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首页> 外文期刊>Journal of Mechanical Science and Technology >Influence of support viscoelastic properties on the structural wave propagation
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Influence of support viscoelastic properties on the structural wave propagation

机译：支撑粘弹性对结构波传播的影响

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摘要

The dissipation of the structural vibration energy at viscoelastic supports is an efficient method of reducing modal resonances and consequent noise and fatigue related problems. The support stiffness has significant impact on the modal characteristics. The dissipation capabilities of the viscoelastic support depend on its stiffness. Methods to optimally tune this support stiffness are proposed in this study. The characteristic mechanical impedance for structural vibration is obtained from wave propagation analysis and non-reflecting boundary conditions. The wave propagation is analyzed near the supports installed at edges, middle of a structure, and for the tuned vibration absorber. The dependence of the optimal stiffness on the location and mass of the supports is identified. A simple analytical solution for optimal support stiffness for maximum dissipation of propagating vibration energy at supports is presented.
机译：结构振动能量在粘弹性支撑体上的耗散是减少模态共振以及随之而来的噪声和疲劳相关问题的有效方法。支撑刚度对模态特性有重要影响。粘弹性支撑的耗散能力取决于其刚度。这项研究中提出了优化调整支撑刚度的方法。结构振动的特征机械阻抗是通过波传播分析和非反射边界条件获得的。在安装于结构边缘，中间的支撑附近以及用于调谐减震器的位置附近，分析了波的传播。确定了最佳刚度对支撑件的位置和质量的依赖性。提出了一种用于最佳支撑刚度的简单分析方法，以最大程度地分散支撑处传播的振动能量。

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