Abstract

This study analyzes a vibration transmission system model composed of excitation component, interface paths and receiver component from the perspective of interface path transfer. Since the rough surface topography has a certain influence on the vibration transmission of the interface, the surface spectrum analysis of the contact surface is firstly given by using the areal power spectral density (APSD) method. Then based on the established vibration transfer model, two indexes of interface path transmissibility and interface insertion loss rate are proposed to analyze the contribution of each interface path to vibration transfer. The numerical results show that the order of the different interface forces to vibration transfer can be clearly given in the frequency domain. This can help designers find the main transfer path quickly, and then modify interface parameters to meet the requirements of vibration control.

摘要

本研究从界面路径传递的角度分析了由激励组件、界面路径和接收组件组成的振动传递系统模型。由于粗糙的表面形貌对界面的振动传递有一定的影响，首先采用面积功率谱密度（APSD）方法对接触面进行表面谱分析。然后基于建立的振动传递模型，提出界面路径传递率和界面插入损耗率两个指标，分析各界面路径对振动传递的贡献。数值结果表明，在频域中可以清楚地给出不同界面力对振动传递的顺序。这可以帮助设计人员快速找到主要传输路径，