De-coupled multi-scale analyses of fiber-reinforced composites by elastic-creep-damage combined model

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Other Title
  • 弾塑性・クリープ・損傷複合モデルによる繊維強化プラスチックの分離型マルチスケール解析

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Description

The numerical study is made to illustrate the applicability of the method of decoupled multi-scale analysis to the micro-macro evaluation of the mechanical behavior of carbon-fiber-reinforced plastics (CFRP) that exhibit inelastic deformations and internal damage of the matrix material. During the course of this illustration, it is confirmed that the reliability of the decoupled method can be guaranteed if the macroscopic constitutive model is introduced so as to inherit the microscopic material behavior. To this end, with reference to the results of the numerical material testing on the periodic microstructures (unit cells) of CFRP, we propose an anisotropic elasto-plastic-creep-damage combined constitutive model to represent the macroscopic material behavior and demonstrate the characteristics of the inelastic deformations that resemble the material behavior assumed for plastics at micro-scale. With the identified macroscopic material parameters, the macroscopic structural analysis, which is followed by the localization analysis consistently, can be an actual proof of the utility value of the decoupled method in practice.

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Details 詳細情報について

  • CRID
    1390001204472166912
  • NII Article ID
    130004851527
  • DOI
    10.11421/jsces.2014.20140004
  • ISSN
    13478826
    13449443
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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