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Free vibration response of composite sandwich cylindrical shell with flexible core

机译：柔性芯复合夹芯圆柱壳的自由振动响应

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摘要

This study deals with the free vibration analysis of composite sandwich cylindrical shell with a flexible core using a higher order sandwich panel theory. The formulation uses the classical shell theory for the face sheets and an elasticity theory for the core and includes derivation of the governing equations along with the appropriate boundary conditions. The model consists of a systematic approach for the analysis of sandwich shells with a flexible core, having high-order effects caused by the nonlinearity of the in-plane and the vertical displacements of the core. The behavior is presented in terms of internal resultants and displacements in the faces, peeling and shear stresses in the face-core interface and stress and displacement field in the core. The accuracy of the solution is examined by comparing the results obtained with the analytical and numerical results published in the literatures. The parametric study is also included to investigate the effect of geometrical properties such as radius of curvature, length and sector angle of the shell.
机译：本研究利用高阶夹心板理论对具有挠性芯的复合夹层圆柱壳的自由振动进行分析。该公式将经典的外壳理论用于面板，将弹性理论用于核心，并包括控制方程的推导以及适当的边界条件。该模型包括一种用于分析具有柔性芯的夹层壳的系统方法，由于平面内的非线性和芯的垂直位移而产生高阶效应。用内部合成物和面中的位移，面-芯界面中的剥离应力和剪应力以及芯中的应力和位移场表示行为。通过将获得的结果与文献中发表的分析和数值结果进行比较，可以检验解决方案的准确性。还包括参数研究，以研究几何特性的影响，例如曲率半径，壳的长度和扇形角。

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  • 来源
    《Composite Structures》 |2010年第5期|1269-1281|共13页
  • 作者

    O. Rahmani; S.M.R. Khalili; K. Malekzadeh;

  • 作者单位

    Centre of Excellence for Research in Advanced Materials and Structures, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Pardis St., Molasadra Ave., Vanak Sq., Tehran, Iran;

    Centre of Excellence for Research in Advanced Materials and Structures, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Pardis St., Molasadra Ave., Vanak Sq., Tehran, Iran Faculty of Engineering, Kingston University, Roehampton Vale, Friars Ave, London SW15 3DW, UK;

    Aerospace Research Centre, Karaj Makhsous Road, Tehran, Iran;

  • 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

    polymer matrix composite; flexible core; foam; free vibration; cylindrical sandwich shell; analytical analysis;

    机译：聚合物基复合材料;灵活的核心;泡沫;自由振动;圆柱形三明治壳分析分析;

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