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液体静压油膜-转台系统的模态分析及参数影响

Keywords: 液体静压支承系统,模态,振动频率,响应面拟合

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Abstract:

为了使液体静压油膜-转台系统运行平稳,减小其振动,根据实际工程状况,建立了液体静压油膜-转台系统的有限元模型,并对系统进行了模态分析,研究了系统参数对系统振动频率的影响;并且,利用响应面方法得到了系统参数与振动频率之间的显式函数关系.结果表明:油腔个数、材料弹性模量和油膜刚度的共同作用对系统频率产生影响;材料弹性模量对系统低阶振动频率的影响较小,对高阶振动频率的影响较大;油膜刚度对系统低阶振动频率的影响会随着系统油腔数目的增多而增大.

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