摘要
提出了一个三维钝裂纹的计算模型，并建立了适用于这类模型的边界元法程序。还利用现有的疲劳裂纹扩展模型，对含三维钝裂纹构件的剩余疲劳寿命估算方法进行了讨论，并对三维钝裂纹在空气和海水中的扩展进行了计算。研究表明，本方法和边界元程序，既适用于三维尖裂纹的剩余寿命估算，也适用于三维钝裂纹的剩余疲劳寿命估算。
A calculation model for 3-D blunt cracks in proposed and the corresponding boundary element method(BEM)computer program system is also established.The corrosion fatigue life calculation method for components with 3-D blunt crack is discussed using available model for fatigue crack growth.Calculations are for 3-D plates with surface blunt crack in air and in sea water.The results show that both the method and the BEM program proposed are val-id for both fatigue growth ofsharp cracks and fatigue growth of 3-D blunt cracks.
出处
《航空学报》
EI
CAS
CSCD
北大核心
1994年第3期269-274,共6页
Acta Aeronautica et Astronautica Sinica
基金
上海市科委自然科学基金
关键词
三维钝裂纹
应力腐蚀疲劳
裂纹扩展
D blunt crack, stress-corrosion fatigue,boundary element method(BEM),stress intensity factor(SIF)
