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Nonlinear dynamics of rotating blades with variable cross-section

机译:可变横截面旋转叶片的非线性动力学

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In this chapter,nonlinear dynamic behaviors of the variable cross-section rotating blades are studied.The blade is considered to be a rotating cantilever plate model with variable cross-section.Considering the influence of centrifugal force,variable rotating speed and cross-section warp.In the light of the Hamilton's principle,the von Karman deformation theory and the third-order shear deformation theory,we can derive the ordinary differential equation by using Galerkin method from the nonlinear partial differential equations.The multiple scales is applied to get the averaged equations with the 1:3 internal resonance of the rotating blades.Using numerical simulation to study the effects of aerodynamic forces and disturbance amplitude of the rotating blades on nonlinear dynamic behaviors.It shows that the rotating blades performs complex nonlinear dynamic behaviors,such as single periodic,chaotic motions,multiple periodic and quasi-periodic.
机译:在本章中,研究了可变横截面旋转叶片的非线性动态行为。叶片被认为是具有可变横截面的旋转悬臂板模型。用于离心力,可变旋转速度和横截面经线的影响。 。在汉密尔顿原则的光之光中,Von Karman变形理论和三阶剪切变形理论,我们可以通过使用来自非线性偏微分方程的Galerkin方法来得出常微分方程。应用多个尺度以获得平均值具有1:3的旋转刀片内部共振的方程。用于研究空气动力和旋转叶片的扰动幅度在非线性动态行为上的效果。旋转叶片执行复杂的非线性动态行为,例如单个周期性,混沌动作,多个周期性和准周期性。

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