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本文叙述了一种简单且精度较高的考虑过盈的应力计算方法。本文内容包括计算方法、程序设计及计算结果应力分析。最后阐述了离心叶轮的松动问题。一、前言为了轮轴之间的紧配合,离心式、轴流式压缩机的叶轮是红套于轴上的.也就是在装配前使叶轮的内孔半径小于轴的半径,设轴的半径比叶轮内半径大⊿(见图1a),⊿称装配半径过盈量。过大的过盈量为叶轮强度所不允许,过大的过盈量则不能保证叶轮的正常工作.由于目前离心式压缩机趋向高速化且采用无键叶轮,因此轮轴要采用大过盈量(>2‰d 轴)配合。这样,过
This article describes a simple and accurate method of stress calculation considering interference. This article includes calculation methods, program design and calculation of stress analysis. Finally, the loosening of centrifugal impeller is explained. I. INTRODUCTION In order to match the wheel hubs tightly and centrifugally, the impeller of the axial flow compressor is sleeved on the shaft, that is to say, the inner hole radius of the impeller is smaller than the radius of the shaft before assembly, and the radius ratio of the shaft Impeller large radius ⊿ (see Figure 1a), ⊿ said the assembly radius interference. Excessive interference is not allowed for the strength of the impeller, too much interference can not guarantee the normal operation of the impeller due to the current centrifugal compressors tend to speed and the use of keyless impeller, so the axle to adopt a large amount of interference (> 2 ‰ d-axis) with. This way, too