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研究轻型结构、直升机旋翼结构和复合材料结构等的颤振飞行试验激励问题具有重要意义。提出以弯矩模拟压电粗纤维复合材料(MFC)激励器的作用力,从而解决MFC仿真建模问题。首先借助机翼有限元模型,建立带有压电激励器的机翼结构动力学仿真模型;然后以压电激励器地面激励试验结果为基础,通过修正仿真模型中压电作用弯矩的大小,实现仿真试验结果与地面试验结果的拟合,最终得出非线性压电激励器作用力;最后通过另一组地面试验数据验证了该作用力的大小,并将该作用力模拟技术应用于不同试验中。本文的研究结果可为后续以该激励器作为激励作动器或控制作动器的试验提供有益参考。
It is of great significance to study the flutter flight test excitation problem of light structure, helicopter rotor structure and composite structure. In order to solve the problem of MFC simulation modeling, a moment is used to simulate the force of piezoelectric coarse fiber composite (MFC) actuators. First of all, based on the finite element model of the wing, a dynamic simulation model of the wing structure with a piezoelectric actuator is established. Based on the excitation test result of the piezoelectric actuator, the bending moment of the piezoelectric effect in the simulation model is corrected, Finally, the force of the nonlinear piezoelectric actuator is obtained. Finally, another group of ground test data is used to verify the magnitude of the force, and the force simulation technique is applied to different Test. The results of this paper can provide a useful reference for the follow-up experiments using the actuator as an excitation actuator or a control actuator.