Active Vibration Suppression of Stiffened Composite Panels with Piezoelectric Materials under Blast Loads
Active Vibration Suppression of Stiffened Composite Panels with Piezoelectric Materials under Blast Loads
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DOI：
10.3390/app10010387
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发表时间：
2020-01
期刊：
影响因子：
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通讯作者：
Chang-Yull Lee;Jin-Young Jung;Se-Min Jeong
中科院分区：
文献类型：
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作者：
Chang-Yull Lee;Jin-Young Jung;Se-Min Jeong
研究了带压电传感器和作动器的加筋板在正常爆炸荷载作用下的瞬态响应。飞行器可能暴露在由爆炸或冲击波扰动产生的爆炸脉冲中。因此，在爆炸荷载作用下，车辆的主动振动抑制是非常重要的。该结构模型被设计为上下表面嵌有锆钛酸铅（PZT）压电陶瓷层的层压复合板。假定爆炸荷载均匀分布在整个面板表面。采用板的一阶剪切变形理论，应用扩展哈密顿原理推导运动方程。通过与以往数据的对比，验证了数值模型的正确性。采用线性二次型调节器（LQR）控制算法，对振动特性和动态响应进行了比较。由于压电片附着在整个表面，研究了加劲肋位置的影响。此外，还研究了贴片位置在冲击波作用下的影响。从各种结果来看，为了获得最佳的控制性能，研究的目标是找到在爆炸载荷环境下最有效的传感器和执行器对的最佳位置。
Transient responses of stiffened panels with piezoelectric sensors and actuators are studied under normal blast loads. The air vehicles could be exposed to blast pulses generated by an explosion or shock-wave disturbances. Thus, active vibration suppression of the vehicles is important under blast loadings. The structural model is designed as a laminated composite panel with lead zirconate titanate (PZT) piezoceramic layers embedded on both top and bottom surfaces. A uniformly distributed blast load is assumed over the whole of the panel surface. The first-order shear deformation theory of plate is adopted, and the extended Hamilton’s principle is applied to derive the equations of motions. The numerical model is verified by the comparison with previous data. Using linear quadratic regulator (LQR) control algorithm, vibration characteristics and dynamic responses are compared. As piezoelectric patches are attached on the whole of the surface, the effect of the stiffener’s location is studied. Furthermore, the influences of the patch’s positions are also investigated through subjection to the blast wave. From various results, in order to get the best control performances, the research aims to find the optimum position of sensor and actuator pairs that is most effective under blast load environments.