일축압축하 결정질암석 공시체에서의 응력분포 및 파괴에 대한 연구

• 발행기관: 대한자원환경지질학회
• 저자명: 정교철
• 간행물 정보: 『자원환경지질』32권 1호, 93~100쪽, 전체 8쪽
• 주제분류: 자연과학 > 지질학
• 파일형태: PDF
• 발행일자: 1999.02.28

영문 초록

In rock, there are many microsopic structures which influence the mechnical behavior of rock. Many microstructures interact with each other, and furthermore, material constants vary discontinuously within rock, as most rocks are composed of several minerals. Taking into account this feature, it may be possible to contemplate a microstructure of rock as a unit cell by which the rock is constituted periodically. If this idealization is acceptable, the homogenization method can be applied. In this research, various microcracks on rock specimens were observed through a stereoscopic microscope under uniaxial compression. On the other hand, local stress distribution in the periodic-micro structure was calculated by the homogenization method. Then it is shown that there is a possibility to establish a relation between the behavior of microcrack and macroscopic load quantitatively by the linear fracture mechanics.

키워드

미세구조 취성거동 균열 광물결정 통계학적방향성 응력이력 모델화 수학적균질화모델 국소적응력분포