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为研究风机轮毂断裂的原因,对风机叶片和轮毂进行强度与疲劳气固耦合分析。运用ANSYS Workbench平台和CFX软件对风机轮毂和叶片等结构强度进行研究,并提出改进结构。结果显示:轮毂瓣中间的小孔是导致轮毂断裂的主要原因;新风机轮毂(5小孔)的强度和疲劳寿命均优于原风机轮毂(4小孔)。风机试验验证了该分析的有效性和准确性。
In order to study the reason of blower hub fracture, the strength and fatigue gas-solid coupling analysis of fan blades and hubs was carried out. Using the ANSYS Workbench platform and CFX software to study the structural strength of the fan hub and blades, and to improve the structure. The results show that the small hole in the middle of the wheel lobe is the main reason for the breakage of the hub. The strength and fatigue life of the new fan hub (5 holes) are better than those of the original fan wheel (4 holes). Fan tests verify the validity and accuracy of the analysis.