摘要
针对具有特殊结构和特殊边界条件的带孔口型耦合板结构不易求得振动问题解析解的这一情况,将结构有限元动响应分析方程的应用推广到板壳振动功率流理论计算中,用以分析耦合板结构振动能量传递特性。首先建立带孔口型耦合板结构模型,应用Abaqus软件中的稳态动力学分析法对其振动功率流进行分析计算,得到结构共振频率处的传递路径图,从而能直观描述结构振源和振动能量传递形式;其次研究施加阻尼器对振动功率流传递路径及其数值曲线的影响。研究结果表明,振动功率流的分析及阻尼器的施加,为耦合板结构的减振降噪提供一定的依据。
Due to the special structure and special boundary conditions, it＇ s difficult for □-shaped coupled plates structure with holes to calculate the analytic solutions about vibration problem. The structure finite element method is utilized to plate and shell vibration power flow theory. The vibration energy transmission characteristic of coupled plate structure is analyzed by this method. First of all, the model of □-shaped coupled plates structure with holes is built, then the power flow is analyzed and calculated using the method of steady-state dynamics in Abaqus, and the power flow path is obtained in the resonant frequency place of the structure to intuitively described vibration sources and vibration energy transfer form. Secondly, the role of damper for the vibration power flow path and its numerical curve is investigated. The results of the study show that the analysis of the vibration power flow with and without the damper can provide some references for the structure to reduce vibration and noise.
出处
《机械强度》
CAS
CSCD
北大核心
2013年第2期231-236,共6页
Journal of Mechanical Strength
基金
国家自然科学基金(51075078)
中央高校基本科研业务费专项资金(HEUCF110701)资助
