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中文摘要：
本文以某型通风机为研究对象，使用Ansys有限元软件分别计算了采用不同过盈配合规格时某风机转子的松脱转速，并根据第四强度理论校核了应力。通过对比分析，得到了适合该风机转子的过盈配合规格。不仅为通风机转子松脱转速分析提供了新方法，还为过盈配合规格的选择提供了理论依据。
英文摘要：
The rotational speeds with loose fit of the ventilator rotor are calculated in different interference fits by ANSYS Finite Element software, and the stresses of the rotor with different interference fits are checked by the fourth strength theory.The best interference fit is identified by comparison with various interference fits. A new numerical method is proposed for the analysis of The rotational speeds with loose fit of ventilator rotor. Moreover, the results can provide a theoretical basis for the best choice of interference fits.
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