附加磁体对局部约束阻尼固支梁损耗因子的影响

The effects of additional magnets on the loss factor of a smart magnetic partially constrained layers clamped-clamped beam

研究了在固支梁上设置 1段或两段阻尼层时 ,附加永磁体对阻尼的改进效果 .分析了不同阻尼层设置方式下 ,磁约束阻尼处理对系统一阶模态损耗因子的影响 ,阐明了磁约束的减振机理 ,分析了阻尼层剪切模量和磁刚度对磁约束处理减振效果的影响 .

The improvement of damping characteristics of the magnetic constrained layer damping treatment (MCLD) was studied when a clamped-clamped beam was treated with one single patch or two segmented patches. The vibration attenuation mechanism was expounded. The influence of different damping layer shear modulus and magnetic stiffness on the loss factor of beam for the first mode by MCLD treatment was evaluated.