摘要
应用模态叠加法研究了敷设粘弹性自由阻尼层加筋板的稳态简谐响应 .以结构幅频特性曲线的方式来研究粘弹性阻尼对结构响应的控制作用 ,分析了阻尼材料模量、损耗因子和阻尼层与基层厚度比对结构响应的影响 .分析中考虑了结构上不同位置的结点的情况 .结果表明 ,在相同幅度的情况下 ,增加阻尼层与基层厚度比比增加阻尼材料损耗因子的减振效果好 ;
The steady state harmonic response of stiffened plate with unconstrained damped layer was analyzed using a modal superposition method. The viscoelastic damping control of structural dynamic response was studied by relational curves of structural response amplitude and load frequency. The influences of material loss factor, thickness ratio of damping layer to basic layer on the structural dynamic response were analyzed. In the analysis different nodes of stiffened plate are considered. The numerical examples show that,in the same scale, the increase of thickness ratio of damping layer to basic layer is more effective than the increase of material loss factor for controlling structural resonant response and the viscoelastic material is effective for control of structural resonant response.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2002年第11期1544-1547,共4页
Journal of Shanghai Jiaotong University
关键词
自由阻尼层
加筋板
简谐响应
振动控制
船舶
unconstrained damped layer
stiffened plate
harmonic response
vibration control
