A Study on the Constitutive Equation Effects in the Fracture Initiation of Aa5450 Sheets

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2019

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Pleiades journals

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Manufacturing Engineering
(2003)
Opened in 2003 with the aim to graduate experts in the field of machine-production, our Department is among the firsts in our country to offer education in English. The Manufacturing Engineering program focuses on the manufacturing technologies that shape materials from raw materials to final products by means of analytical, experimental and numerical modeling methods. First Manufacturing Engineering Program to be engineered by Müdek, our department aims to graduate creative and innovative Manufacturing Engineers that are knowledgeable in the current technology, and are able to use production resources in an effective and sustainable way that never disregards environmental facts. As the first Department to implement the Cooperative Education Program at Atılım University in coordination with institutions from the industry, the Manufacturing Engineering offers a practice-oriented approach in education with its laboratory infrastructure and research opportunities. The curriculum at our department is supported by current engineering software, and catered to creating engineers equipped to meet the needs of the production industry.

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Determination of the fracture initiation in the sheet metal forming applications can be achieved successfully using ductile fracture criteria (DFCs) and finite element codes together. In this study three different uncoupled, energy based ductile fracture criteria have been employed to predict the onset of the fracture in the AA5450 aluminum alloy sheets. Also, two different constitutive models namely, isotropic von-Mises and anisotropic Hill, have been implemented to the finite element code ABAQUS through VUMAT subroutine to investigate the effect of constitutive equations on the applicability of the utilized DFCs. It was shown that the constitutive model has significant influence on the estimation of the time and place of the fracture initiation in the sheets. © Springer Nature Singapore Pte Ltd. 2019.

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Constitutive equations, Ductile fracture, FLCF

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Lecture Notes in Mechanical Engineering -- 7th International Conference on Fracture Fatigue and Wear, FFW 2018 -- 9 July 2018 through 10 July 2018 -- Ghent -- 227259

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Start Page

78

End Page

83

URI

https://doi.org/10.1007/978-981-13-0411-8_8
 https://hdl.handle.net/20.500.14411/3943

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Scopus