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  • 标题:Localization Predictions Of The Micropolar Microplane Theory.
  • 本地全文:下载
  • 作者:Guillermo Etse ; Marcela Nieto ; Paul Steinmann
  • 期刊名称:Mecánica Computacional
  • 印刷版ISSN:2591-3522
  • 出版年度:2002
  • 卷号:XXI
  • 期号:8
  • 页码:755-774
  • 出版社:CIMEC-INTEC-CONICET-UNL
  • 摘要:The micropolar microplane theory by Etse, Nieto and Steinmann (2002) [14] is based on
    a reformulation of the classical Cosserat theory within the framework of the microplane
    concept. The resulting constitutive equations and models include available and more precise
    information of the complex microstructure of engineering materials like concrete and
    other composites as compared with the classical smeared crack-based material theories.
    The main aim of this enriched material formulation was the macroscopic modeling and
    description of anisotropic material response behaviors by means of the well-developed microplane
    concept applied within a micropolar continuum setting. To derive the micropolar
    microplane theory a thermodynamically consistent approach was considered whereby the
    main assumption was the integral relation between the macroscopic and the microscopic
    free energy as advocated by Carol, Jirasek and Bazant (2001) [10] and Kuhl, Steinmann
    and Carol (2001) [15]. In this approach the microplane laws were chosen such that the
    macroscopic Clausius-Duhem inequality was fully satisfied. This theoretical framework
    was considered to derive both elastic and elastoplastic micropolar microplane models.
    After refreshing the most relevant equations of the micropolar microplane theory, this paper
    focuses on the evaluation of the localization predictions of this constitutive formulation.
    A comparative analysis with the predictions of the classical micropolar constitutive theory
    is also included.
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