Initial Blank Design of Deep Drawn Single Layer Composite parts Using Inverse Finite Element Method

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Zamanian, Hashem | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43606 (08)
University: Sharif University of Technology
Department: Mechanical Engineering
Advisor(s): Assempour, Ahmad
Abstract:
The inverse finite element method was derived from ideal forming to predict the development blank of sheet forming process and the strain distribution according to the geometry of final product. In this project we present an inverse finite element method to obtain strain and stress distribution in final shape and design initial blank of deep drawing process. The procedure is as follows: First, strain distribution in deep drawn part is estimated by kinematics. Then by using Hill’s anisotropic plasticity and according to the associated plastic flow rule, stress distribution is obtained in deep drawn orthotropic part.Finally, initial blank is designed by considering external forces between the sheet and the tools. The accuracy of the present method is evaluated by comparison with ABAQUS and numerical forward method for a rectangular cup example. The results are in good agreement with the results of ABAQUS and numerical forward method.
Keywords:
Deep Drawing ; Initial Blank Estimation ; Inverse Finite Element Method ; Single Layer Composit

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