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An effective coating material solution and modeling technique for damping oriented design of thin walled mechanical components

机译：用于薄壁机械零件阻尼定向设计的有效涂料解决方案和建模技术

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摘要

A multi-layer coating beam model is proposed to find, at the modelling stage, optimal coating architectures to be applied to mechanical components, in order to maximize the vibration damping in industrial operating conditions. Recent experimental works showed that application of coatings may influence vibration damping, and that dissipative actions can be mainly localized at the interlaminar interface. The aim of this paper is to present a mechanical model for numerically simulating the response of a uniform, multi-layered composite beam specimen taking into account of these interlaminar dissipative actions, so that reducing the need to experimentally evaluate the effectiveness of many candidate coating solutions. The model is based on a modified third order zig zag beam theory, where the contribution of the frictional actions is modelled by means of complex, elastohysteretic distributed actions localized at the layer interfaces. The resulting multi layered beam model degrees of freedom do not depend on the number of the coating layers and the proposed technique showed to be computationally effective to simulate the damping behaviour of different virtual specimens. A frequency and application dependent damping estimator is proposed and some application examples are presented and critically discussed.
机译：提出了一个多层涂层梁模型，以在建模阶段找到要应用于机械部件的最佳涂层架构，以最大程度地提高工业运行条件下的振动阻尼。最近的实验工作表明，涂层的应用可能会影响减振，并且耗散作用可能主要集中在层间界面。本文的目的是考虑到这些层间耗散作用，提供一种力学模型，用于数值模拟均匀的多层复合梁试样的响应，从而减少了对许多候选涂层溶液的有效性进行实验评估的需要。该模型基于修改后的三阶之字形梁理论，其中摩擦作用的贡献是通过位于层界面的复杂弹性滞后分布作用来建模的。所得的多层梁模型自由度不取决于涂层的数量，并且所提出的技术显示出在计算上有效地模拟不同虚拟样本的阻尼行为。提出了一种与频率和应用有关的阻尼估计器，并给出了一些应用示例并进行了严格讨论。

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  • 来源
    《Composite Structures》 |2018年第5期|251-267|共17页
  • 作者

    Amadori Stefano; Catania Giuseppe;

  • 作者单位

    Univ Bologna, Dept Ind Engn, DIN, Ciri Mam, Viale Risorgimento 2, I-40136 Bologna, BO, Italy;

    Univ Bologna, Dept Ind Engn, DIN, Ciri Mam, Viale Risorgimento 2, I-40136 Bologna, BO, Italy;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Damping; Coating; Multi-layer beam; Hysteresis;

    机译：阻尼;涂层;多层光束;磁滞;

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