筒式空气弹簧机械阻抗近似解析算法研究

摘要

建立一个理想化的筒式空气弹簧模型，基于空气波动理论提出一种通过计算空气弹簧的空气声压场分布来确定其机械阻抗的近似解析算法。借助有限元软件进行验证，结果表明该方法合理可行。讨论盖板质量、初始压力等因素对空气弹簧机械阻抗特性的影响，用力传递率来评估隔振效果。为深入研究空气弹簧的机械阻抗特性提供了一种新的思路。%An idealized cylinder type air-spring mode was created. Based on air wave theory, an approximate analytic algorithm for mechanical impedance of air spring was presented with calculation of air pressure. Finite element method was used to verify the result and it showed that the proposed method is feasible. The effect of the cover plate and the initial pressure to the air spring's mechanical impedance characteristics was done and the performance of isolation was assessed by the force transmissibility. The method provides a new idea for future study on the mechanical impedance characteristics of air spring.