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大韓造船學會 論文集 = Journal of the society of naval architects of korea, v.57 no.1, 2020년, pp.23 - 34
(부산대학교 조선해양공학과) , 신우진 (부산대학교 조선해양공학과) , 김동현 (부산대학교 조선해양공학과) , 박종천 (부산대학교 조선해양공학과) , 정성엽 (한국해양과학기술원 부설 선박해양플랜트연구소)
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This paper covers the development of prediction techniques for ice load on ice-breakers operating in continuous ice-breaking under level ice conditions using particle-based continuum mechanics. Ice is assumed to be a linear elastic material until the fracture occurs. The maximum normal stress theory...
| 핵심어 | 질문 | 논문에서 추출한 답변 |
|---|---|---|
| 얼음을 탄성체로 가정하여 탄성체 거동을 계산하기 위해 사용한 알고리즘은 무엇인가? | 본 연구에서는 얼음을 탄성체로 가정하여 입자법 기반인 MPS(Moving Particle Semi-implicit)법의 구조해석 모델(Hwang et al., 2013, 2014, 2016; Ren et al., 2019)에 기반한 수치 알고리즘을 적용하여 탄성체 거동을 계산하였다. 평탄빙의 굽힘 파괴(bending failure)에 대한 판정기준으로는 maximum tensile stress criterion을 적용하였다. | |
| MPS법이란 무엇인가? | MPS법(Koshizuka & Oka, 1996)은 원래 비압축성 자유표면 유동 해석을 위해 개발된 무격자 수치 방법 중 하나이며, 지배 방정식의 편미분 연산자를 가중치 함수(weight function) 기반으로 이산화된 편미분 연산자로 대체하여 대수 연립 방정식으로 변환한 뒤 시간 전진에 따라 근사적인 해를 구해 나간다. Chikazawa et al. | |
| 탄성체 거동을 계산하기 위해 굽힘 파괴에 대한 판정기준으로 사용한 것은 무엇인가? | , 2019)에 기반한 수치 알고리즘을 적용하여 탄성체 거동을 계산하였다. 평탄빙의 굽힘 파괴(bending failure)에 대한 판정기준으로는 maximum tensile stress criterion을 적용하였다. 즉, 입자의 최대 주응력 값이 파괴 기준을 초과하면 파괴가 발생한 것으로 판정한다. |
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