Vibration analysis of sandwich beam with honeycomb core and piezoelectric facesheets affected by PD controller

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Zeinab Soleimani-Javid, S. Amir, Z. K. Maraghi
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引用次数: 1

Abstract

Free vibration analysis of a sandwich beam with honeycomb core and piezoelectric face sheets, which is rested on the viscoelastic foundation is investigated. The thermal environment and the electric field are applied to this structure. Also, it is affected by the proportional-derivative (PD) controller. The amount of gain in this controller can affects the vibration frequency. The displacement components are expressed by improved high-order sandwich panel theory (IHSAPT) that considers continuity conditions for transverse shear stress at the interfaces and the zero transverse shear stresses conditions on the upper and lower surfaces of the beam and core flexibility. The motion equations are derived and solved by Hamilton's principle and Navier's method, respectively. This paper examines the effects of various parameters, such as the internal aspect ratio and the cell angle/thickness of the honeycomb core, temperature variations, viscoelastic environment, electric load, and control gain on its natural frequencies. The results show when the honeycomb core's to face sheet's thickness ratio increases, the beam dimensionless frequency increases, too. Also, by increasing the internal aspect ratio of honeycomb core, the frequency of sandwich beam decreases. The results of this study can be used to vibration control in aerospace engineering and constructions.
PD控制器对蜂窝芯压电夹层梁的振动分析
研究了粘弹性地基上蜂窝芯压电面板夹层梁的自由振动分析。热环境和电场被应用于该结构。此外,它还受到比例微分(PD)控制器的影响。该控制器中的增益量会影响振动频率。位移分量由改进的高阶夹芯板理论(IHSAPT)表示,该理论考虑了界面处横向剪切应力的连续性条件以及梁上下表面和芯体柔性上的零横向剪应力条件。分别用Hamilton原理和Navier方法推导和求解了运动方程。本文研究了蜂窝芯的内长宽比和蜂窝角/厚度、温度变化、粘弹性环境、电负载和控制增益等各种参数对其固有频率的影响。结果表明,随着蜂窝芯板厚度比的增大,梁的无量纲频率也随之增大。同时,通过增加蜂窝芯的内部纵横比,夹层梁的频率降低。研究结果可用于航空航天工程和结构的振动控制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
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