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Damage onset on tow-placed variable stiffness composite laminates

机译：拖曳放置的可变刚度复合材料层压板的破损开始

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摘要

Deflection and damage onset of variable stiffness composite laminated (VSCL) rectangular plates with curvilinear fibres, under static and dynamic loads, are investigated. The VSCLs here studied are characterized by the fact that, in each ply, the fibre-orientation angle changes linearly with respect to the horizontal coordinate. A recently developed p-version finite element, which follows third-order shear deformation theory (TSDT), is employed. Large deflections are considered, hence, the analysis is in the geometrically non-linear regime. To predict damage onset, Tsai-Wu criterion and an associated damage onset index, described in this paper as a safety factor, are used. It is shown that geometrical non-linearity affects stresses and the location of damage onset. VSCL and CSCL (constant stiffness composite laminated) plates subjected to static, dynamic, and impact loads, are compared.
机译：研究了在静态和动态载荷下，具有曲线纤维的可变刚度复合层压（VSCL）矩形板的挠曲和损伤开始。此处研究的VSCL的特征在于，在每一层中，纤维取向角相对于水平坐标呈线性变化。采用了最新开发的遵循三阶剪切变形理论（TSDT）的p版本有限元。考虑到较大的挠度，因此分析是在几何非线性范围内进行的。为了预测损伤发作，使用了本文中描述为安全因素的Tsai-Wu准则和相关的损伤发作指数。结果表明，几何非线性影响应力和损伤开始的位置。比较了承受静态，动态和冲击载荷的VSCL和CSCL（恒定刚度复合层压板）板。

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  • 来源
    《Composite Structures》 |2014年第7期|419-428|共10页
  • 作者

    Hamed Akhavan; Pedro Ribeiro; Marcelo F.S.F. de Moura;

  • 作者单位

    DEMec, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;

    DEMec, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;

    DEMec/INEGI, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal;

  • 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

    Laminate; Curvilinear fibre; Non-linear vibration; Damage onset;

    机译：层压板曲线纤维非线性振动;损伤发作;

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