| 제목 |
열림 파괴양식에 대한 구조물의 형상 최적화 |
| 분야 |
재료 및 RECYCLE |
| 언어 |
Korean |
| 저자 |
한석영(한양대학교), 송시엽(한국철도차량연구소) |
| Key Words |
Shape optimization(형상 최적화), Growth-strain method(성장-변형률법), Fatigue life(피로수명), Opening mode(열림 모드) |
| 초록 |
Most of mechanical failures are caused by repeated loadings and therefore they are strongly related to fatigue. To avoid the failures caused by fatigue, determination of an optimal shape of a structure is one of the very important factors in the initial design stage. Shape optimization for three types of specimens, which are very typical ones in opening mode in fracture mechanics, was accomplished by the linear elastic fracture mechanics and the growth-strain method in this study. The linear elastic fracture mechanics was used to estimate stress intensity factors and fatigue lives. And the growth-strain method was used to optimize the shape of the initial shape of the specimens. From the results of the shape optimization, it was concluded that shapes of three types of specimens optimized by the growth-strain method prolong their fatigue lives very much. |
| 원문(PDF) |
다운로드
|
