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Analysis of composite plates with variable stiffness using Galerkin Method

机译:用Galerkin法分析变刚度的复合材料板

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摘要

A solution methodology is developed to solve plane stress problem of composite plates with variable stiffness by using Galerkin technique and polynomials as trial functions. In the solution process, analytical computation has been done wherever it is possible, and analytical-numerical type approach has been made for all problems. The methodology is applied to two known case problems, composite plate with variable fibre content and laminated plate with spatially varying fibre orientations. The formulation of these problems results into coupled partial differential equations (with variable coefficients). The solutions of these equations are obtained using the polynomials as trial functions in the Galerkin method. The results are compared to that of Ritz and collocation technique published elsewhere. The method is found to determine closely both the displacements and the stresses with a few number of terms and in good agreement with other approximating methods. Computations on some examples show that, the method with the help of a symbolic math package is simple and efficient for solving these types of problems in engineering applications.
机译:通过使用Galerkin技术和多项式作为试验函数,开发了一种解决方法来解决具有可变刚度的复合板的平面应力问题。在求解过程中,已尽可能进行了解析计算,并且针对所有问题都采用了解析数字类型方法。该方法应用于两个已知的案例问题:纤维含量可变的复合板和纤维取向在空间上变化的层压板。这些问题的表述导致耦合的偏微分方程(具有可变系数)。这些方程的解是使用Galerkin方法中的多项式作为试验函数获得的。将结果与其他地方发布的Ritz和搭配技术进行了比较。发现该方法可以通过几个项来紧密确定位移和应力,并且与其他近似方法非常吻合。通过一些示例的计算表明,借助符号数学包的方法对于解决工程应用中的此类问题既简单又有效。

著录项

  • 来源
    《The Aeronautical Journal》 |2007年第1118期|p.247-255|共9页
  • 作者

    E. Senocak; H. Tanriover;

  • 作者单位

    Department of Mechanical Engineering Istanbul Technical University Istanbul, Turkey;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 航空;
  • 关键词

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