Modeling the powder compaction process using the finite element method and inverse optimization

Hrairi, Meftah and Chtourou, Hedi and Gakwaya, Augustin and Guillot, Michel (2011) Modeling the powder compaction process using the finite element method and inverse optimization. The International Journal of Advanced Manufacturing Technology, 56 (5-8). pp. 631-647. ISSN 0268-3768

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Abstract

This paper focuses on studying and adapting modeling techniques using the finite element method to simulate the rigid die compaction of metal powders. First, it presents the implementation of the cap constitutive model into ABAQUS FE software using the closest point projection algorithm. Then, an inverse modeling procedure was proposed to alleviate the problems raised by the interpretation of the experimental tests and to more accurately determine the material parameters. The objective function is formed, based on the discrepancy in density data between the numerical model prediction and the experiment. Minimization of the objective function with respect to the material parameters was performed using an in-house optimization software shell built on a modified Levenberg–Marquardt method. Thus, an integrated simulation module consisting of an inverse optimization method and a finite element method was developed for modeling the powder compaction process as a whole. The simulation and identification module developed was applied to simulate the compaction of some industrial parts. The results reveal that the maximum absolute error between densities is 2.3%. It corresponds to the precision of the experimental method.

Item Type:	Article (Journal)
Additional Information:	4980/1917
Uncontrolled Keywords:	cap constitutive model,finite element, computational algorithm
Subjects:	T Technology > TJ Mechanical engineering and machinery
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Prof. Dr. Meftah Hrairi
Date Deposited:	13 Sep 2011 15:34
Last Modified:	21 Jun 2013 16:41
URI:	http://irep.iium.edu.my/id/eprint/1917

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