气流偏角对不同形状复合材料壁板热颤振特性的影响

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (11) : 65-69.

论文

气流偏角对不同形状复合材料壁板热颤振特性的影响

高扬，杨智春，谷迎松

作者信息 +

The Effect of Flow Yaw Angle on the Thermal Flutter Characteristics ofComposite Panels with Different Shapes

GAO Yang, YANG Zhi-chun, GU Ying-song

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文章历史 +

摘要

本文应用有限元方法分析研究了气流偏角和热载荷对不同形状复合材料壁板颤振特性的影
响。采用一阶剪切理论、von Karman 大变形板理论以及考虑气流偏角的一阶活塞气动力理论建立了考虑热载荷的复合材料壁板颤振的有限元模型。分析了三种面积相同但形状不同的复合材料壁板的颤振临界速压随温升和气流偏角的变化规律。结果表明，气流偏角为零时，面积相同形状不同的三种复合材料壁板的颤振临界速压随温度升高而近似呈线性降低，且三角形壁板的颤振临界速压高于梯形壁板，梯形壁板高于矩形壁板；随着气流偏角的增大，三种不同形状壁板的颤振临界速压都呈现出相同的规律；相同气流偏角下，三角形壁板的颤振临界速压最高，矩形壁板的颤振临界速压最低。

Abstract

This paper investigates the effects of flow yaw angle on the thermal flutter
characteristics of composite panels with different shapes. The first-order shear deformation theory,the von Karman large deflection theory, and the quasi-steady first-order piston theory appendedwith flow yaw angle are adopted in the finite element formulation. The principle of virtual work is
applied to develop the equations of motion of the panel flutter system. Three composite panelswith different shapes but the same area are considered and the critical flutter dynamic pressureunder different yaw flow angle with thermal load is calculated. The results show that the criticalflutter dynamic pressure decreases linearly with the increasing of temperature. The triangularpanel is more stable aeroelastically than the trapezoid panel while the trapezoid panel is morestable than the rectangular panel. The flutter characteristics of the three panels vary complicatedlyas the flow yaw angle increases. No matter how flow yaw angle changes, triangular compositepanel is most stable while rectangular one is most unstable.

导出引用

高扬;杨智春;谷迎松. 气流偏角对不同形状复合材料壁板热颤振特性的影响[J]. 振动与冲击, 2014, 33(11): 65-69

GAO Yang;YANG Zhi-chun;GU Ying-song. The Effect of Flow Yaw Angle on the Thermal Flutter Characteristics ofComposite Panels with Different Shapes[J]. Journal of Vibration and Shock, 2014, 33(11): 65-69