[论文解读] Creep and Mechanical Oscillator Damping

Randall D. Peters|ArXiv.org|Sep 25, 2001

Dynamics and Control of Mechanical Systems被引用 3

一句话总结

本文通过强调结构件中由次级蠕变引起的内摩擦，而非依赖传统的粘性或摩擦模型，提出了一种机械振子阻尼的修正模型。该模型成功解释了Q因子随频率变化的特性，为振子中能量损耗机制提供了更准确的概念性理解。

ABSTRACT

Although "friction" is included in many models of oscillator damping, including viscous ones applied to the pendulum; they "miss the mark" with regard to a conceptual understanding of the mechanisms responsible for energy loss. The theory of the present paper corrects some of these misunderstandings by considering the influence of internal friction which derives from the structural members of the oscillator through secondary rather than primary creep. The simple model properly describes the variation of Q with frequency.

研究动机与目标

• 解决现有振子阻尼模型在依赖粘性或宏观摩擦时存在的概念性不足之处。

提出的方法

• 通过结构件中次级蠕变产生的内摩擦来建模振子中的能量损耗。

实验结果

研究问题

• RQ1 结构件中的次级蠕变如何影响振子阻尼？

主要发现

• 该模型准确描述了Q因子随频率的变化。