Fracture mechanics analysis for rotating blade model of aero-engine

CHEN Ai-jun; CHEN Cheng; ZHANG Ding-guo; LIAO Lian-fang

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Fracture mechanics analysis for rotating blade model of aero-engine

更新时间：2026-07-07

- Fracture mechanics analysis for rotating blade model of aero-engine
- Vol. 26, Issue 9, (2011)
- 作者机构：
  
  1. 南京理工大学理学院,南京,210094
  2. 中国航空工业集团公司沈阳发动机设计研究所,沈阳,110015
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2011
- 稿件说明：
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CHEN Ai-jun, CHEN Cheng, ZHANG Ding-guo, et al. Fracture mechanics analysis for rotating blade model of aero-engine[J]. 2011, 26(9).
DOI：

CHEN Ai-jun, CHEN Cheng, ZHANG Ding-guo, et al. Fracture mechanics analysis for rotating blade model of aero-engine[J]. 2011, 26(9). DOI：

摘要

建立了带裂纹平板叶片的断裂力学模型.首先由已知参考均布载荷下的应力强度因子

得到了带裂纹叶片的权函数;然后根据权函数思想

推导出了高速旋转叶片裂纹尖端处的应力强度因子公式;最后

由断裂准则给出了叶片飞断时临界转速的估算方法.算例研究表明

裂纹的深度和位置对裂纹尖端处的应力强度因子和叶片飞断时的临界转速有很大的影响.

Abstract

An analysis model for the cracked plate of blade was established using fracture mechanics method.Firstly

the weight function for blade containing a single edge crack was derived from one reference stress intensity factor under uniform load.Secondly

the stress intensity factor at the tip of crack of rotating blade was calculated using weight function method.Finally

critical rotate speed of blade was inferred on the basis of fracture criterion.The analysis of examples shows that the depth and position of crack in blade have much influence on the stress intensity factor and critical rotating speed.

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Related Institution

College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics

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