【摘要】 利用合理的温度场、载荷谱,计算了火焰筒气膜唇边裂纹在扩展过程中最大应力强度因子Kmax的变化规律,利用Pearson经验公式预估了火焰筒热疲劳裂纹扩展速率,并给出了应力强度因子、裂纹扩展速率的初步分析结果。更多还原

【Abstract】 The change regulation of the maximum stress intensity factor Kmax of combustor liner air film lip crack in the propagation process is calculated by using reasonable thermal field and load spectrum, and thermal fatigue crack propagation velocity is estimated by means of Pearson empirical formula. Preliminary analysis results about stress intensity factor and crack propagation velocity are also shown.更多还原