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首页> 美国政府科技报告 >Galloping Behaviour of an Aeroelastic Oscillator with Two Degrees of Freedom
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Galloping Behaviour of an Aeroelastic Oscillator with Two Degrees of Freedom

机译：具有两个自由度的气弹弹性振荡器的舞动行为

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The non-linear dynamic behavior is considered of a mechanical oscillator with twodegrees of freedom under the effects of aerodynamic forces. Free oscilation tests are used to determine the mechanical and damping properties of the construction. Dynamic tests were performed for different oscillator configurations and at different wind speeds. The occurence of self-sustained oscillations were investigated. The resulting dynamic behavior is strongly complicated by the interaction of the two oscillation modes, in particular when the mode frequencies are of the same order. When attempting to construct an analytical model of the behavior, the strong mode interaction suggests that the aerodynamic stiffness effects and a phase relation must be included to describe the observed behavior.

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