论文部分内容阅读
研究了无限板上受点激励时阻振质量对结构声传递的阻抑, 采用基于能量观点的隔振度来定义阻振质量的阻抑作用。通过理论分析验证了隔振度简化公式的可行性。发现板平面弯曲波分别和阻振质量的弯曲波和扭转波达到最佳耦合时, 平面弯曲波发生最大透射。算例分析和试验研究论证了理论分析的正确性, 为阻振质量应用于结构声传递途径的控制提供了理论和试验基础。
The damping of the acoustic transmission on the infinite plate by the point excitation is studied, and the damping effect of the vibration damping quality is defined by the vibration isolation degree based on the energy viewpoint. The feasibility of the simplified formula of vibration isolation degree is verified by theoretical analysis. It is found that the plane bending wave reaches the maximum transmission when the bending wave and the torsional wave of the plane bending wave and the damping mass reach the best coupling respectively. The example analysis and the experimental study demonstrate the correctness of the theoretical analysis, which provides the theoretical and experimental basis for the application of the vibration-proof mass to the control of structural acoustic transmission.