多场耦合粘弹性轴向运动板减振分析

Vibration attenuation analysis of multifield coupled viscoelastic axial moving plates

在气动热环境及横向激励作用下,对粘弹性轴向运动板的振动特性及减振问题进行分析。基于von Karman非线性本构理论和线性势流理论,考虑平面内热载荷和摄动压力对轴向运动板横向弯曲挠度的影响,并对该系统安装非线性能量阱(Nonlinear Energy Sink以下简称NES)减振器,建立了在空气-热环境中板的振动模型。通过数值模拟对非线性微分方程进行了近似分析得到了板的位移时间响应解析解。结果表明,在给定的几何参数范围内,NES可以达到很好的振动抑制效果,实现了振动抑制功能。

Vibration characteristics and vibration reduction of viscoelastic axial moving plates were analyzed under aerodynamic thermal environment and lateral excitation. Based on Karman＇ s Nonlinear constitutive theory and linear potential flow theory,the influences of thermal load and perturbation pressure on lateral bending deflection of axial moving plate were considered,and the Nonlinear Energy Sink（ NES） damper was installed in this system,in turns the vibration model of plate in air-thermal environment was further established. The analytical solution of the displacement time response of the plate was obtained by the approximate analysis of the nonlinear differential equation under numerical simulation. The calculation results show that within a given geometrical parameter range,the NES can have a good vibration suppression effect and achieve a vibration suppression function.