摘要
采用等效参数法推导了阻尼复合结构的等效弯曲刚度和结构损耗因子，并对不同结构特征的阻尼复合结构的隔声量进行了数值计算，分析了材料的不同几何参数、物理参数对隔声吻合频率及隔声量的影响，给出了一些有关阻尼复合结构隔声性能的结论．
Equivalent Parameter method is used to derive the equivalent bending stiffness and the structural loss factors of a composite damping structure. Numerical calculation of the acoustical reduction coefficient of the damping structures with various structural parameters has been carried out. The effects of the physical and geometrical parameters of the material used on the coincidence frequency and the sound reduction coefficient are analyzed. The conclusions drawn on the sound insulation performances of the composite damping structures are given.
出处
《华中理工大学学报》
CSCD
北大核心
1998年第2期4-6,共3页
Journal of Huazhong University of Science and Technology
基金
国家"九五"攀登计划项目!"大型机电系统中若干动力学关键技术的研究"资助
关键词
阻尼复合结构
等效参数法
隔声量
参数配置
composite damping structure
Equivalent Parameter method
equivalent bending stiffness
acoustic reduction coefficient
parameter allocation
coincidence frequency
