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Transient dynamic response of initially stressed composite circular cylindrical shells under radial impulse load

机译：径向脉冲载荷下初始应力复合圆柱壳的瞬态动力响应

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摘要

Free and forced vibration of multilayer composite circular cylindrical shells under transverse impulse load as well as combined static axial loads and internal pressure was investigated based on first order shear deformation theory. The boundary condition was considered to be simply supported. Displacement components are the product of functions of position and time. The function of position components of displacement was obtained in the form of double Fourier series. Solution to the equilibrium equations of free vibration of the shell was obtained using Galerkin method. In the analysis of transient dynamic response, the impulse load was in the form of sine pulse, which is applied on a rectangular area. The function of time is obtained using the results of free vibration and convolution integral. Finally time response of displacement components is derived by mode superposition method. The effect of fiber orientation, axial load, internal pressure and some of the geometrical parameters on the time response of the shells has been shown. The results show that the dynamic responses are governed primarily by the natural period of the structure which is affected by applied axial load and internal pressure. The accuracy of the analysis has been examined by comparing the results with those available in the literature.
机译：基于一阶剪切变形理论，研究了多层复合圆柱壳在横向冲击载荷下的自由振动和强迫振动，以及轴向静载荷和内压的共同作用。边界条件被认为是简单支持的。位移分量是位置和时间函数的产物。位移的位置分量的功能以双傅立叶级数形式获得。用Galerkin方法求解了壳体自由振动的平衡方程。在瞬态动态响应分析中，脉冲负载为正弦脉冲形式，施加在矩形区域上。时间的函数是使用自由振动和卷积积分的结果获得的。最后通过模态叠加法得到位移分量的时间响应。已经显示了纤维取向，轴向载荷，内部压力和一些几何参数对壳体时间响应的影响。结果表明，动力响应主要受结构的自然周期控制，固有周期受轴向载荷和内部压力的影响。通过将结果与文献中的结果进行比较，检查了分析的准确性。

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  • 来源
    《Composite Structures》 |2009年第2期|275-284|共10页
  • 作者

    S.M.R. Khalili; R. Azarafza; A. Davar;

  • 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 Street, Molasadra Avenue, Vanak Square, Tehran, Iran Faculty of Engineering, Kingston University, London, UK;

    Mechanical Engineering Department, Islamic Azad University, Sanandaj Branch, Sanandaj, Iran;

    Centre of Excellence for Research in Advanced Materials and Structures, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Pardis Street, Molasadra Avenue, Vanak Square, 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

    forced vibration; composite; cylindrical shell; axial load; internal pressure; dwynamic response;

    机译：强制振动综合;圆柱壳轴向载荷内部压力动态反应;

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