Damage Tolerance Of The Object-oriented Analysis, Design, Implementation And Application

As the damage tolerance technique has being widely and deeply adopted in the design and life prediction of aircraft structures, the development of high performance and more suitable software used in damage tolerance design and assessment is more urgent. While at the same time the existing domestic software is not well suitable for requirements in engineering. For the fine solution of this problem, the author has made an attempt to introduce the object-oriented technique to damage tolerance analysis. A set of basic and auxiliary classes, based upon some important concepts of object- oriented technique, which can be directly used for the development of programs of damage tolerance analysis has been designed and implemented by C++ language. Then an integrated application program including some functional modules such as residual strength analysis, crack growth analysis, principle structure elements database management, material properties database management etc, with friendly interfaces and favorable windows styles, is developed by using these classes. Finally all of the typical structures described in the "Damage Tolerance Design Handbook" have been analyzed. Some examples are given.The work of this thesis has shown that the object-oriented damage tolerance program does require much less time and is indeed more suitable than procedure-oriented programming in damage tolerance analysis of engineering structures. Furthermore, the damage tolerance analysis classes have excellent ability in hierarchy and extension, so they are great valuable in engineering and will be used more widely in the future.