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

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

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。

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.