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-  2018 

采用紧耦合算法实现有限元中的FVD计算 Implementation of FVD in finite element analysis through tightly coupled method

Keywords: 流体粘滞阻尼器,振动控制系统,紧耦合算法,非线性,有限元

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Abstract:

流体粘滞阻尼器(FVD)广泛地应用于振动控制系统.由于其具有强非线性性质,在实际设计FVD振动控制系统时,常将其进行线性化处理计算,得到的计算结果与实际情况有较大的偏差.为此提出了一种方法,该方法将FVD与结构分别视为2个相互耦合系统,并采用紧耦合算法实现带有FVD的振动系统的计算.在2个相互耦合系统中,结构部分可用传统的方法计算,阻尼力由耦合参数代入;FVD可通过编写相应的计算程序进行计算,相应的速度由耦合参数代入,无需对FVD的模型进行简化,可在现有的FEM软件上实现FVD振动控制系统的计算.通过引入松弛因子可减少系统中误差传递,并在ANSYS软件上,利用APDL语言编写阻尼器求解及紧耦合迭代程序实现了这一算法

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