Mean-field constitutive modeling of elasto-plastic composites using two (2) incremental formulations

Azoti, Wiyao, Tchalla, A., Koutsawa, Y., Makradi, A., Rauchs, G., Belouettar, S. and Zahrouni, H. (2013) Mean-field constitutive modeling of elasto-plastic composites using two (2) incremental formulations. Composite Structures, 105. pp. 256-262. ISSN 0263-8223

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Based on scale transition techniques, we aim to build the elasto-plastic behavior of composite materials under loading using two (2) incremental mean-field formulations. Such analysis is carried out by the derivation of effective properties using the Incremental Micromechanics Scheme (IMS) proposed by Vieville (1992, 1994). This scheme is known for its capability to overcome the well-known accuracy restrictions of the Mori-Tanaka (MT) scheme and the Self-Consistent (SC) scheme when a high volume fractions of heterogeneities or/and a high contrast between phases properties is reached. This micromechanics formalism is based on the Eshelby's inclusion concept and the kinematic equation of Dederichs and Zeller (1973). A classical J2 plasticity is implemented that leads to the consistent (algorithmic) tangent operator from the continuum elasto-plastic tangent operator. Hill-type incremental formulation is adopted to compute the non-linear behavior. Numerical results are obtained considering a heterogeneous material with different volume fractions. The predicted results are compared to those obtained using the standard MT and SC schemes and an exact finite element solution. © 2013 Elsevier Ltd.

Item Type: Article
Uncontrolled Keywords: Effective property; Elastoplastic behavior; Finite element solution; Heterogeneous materials; High volume fraction; Incremental formulation; Incremental scheme; Tangent operators, Elastoplasticity; Micromechanics; Volume fraction, Loading
Subjects: Engineering > Mechanical Engineering
Divisions: Faculty of Technology > School of Computer Science
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Depositing User: Wiyao Azoti
Date Deposited: 14 Dec 2015 15:57
Last Modified: 02 Jul 2019 09:10

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