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Extension-shear coupled laminates with immunity to hygro-thermal shearing distortion

机译:抗湿热剪切变形的拉伸剪切耦合层压板

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摘要

Material-independent necessary and sufficient conditions are derived for extension-shear coupled laminate with immunity to hygro-thermal shearing distortion (HTSD) using classical lamination theory. It is proven that no standard form of extension-shear coupled laminate with immunity to HTSD exists. A survey is performed to identify free form of extension-shear coupled laminate with immunity to HTSD that produce maximum extension-shear coupling. This is achieved through a constrained optimization routine, where the constraints are the material-independent necessary and sufficient conditions for laminates with immunity to HTSD. Results are presented for the symmetric laminates that consist of 8-14 plies. Comparisons are made on hygrothermal behavior and buckling strength of extension-shear coupled laminates with and with immunity to HTSD. The robustness of the extension-shear coupled laminates with immunity to HTSD is verified by using Monte Carlo simulation for laminates with fiber orientation that slightly deviates from the theoretically designed direction. (C) 2014 Elsevier Ltd. All rights reserved.
机译:使用经典的层压理论,得出了与剪切剪切力耦合的层压材料的材料无关的必要条件和充分条件,该层压材料具有抗湿热剪切变形(HTSD)的能力。事实证明,不存在抗HTSD的延伸剪切耦合层压板的标准形式。进行调查以识别自由形式的具有HTSD免疫力的延伸剪切耦合层合板,从而产生最大的延伸剪切耦合。这是通过有约束的优化程序来实现的,其中约束条件是与材料无关的,对于具有HTSD免疫力的层压板的必要和充分条件。给出了由8-14层组成的对称层压板的结果。对具有HTSD和对HTSD具有抗扰性的延伸-剪切耦合层压材料的湿热行为和屈曲强度进行了比较。通过对纤维取向的层压材料使用蒙特卡罗模拟,可以验证其对HTSD的抗剪性。 (C)2014 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Composite Structures》 |2015年第5期|401-407|共7页
  • 作者

    Li Jin; Li Daokui;

  • 作者单位

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, Peoples R China;

    Natl Univ Def Technol, Coll Aerosp Sci & Engn, Changsha 410073, Hunan, 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

    Laminates; Thermomechanical; Laminate mechanics;

    机译:层压板;热机械;层压板力学;

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