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基于能量等效的原则将黏弹性结构振动阻尼等效简化成黏性阻尼模型来处理是工程上常用的方法．本文首先介绍了能量等效法，并提出了一种基于系统特征值相等原则的等效方法；详细讨论并比较了这两种黏性阻尼等效方法所得到的等效系统，指出基于能量、特征值等效的原则实质上分别等价于系统的频率响应函数、频率响应函数幅值的等效性．
Based on the principle of energy equivalence, it is a common engineering method to simplify viscoelastic vibration damping equivalent to viscous damping model. In this paper, the energy equivalence method is firstly introduced and an equivalent method based on the principle of equal value of the system eigenvalue is proposed. The equivalent systems obtained by these two viscous damping equivalent methods are discussed and compared in detail. The principle of equivalence of values is equivalent to the equivalent of system frequency response function and frequency response function amplitude respectively.