在建立有限元模型中，广泛采用变截面梁和异型梁是本模型的一大特色。

Taper section and custom section beams are widely adopted in the process of model set-up, which is a feature of this paper.

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建立有底座吸振器和两端固支梁主系统耦合的数学模型。

A mathematical model of the system composed of the vibration absorber with a base and coupled with an ends-fixed beam is established.

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