| Title |
Analysis of Patched Cylindrical Shells with Circumferential Through-Wall Cracks |
| Authors |
안재석(Ahn, Jae-Seok) ; 김영욱(Kim, Young-Wook) ; 우광성(Woo, Kwang-Sung) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.6A.411 |
| Keywords |
원주방향 관통균열;패치보강;등가영역적분법;가상균열 확장법;h-법;p-법 circumferential through-wall crack;patch repair;equivalent domain integral method;virtual crack extension method;h-method;p-method |
| Abstract |
In this study, behavior of unpatched and patched cylindrical shells with through-wall cracks has been estimated using numerical experiments, and patching effect of them has been investigated according to various patching parameters. To show credibility of numerical models considered, two ways such as h- and p-methods have been adopted. Also, domain integral method and virtual crack extension method have been considered to calculate energy release rates based on linear elastic fracture mechanics. For examples, the unpatched cylindrical shells with circumferential cracks under remote tension have firstly been analyzed to show the validity of finite element modeling with h-method or p-method, and then the results have been compared with literature values published. Next, the sensitive analysis of patch repaired problems in terms of thickness of patch and adhesive, shear modulus of adhesive, composite material type of patch, crack length, etc. has been carried out. |