摘要
运用等效复刚度法和传递矩阵方法推导了作局部自由阻尼层处理的梁式结构的动力响应方程,得到了系统的频响曲线。同时,分析了阻尼材料的杨氏模量、厚度以及安装位置对系统频响的影响。计算结果与有限元法结果和相关文献比较,吻合良好。分析表明,该方法具有较高的精度,可为梁式结构自由阻尼层处理的设置和优化提供理论指导。
Dynamic response of beam-type structure with multiple unconstrained damped patches is deduced using equivalent complex stiffness and transfer function methods,and the typical frequency response curve of the system is obtained.In addition,the effect of the thickness,Young＇s modulus and position of the damping layer on the dynamic response is analyzed.The presented results are in good agreement with those obtained by the finite element method and from the published literature.The proposed method is validated to have good accuracy and can be used to supply a theoretical guidance for optimizing the damping patches on the beam-type structures.
出处
《噪声与振动控制》
CSCD
北大核心
2010年第5期30-33,共4页
Noise and Vibration Control
基金
新世纪优秀人才基金(NCET-06-0883)资助
关键词
振动与波
振动控制
局部自由阻尼梁
等效复刚度
传递矩阵法
动力响应
vibration and wave
vibration control
beam-type structure with multiple unconstrained damping patches
equivalent complex stiffness
transfer function method
dynamic response
