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首页> 外文期刊>International journal of mechanics and materials in design >Hygrothermal forced vibration of a viscoelastic laminated plate with magnetostrictive actuators resting on viscoelastic foundations
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Hygrothermal forced vibration of a viscoelastic laminated plate with magnetostrictive actuators resting on viscoelastic foundations

机译：粘弹性型号的储蓄液压振动粘弹性致动器依赖于粘弹性基础

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摘要

The article presents a vibration analysis of a laminated composite sandwich plate containing viscoelastic layers in the core and faces of the plate. The sandwich plate includes magnetostrictive actuating layers, rests on a three-parameter viscoelastic medium, and undergoes to hygrothermal environmental conditions and in-plane forces in x and y directions. The viscoelastic layers are considered as Kelvin-Voigt viscoelastic model. The partial differential equations system is deduced according to the dynamic version of the principle of virtual displacements and is based on a theory that accounts for the exponential distribution of transverse shear deformation. The analytical Navier's solution type is obtained to investigate the parametric effect of the location of smart layers, lamination schemes, modes, the feedback gain control value, viscoelastic structural damping, thickness ratio, the aspect ratio, viscoelastic layer thickness-to-magnetostrictive layer thickness ratio, foundation, in-plane forces, temperature and moisture on vibration characteristics of the sandwich plate. The outcomes show that the deformation and vibration in the structure can be controlled by changing the smart layer position and value of the feedback gain control parameter as well as the studied system stability can be affected by the value of viscoelastic structural damping and foundation constants. Besides, the absorption of moisture in matrix material increases the deflection of structure and increases the damping time. The results of this study can contribute to the development of the design of smart structural applications, especially those that require foundations to support them and deal with their dynamic response as well as provide a reference framework for studies of the impacts of humid environments on such structures in the presence of in-plane forces, especially, in the applications subjected to various forces and environmental conditions. Many of these systems require foundations to support the structures and deal with their dynamic response such as civil and mechanical structural applications and the aerospace and aeronautical vehicles.
机译：该物品呈现了含有粘弹性层的层压复合夹层板的振动分析，在板的芯和面上。夹层板包括磁致伸缩致动层，静置在三参数粘弹性介质上，并经历湿热环境条件和X和Y方向的面内力。粘弹性层被认为是开尔文-Voigt粘弹性模型。部分微分方程系统根据虚拟位移原理的动态版本推断，并且基于横向剪切变形的指数分布的理论。获得分析Navier的解决方案类型以研究智能层，层压方案，模式，反馈增益控制值，粘弹性结构阻尼，厚度比，纵横比，粘弹性层厚度与磁致伸缩层厚度的参数效应夹层板振动特性的比例，基础，面内力，温度和水分。结果表明，可以通过改变反馈增益控制参数的智能层位置和值来控制结构中的变形和振动以及所研究的系统稳定性可能受到粘弹性结构阻尼和基础常数的值的影响。此外，基质材料中的水分的吸收增加了结构的偏转并增加了阻尼时间。本研究的结果可以有助于开发智能结构应用的设计，特别是那些需要基础支持它们的人并处理它们的动态响应，并为研究潮湿环境对这种结构的影响提供参考框架在面内力的存在中，特别是在经受各种力和环境条件的应用中。许多这些系统需要基础来支持结构并处理其动态响应，如民事和机械结构应用和航空航天和航空车辆。

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