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首页> 外文期刊>Composite Structures >Material parameter identification of the elementary ply damage mesomodel using virtual micro-mechanical tests of a carbon fiber epoxy system
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Material parameter identification of the elementary ply damage mesomodel using virtual micro-mechanical tests of a carbon fiber epoxy system

机译：使用碳纤维环氧树脂系统的虚拟微机械测试，确定基本层损伤中观模型的材料参数

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摘要

A general multiscale hierarchical framework is proposed to identify the material parameters of a mesoscale model using numerical simulations based on virtual micro-mechanical tests. The identification of the material parameters is usually done with several experiments on different laminates. These experiments are replaced by virtual tests on a microscale finite element model with the same load conditions than the real experiments. The microscale model represents the unidirectional ply geometry based on its constituents, fibers and matrix, with their corresponding properties and the damage behavior of the matrix and interface between them. Under the defined load conditions, the homogenized stress-strain behavior of the laminates is obtained and then, the constitutive model parameters of the ply damage mesomodel are identified. As an example, the proposed framework is applied to identify the material parameters of the elementary ply damage mesomodel developed at LMT-Cachan. It is shown that, when the materials, geometry and load conditions are correctly defined in the micromodel, the real experiments can be replaced by virtual tests. As a result, the amount of experiments can be reduced saving costs and time. In addition, further studies can use the proposed methodology based on virtual micro-mechanical tests to improve the current mesoscale models. (C) 2017 Elsevier Ltd. All rights reserved.
机译：提出了一种通用的多尺度分层框架，以基于虚拟微机械测试的数值模拟来识别中尺度模型的材料参数。通常在不同的层压板上进行几次实验来确定材料参数。这些实验被微尺度有限元模型上的虚拟测试所替代，并且具有与真实实验相同的载荷条件。微观模型基于其成分，纤维和基质，其相应的特性以及基质和它们之间的界面的破坏行为来表示单向帘布层的几何形状。在定义的载荷条件下，获得了层压材料的均质应力-应变行为，然后，确定了层板损伤细观模型的本构模型参数。例如，所提出的框架可用于识别在LMT-Cachan开发的基本帘布层损伤中观模型的材料参数。结果表明，当在微观模型中正确定义了材料，几何形状和载荷条件时，可以用虚拟测试代替实际的实验。结果，可以减少实验量，从而节省成本和时间。此外，进一步的研究可以使用基于虚拟微机械测试的建议方法来改进当前的中尺度模型。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Composite Structures》 |2017年第12期|391-404|共14页
  • 作者

    Garoz D.; Gilabert F. A.; Sevenois R. D. B.; Spronk S. W. F.; Van Paepegem W.;

  • 作者单位

    Univ Ghent, Dept Mat Text & Chem Engn MaTCh, Tech Lane,Ghent Sci Pk,Campus A, B-9052 Ghent, Belgium|SIM Vzw, Technol Pk 935, B-9052 Ghent, Belgium;

    Univ Ghent, Dept Mat Text & Chem Engn MaTCh, Tech Lane,Ghent Sci Pk,Campus A, B-9052 Ghent, Belgium|SIM Vzw, Technol Pk 935, B-9052 Ghent, Belgium;

    Univ Ghent, Dept Mat Text & Chem Engn MaTCh, Tech Lane,Ghent Sci Pk,Campus A, B-9052 Ghent, Belgium|SIM Vzw, Technol Pk 935, B-9052 Ghent, Belgium;

    Univ Ghent, Dept Mat Text & Chem Engn MaTCh, Tech Lane,Ghent Sci Pk,Campus A, B-9052 Ghent, Belgium|SIM Vzw, Technol Pk 935, B-9052 Ghent, Belgium;

    Univ Ghent, Dept Mat Text & Chem Engn MaTCh, Tech Lane,Ghent Sci Pk,Campus A, B-9052 Ghent, Belgium;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Multiscale modeling; Micro-mechanics; Virtual tests; Unidirectional ply; Damage mesomodel; Finite element method;

    机译：多尺度建模;微观力学;虚拟测试;单向层;损伤细观模型;有限元法;

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