通过扩散耗散阻尼杆的振动

IF 5.3 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Scripta Materialia Pub Date : 2024-11-23 DOI:10.1016/j.scriptamat.2024.116461

J. Svoboda , K. Hackl , F.D. Fischer

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引用次数: 0

摘要

了解振动与扩散的相互作用，例如 fcc 晶格中碳的扩散，仍然具有实际意义。本文提供了一个基于力学和热力学的分析框架，通过对扩散总耗散的评估，可以根据吉布斯能量平衡计算出振动棒的阻尼。最后，还发现了一种简单的关系，即振动棒的扩散系数、几何形状和弹性特性与阻尼系数之间的关系。这种方法可用于测量扩散系数。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Damping of vibrations of a rod by dissipation due to diffusion

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Damping of vibrations of a rod by dissipation due to diffusion

Understanding the interaction of vibrations with diffusion, e.g. of carbon in fcc lattice, is still of practical relevance. An analytical framework is offered based on the mechanics and thermodynamics, where the evaluated total dissipation by diffusion allows calculation of damping of a vibrating rod from the Gibbs energy balance. Finally, a simple relation is found relating the diffusion coefficient, geometry and elastic properties of the rod with its damping coefficient. This method could be utilized for measurement of the diffusion coefficient.

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来源期刊

Scripta Materialia 工程技术-材料科学：综合

CiteScore

11.40

自引率

5.00%

发文量

581

审稿时长

34 days

期刊介绍： Scripta Materialia is a LETTERS journal of Acta Materialia, providing a forum for the rapid publication of short communications on the relationship between the structure and the properties of inorganic materials. The emphasis is on originality rather than incremental research. Short reports on the development of materials with novel or substantially improved properties are also welcomed. Emphasis is on either the functional or mechanical behavior of metals, ceramics and semiconductors at all length scales.