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A semi-analytical finite element model for the analysis of laminated 3D axisymmetric shells: Bending, free vibration and buckling

机译:用于分析层压3D轴对称壳的半分析有限元模型:弯曲,自由振动和屈曲

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摘要

A general semi-analytical finite element model is developed for bending, free vibration and buckling analysis of shells of revolution made of laminated orthotropic elastic material. The 3D elasticity theory is used and the equations of motion are obtained by expanding the displacement field and load in the Fourier series in terms of the circumferential coordinate, θ. The coefficients of the expansion are functions of (r,z), and they are approximated using the finite element method. This leads to a semi-analytical finite element in the (r,z) plane. The element is validated by comparing the present results with the analytical and numerical solutions available in the literature.
机译:建立了一个通用的半解析有限元模型,用于对正交各向异性弹性材料制成的旋转壳体的弯曲,自由振动和屈曲进行分析。使用3D弹性理论,并通过根据圆周坐标θ扩展傅立叶级数中的位移场和载荷来获得运动方程。展开系数是(r,z)的函数,并且使用有限元方法进行近似。这导致在(r,z)平面上的一个半解析有限元。通过将当前结果与文献中可用的分析和数值解决方案进行比较来验证该元素。

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