固体低频内耗力学模型及其测量研究

On the Mechanical Models and Measurment of Low Frequency Internal Friction in Solids

综述了固体低频内耗的力学模型及其测量的研究进展.固体的内耗有滞弹性和粘弹性内耗,低频内耗常用的测量方法有自由衰减法和强迫振动法.固体内耗的典型力学模型有两参量和三参量的Voigt模型和Maxwell模型,都可用来描述固体内耗,但都有一定局限性,目前还没有一个理想的力学模型来描述粘弹性内耗,尤其是非线性粘弹性内耗.

The mechanical models and measurements of low frequency internal friction in solids are discussed and described in this paper. There are anelasticity and viscoelasticity internal friction in solid. Free-decay and forced vibration methods can be used to measure the low frequency internal friction. Two-parameter and three- parameter mechanical models can be used to describe the internal friction of materials but they have their limitations.No appropriate mechanical model can be used to describe viscoelasticity internal friction, especially non-linear viscoelasticity.