用能量法计算涡轮盘偏心孔边局部应力

AN ENERGY METHOD FOR CALCULATING THE LOCAL STRESS AT AN ECCENTRIC HOLE IN A TURBINE DISK

为在弹塑性状态下计算孔边局部应力,本文基于能量法则,推导出计算孔边局部应力的方法。本文的方法简单实用,准确度较修正诺伯法计算结果要高,文中附有涡轮盘偏心孔的计算实例,并对计算结果进行了分析。

A new method based on energy principle is derived to calculate local stress at an eccentric hole in a turbine disk under the elasto-plastic conditions. This method is not only simple and practical, but also able to obtain more accurate results than those calculated by the modified Neu-ber method. A numerical example is also presented in this paper.