professor in the Department of Mechanical Engineering at GRIET, Hyderabad, India and Adjunct Professor at Institute for Sustainable Industries & Livable Cities, Victoria University, Melbourne, VIC, Australia. Prior to joining GRIET he has also served as Assistant Executive Engineer in Indian Engineering Services (IES) and also worked with BHEL for a brief period of time.