本文在液体晃动等效力学模型的频响函数拟合方法的基础上，导出一种处理非线性液体晃动阻尼问题的模型参数近似拟合方法。
Based on the frequency response functions curve fit method, an approximate method for extraction of sloshing model parameters about the problem of nonlinear damping is derived.
首先将锚杆和砂浆视为弹性体，推导了锚杆-砂浆复合体等效力学模型的弹性参数；
First, regarding the anchor and mortar as elastic body, the elastic parameters of equivalent anchor-mortar mechanical model are deduced.
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