基于Ansys的悬臂式簧片振动模态仿真和分析

Simulation and analysis of vibration mode of cantilever reed based on Ansys

运用Ansys软件对悬臂式簧片振动模态进行了有限元分析,得到簧片十阶之内的振动频率和振型变化,并将仿真结果与Matlab计算结果进行比较,同时考察了长度、宽度和厚度变化对簧片模态的影响规律,并采用响应面分析法得到长度、宽度和厚度与簧片基频之间的回归方程及各因素对基频的影响显著性。结果表明,簧片的振动频率随着阶次的增加而增大;Ansys仿真得到的频率和振型变化与Matlab计算结果基本一致,误差较小;振动频率随长度和宽度的增加而减小、随厚度的增加而增大;簧片长度和厚度对基频的有显著影响,而宽度对基频的影响不大,影响显著性顺序为：长度〉厚度〉宽度。本研究可为悬臂式簧片的结构设计及动态特性分析提供理论依据。

The finite element analysis on the vibration mode of cantilever reed is investigated using Ansys software. Ten vibration frequencies and modes are presented and the results obtained by Ansys software are compared with those obtained by Matlab software. The influence of length, width and thickness of reed on mode is researched. Besides, the regression equation and impact significance order between length, width, thickness and fundamental frequency are founded and acquired. The results reveal that： the vibration frequency increases with the increment of the order. The vibration frequencies and modes gained by Ansys software remarkably match with those gained by Matlab software with little error. The vibration frequency decreases with increasing the length and width while increases with increasing the thickness. The length and thickness have obvious impact on the fundamental frequency of reed which the width has little impact on. The impact significance order is： length thickness width. This study could provide a theoretical basis for the structural design and dynamic characteristic analysis of cantilever reed.