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首页> 外文期刊>Journal of Aerospace Sciences and Technologies >EXPERIMENTAL STUDIES ON THE VIBRATION CONTROL OF EPOXY CLAY NANOCOMPOSITES
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EXPERIMENTAL STUDIES ON THE VIBRATION CONTROL OF EPOXY CLAY NANOCOMPOSITES

机译:环氧粘土纳米复合材料振动控制的实验研究

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摘要

Fabrication of nanocomposites for different-clay (alumino-silicate) concentrations (1, 3, 5 and 10 wt%) with the matrix (epoxy) is done by using shear mixer. This paper presents the experimental study of free vibration and damping characteristics. The work also involves vibration control of nanocomposite laminates by reinforcing organically modified montmorillonite clay in the epoxy matrix by resin casting technique. Theoretical study is also carried out to study the vibration and damping characteristics of epoxy clay nanocomposites. Dynamic result shows that the second phase nanoscale dispersion in the matrix significantly enhances the internal damping of nanocomposites. This work also presents the active vibration control of nanocomposite beams. Piezoelectric patches are bonded on the surface of beam and control algorithms are applied to the system. Feed forward (open loop) control algorithms are used to control the vibration. Maximum control is obtained for sample with 3 wt. %OC.
机译:通过使用剪切混合器来制备具有不同粘土(硅酸铝)浓度(1、3、5和10 wt%)的纳米复合材料与基质(环氧树脂)。本文介绍了自由振动和阻尼特性的实验研究。这项工作还涉及通过树脂浇铸技术在环氧树脂基体中增强有机改性的蒙脱土,从而控制纳米复合材料层压板的振动。还进行了理论研究,以研究环氧粘土纳米复合材料的振动和阻尼特性。动态结果表明,基质中的第二相纳米级分散显着增强了纳米复合材料的内部阻尼。这项工作还提出了纳米复合材料梁的主动振动控制。压电贴片粘结在梁的表面,并且将控制算法应用于该系统。前馈(开环)控制算法用于控制振动。对于3 wt。%的样品,可获得最大的控制。 %OC。

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