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A multi-scale modeling scheme for damage analysis of composite structures based on the High-Fidelity Generalized Method of Cells

机译：基于高保真单元格的复合材料损伤分析的多尺度建模方案

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摘要

This paper presents a description of a multi-scale method to investigate the failure behaviors and damage evolution of composite laminates reinforced with unidirectional fibers. The proposed approach is based on the microscopic mechanical theory and pre-processing function of the ANSYS/LS-DYNA software. At micro-scale, the High-Fidelity Generalized Method of Cells (HFGMC) is employed to establish the microscopic model, which can be used to acquire the microscopic stress distributions in the representative volume element (RVE). Moreover, a viscoplastic constitutive model is employed to describe the nonlinear behaviors of matrix materials. At macroscale, each integration point in elements is employed to investigate the damage evolution for each lamina. In order to validate the proposed method, the numerical results of failure evolution path and stress-strain responses of the composite laminates are compared with experimental data. A good consistency between theoretical results and experimental data can be found. On this basis, the failure evolution path for each lamina is further investigated. The numerical results revealed that the crack firstly appeared in the 90 degrees lamina. With the further increasing of external loading, the crack will accumulate along with the layer direction for -45 degrees lamina, 45 degrees lamina and 90 degrees lamina.
机译：本文介绍了一种多尺度方法，以研究单向纤维增强复合材料层压板的破坏行为和损伤演化。所提出的方法基于微观力学理论和ANSYS / LS-DYNA软件的预处理功能。在微观尺度上，采用高保真通用细胞方法（HFGMC）建立微观模型，该模型可用于获取代表体积元素（RVE）中的微观应力分布。此外，采用粘塑性本构模型描述基体材料的非线性行为。在宏观上，采用元素中的每个整合点来研究每个薄片的损伤演变。为了验证该方法的有效性，将复合材料层合板的失效演化路径和应力-应变响应的数值结果与实验数据进行了比较。理论结果与实验数据之间具有良好的一致性。在此基础上，进一步研究了每个薄板的失效演化路径。数值结果表明，裂纹首先出现在90度层板中。随着外部载荷的进一步增加，裂纹将沿着-45度层，45度层和90度层的层方向累积。

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  • 来源
    《Composite Structures》 |2018年第12期|42-53|共12页
  • 作者

    Ye Junjie; Chu Chenchen; Cai Heng; Wang Yongkun; Qiao Xiaojun; Zhai Zhi; Chen Xuefeng;

  • 作者单位

    Xidian Univ, Res Ctr Appl Mech, Key Lab, Minist Educ Elect Equipment Struct Design, Xian 710071, Shaanxi, Peoples R China;

    Xidian Univ, Res Ctr Appl Mech, Key Lab, Minist Educ Elect Equipment Struct Design, Xian 710071, Shaanxi, Peoples R China;

    Xidian Univ, Res Ctr Appl Mech, Key Lab, Minist Educ Elect Equipment Struct Design, Xian 710071, Shaanxi, Peoples R China;

    Xidian Univ, Res Ctr Appl Mech, Key Lab, Minist Educ Elect Equipment Struct Design, Xian 710071, Shaanxi, Peoples R China;

    Taiyuan Heavy Ind Grp Co LTD, Technol Ctr, Taiyuan 030024, Shanxi, Peoples R China;

    Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, State Key Lab Mfg Syst Engn, Xian 710049, Shaanxi, Peoples R China;

  • 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

    Damage evolution; Multi-scale; Composite laminates; Nonlinear behaviors;

    机译：损伤演化;多尺度;复合层合板;非线性行为;

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