基于ABAQUS某汽车空气滤清器的模态分析及结构优化
Modal Analysis and Structural Optimization of a Car Air Filter Based on ABAQUS

汽车空气滤清器是汽车进气系统的重要零件，其在工作过程中由于受到汽车发动机的激励以及汽车行驶过程中所产生的振动会影响空气滤清器的寿命，导致其破坏和疲劳失效。为研究某汽车空气滤清器的振动特性，首先，本文在三维软件SolidWorks中建立了空气滤清器的三维模型。然后，基于有限元方法，将其导入仿真软件ABAQUS中进行约束模态分析，对空气滤清器的固有频率和振型进行了详细分析及讨论。最后，在保证空气滤清器性能参数不变的前提下，对现有的空气滤清器提出3种结构优化方法并进行分析。为进一步解决现有空气滤清器振动问题提供理论基础，为空气滤清器的结构改进方向提供参考。
Automobile air filter is an important part of automobile intake system. It will affect the service life of air filter and lead to damage and fatigue failure due to the excitation of automobile engine and the vibration generated during automobile driving. In order to study the vibration characteristics of an automobile air filter, firstly, establish the three-dimensional model of the air filter in the three-dimensional software SolidWorks. Then, it is imported into the finite element simulation software ABAQUS for constrained modal analysis based on the finite element method, and the natural frequency and vibration mode of the air filter are analyzed and discussed in detail. Finally, on the premise of keeping the performance parameters of the air filter unchanged, three structural optimization methods for the existing air filter are proposed and analyzed. It provides a theoretical basis for further solving the vibration problem of the existing air filter and provides a reference for the structural improvement direction of the air filter.