【摘要】 叶片作为通风机的关键部件,直接影响着通风机的运行状态。以正常叶片作参考,使用Hyper Mesh和ANSYS分别对叶片局部断裂与后缘磨损等故障情况进行模态分析,确定了叶片前6阶振型位移和固有频率。通过计算振型位移和固有频率的相关参数,得到了不同故障状态下的故障特征。本研究可为判断通风机叶片是否出现故障以及可能的故障类型提供一种方法。更多还原

【Abstract】 As a key component of the ventilator, the blade affects the operation condition of the ventilator directly. The normal blade served as the basis of reference, the modal analysis on partially-ruptured blade and trailing edge worn blade was conducted separately in Hyper Mesh and ANSYS, thus the displacement and natural frequency of preceding six orders of the blades were determined. After calculating relevant parameters of displacement and natural frequency of the vibration modes, failure features in various failure modes were obtained. The results offered a method for judging whether the ventilator blade was failed or identifying the type of possible failure.更多还原