航空学报 > 1995, Vol. 16 Issue (2): 75-77

飞机结构设计阶段估算谱载下裂纹扩展模型参数的优化方法

剡鸿甲, 刘文   

  1. 北京航空航天大学5 系, 北京, 100083
  • 收稿日期:1994-04-28 修回日期:1994-07-20 出版日期:1995-04-25 发布日期:1995-04-25

AN OPTIMUM METHOD FOR ESTIMATING PARAMETERS OF CRACK GROWTH MODEL UNDER LOAD SPECTRUM IN AIRCRAFT STURCTURE DESIGN

Yan Hongjia, Liu Wenting   

  1. Fifth Department of Beijing Uvinersity of Aeronautics and Astronautics,Beijing,100083
  • Received:1994-04-28 Revised:1994-07-20 Online:1995-04-25 Published:1995-04-25

摘要: 提出在短周期谱载荷下,飞机结构设计阶段,裂纹扩展模型da/dt=Qab参数的估算法,此法可以依据材料参数、载荷谱和结构的几何特征使用优化设计方法计算。

关键词: 裂纹扩展, 载荷谱, 优化

Abstract: A parameter-estimation method of crack growth model da/da=Qa b under the short-cycle loading spectrum is presented,which can be used in aircraft structure design.The estimation can be conducted by using optimum design procedure,based on material parameter,load spectrum and structural geometry.

Key words: crack growth, load spect rum, optimizat ion

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