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Free vibration analysis of thin rectangular laminated plate assemblies using the h-p version of the finite element method

机译:使用h-p版本的有限元方法对矩形薄层压板组件进行自由振动分析

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摘要

A vibration study of thin, laminated plate assemblies is conducted by using the h-p version of the finite element method (FEM). Polynomially-enriched stiffness and mass matrices are derived from classical plate theory using Symbolic Computing, and then stored in algebraic form for a single, generic element. A number of such elements may then be combined to form the global stiffness and mass matrices for a more general planar assembly. Any of the classical edge conditions, or point corner supports, may be accommodated in the analysis, and the natural frequencies are sought from a standard matrix-eigenvalue problem. Excellent agreement has been found with the work of other investigators. The h-p method is shown, by example, to offer considerable savings in computational effort when compared with the standard h-version of the FEM. One further development of the method is presented which illustrates how it might form the basis of a condition monitoring measuring technique based on natural frequency shifts arising from non-propagating, through-the-thickness, crack damage.
机译:通过使用h-p版本的有限元方法(FEM)对薄的层压板组件进行振动研究。多项式富集的刚度和质量矩阵是使用符号计算从经典板理论中得出的,然后以代数形式存储为单个通用元素。然后,可以将许多这样的元件组合以形成整体刚度和质量矩阵,以用于更一般的平面组件。分析中可以容纳任何经典的边缘条件或点角支撑,并且可以从标准矩阵特征值问题中寻找固有频率。已与其他研究人员的工作达成了极好的协议。例如,与FEM的标准h版本相比,显示了h-p方法可显着节省计算工作量。提出了该方法的进一步发展,该方法说明了如何基于非传播的,贯穿厚度的裂纹损伤而产生的自然频率偏移,构成状态监测测量技术的基础。

著录项

  • 来源
    《Composite Structures》 |1995年第4期|p.237-246|共10页
  • 作者单位

    Department of Aeronautics and Astronautics, University of Southampton, Highfield, Southampton SO 17 1BJ, Hampshire, UK;

  • 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 工程材料学;
  • 关键词

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