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首页> 外文期刊>Journal of Engineering & Applied Sciences >Free Vibration Analysis of Sandwich Cylindrical Panel with Functionally Graded Core by Using ABAQUS Software
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Free Vibration Analysis of Sandwich Cylindrical Panel with Functionally Graded Core by Using ABAQUS Software

机译：使用ABAQUS软件，用功能分级芯的夹层圆柱形面板的自由振动分析

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摘要

This study presents an exact three-dimensional free vibration solution for sandwich cylindrical panels with functionally graded core. Material properties of the FGM core are assumed to be graded in the radial direction, according to a simple power-law distribution in terms of volume fractions of the constituents. Poisson's ratio is assumed to be constant. The governing equation of motions is formulated based on the 3D-theory of elasticity and displacement fields are expanded in Fourier series along the in-plane coordinates which satisfy the simply supported edges boundary conditions. The state space technique is used to obtain natural frequencies analytically. Accuracy and convergence of the present approach are examined by comparing the analytical results with the existing values in literature. The parametric study is carried out to discuss the effects of gradient index, geometrical properties such as span angle, facing layers thickness and axial length to mid radius ratio on the frequency behavior of the sandwich panel. The obtained exact solution shows that the FGM core has significant effects on the vibration behavior of sandwich cylindrical panel. This fist known exact solution serves as a benchmark for assessing the validity of numerical methods or two-dimensional theories used to analyses of sandwich cylindrical panels.
机译：本研究为具有功能梯度芯的夹层圆柱板具有精确的三维自由振动溶液。根据成分的体积分数，根据简单的功率法分布，假设FGM芯的材料特性在径向方向上被分级。假设泊松的比率是恒定的。基于弹性的3D理论配制了运动的控制方程，并且位移场沿着面内坐标在傅立叶串联中扩展，这符合简单地支撑的边界条件。状态空间技术用于分析地获得自然频率。通过将分析结果与文献中的现有值进行比较来检查本方法的准确性和收敛性。进行参数研究以讨论梯度指数，几何特性，例如跨度角，面对层厚度和轴向长度的跨度与夹层的频率行为的效果。所获得的精确解决方案表明，FGM芯对夹层圆柱板的振动行为具有显着影响。该拳头已知的精确解决方案用作评估用于分析夹层圆柱板的数值方法或二维理论的有效性的基准。

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