A STRESS INTENSITY FACTOR SOLUTION INSPIRED BY SOAP BUBBLES FRAMEWORK

摘要

For the design of aircraft engines in service lifeit is helpful, in terms of computing timereduction, to perform simulations withsimplified plane cracks geometries subjected tosimple loads, often polynomial. This workfocuses on a realistic method of estimating thestress intensity factor KI based on the physics ofthe phenomenon.The stress intensity factor solution is determinedfrom finite elements simulations. For each crackgeometry, for a given size of the plate in whichthe crack propagates and for a given stress fieldapplied to the plate, the stress intensity factor isdetermined with a test matrix.The aim of this paper is to give a methodologywhich leads to improve the interpolation oftabulated values of KI so that it is morerepresentative of the fracture mechanics. Forthis, a finite element based approach is used,but with shape functions more adapted to thefracture mechanics problem. The algorithm isinspired by soap bubbles mathematics.