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Hygrothermal effects on multilayered composite plates using a refined higher order theory

机译：使用改进的高阶理论对多层复合板上的湿热效应

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摘要

A four-node quadrilateral plate element based on the global-local higher order theory (GLHOT) is proposed to study the response of laminated composite plates due to a variation in temperature and moisture concentrations. C~0 and C~1 continuities are required in the transverse displacement functions as the first and the second derivatives are involved in the computation of the strain components in GLHOT [Int J Mech Sci, 2007; 49:1276-1288]. In this paper, a displacement function satisfying C~0 continuity is constructed by using the refined element method, and the discrete Kirchhoff quadrilateral thin plate element DKQ is employed for satisfying the requirement of C~1 continuity. The effects of temperature and moisture concentrations on the material properties and the hygrothermal response of multilayered plates are studied, in contrast to most of the previous investigations in which the material properties are assumed to be independent of temperature. Hygrothermal response due to a variation in temperature and moisture concentrations has been studied for different material types sensitive to changing hygrothermal environment conditions. Numerical results suggest that temperature-dependent material properties ought to be used in the analysis of laminated plates subjected to hygrothermal loads.
机译：提出了一种基于整体局部高阶理论（GLHOT）的四节点四边形板单元，以研究层压复合板由于温度和湿度的变化而引起的响应。由于GLHOT中应变分量的计算涉及一阶和二阶导数，因此在横向位移函数中需要C_0和C_1连续性[Int J Mech Sci，2007; 49：1276-1288]。本文采用细化单元法构造了满足C〜0连续性的位移函数，并采用离散的Kirchhoff四边形薄板单元DKQ来满足C〜1连续性的要求。与以前的大多数认为材料特性与温度无关的研究相反，研究了温度和水分浓度对多层板材料特性和湿热响应的影响。对于对湿热环境条件敏感的不同材料类型，已经研究了由于温度和水分浓度的变化而引起的湿热响应。数值结果表明，温度依赖性材料特性应用于承受湿热载荷的层压板的分析。

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  • 来源
    《Composite Structures》 |2010年第3期|633-646|共14页
  • 作者

    S.H. Lo; Wu Zhen; Y.K. Cheung; Chen Wanji;

  • 作者单位

    Department of Civil Engineering, University of Hong Kong, Pokfulan Road, Hong Kong SAR, People's Republic of China;

    Institute for Structural Analysis of Aerocraft, Shenyang Institute of Aeronautical Engineering, Shenyang 110136, China;

    Department of Civil Engineering, University of Hong Kong, Hong Kong, China;

    Institute for Structural Analysis of Aerocraft, Shenyang Institute of Aeronautical Engineering, Shenyang 110136, 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

    hygrothermal effect; laminates; global-local higher order theory; quadrilateral laminated plate element; material properties;

    机译：湿热作用层压板全球局部高阶理论;四边形层压板元件;材料特性;

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