基于 ANSYS Workbench 的某通信发射塔模态及地震响应谱分析

以某通信发射塔主体为分析对象，通过 Solidworks 建立三维实体模型，导入有限元分析软件 ANSYS Workbench进行模态仿真分析，得到了通信塔前10阶非零模态频率。进行了模拟地震作用下的位移响应谱分析，得到等效应力和方向位移云图。结果表明：通信塔的动力学特性较为复杂，模态振型具有多样性。在地震激励下，发射塔满足抗震强度要求。相关研究对该通信塔的结构优化提供了可靠的理论依据。

Modal Analysis and Seismic Response Spectrum Analysis of Communication Transmission Tower Based on ANSYS Workbench

The three-dimensional model of communication tower was established by Solidworks,and the model was simulated and analyzed by finite element analysis software Workbench ANSYS.Then the 10 order non-zero modal frequency was obtained.Finally,simulation analysis of displacement response spectrum of simulated earthquake action was carried out,and the equivalent stress and the direction of displacement were obtained.The result shows that the dynamic characteristics of the tower are complex and the modal shapes are varied.The communication tower achieves the design requirements of earthquake intensity.These conclusions provide a reliable theoretical basis for the structure optimization of the tower.