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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2013.12
- 수록면
- 461 - 469 (9page)
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초록· 키워드
오류제보하기
Computer simulation with FEM is very useful to analyze hypervelocity impact phenomena that are tremendously expensive or otherwise too impractical to analyze experimentally. Shock physics can be efficiently handled by mesh adaptation which allows finite element mesh to be locally optimized to resolve moving shock wave in explosion. In this paper, an adaptive meshing technique based upon quadtree data structure was applied to resolve ballistic impact phenomena. The technique can adaptively refine a mesh in the neighborhood of a shock and coarsen the mesh for the smooth flow behind the shock according to a criterion. The criterion for refinement and coarsening is based upon the standard deviation of the gradient of shock pressure on the associated field. Shock simulation starts with the rough mesh of the pressure field and mesh density is increased locally under the criterion at each time step. The results show that the mesh adaptation enables to minimize the global computation error of FEM and to increase storage and computational saving compared to the fixed resolution of the conventional static mesh approach.
목차
ABSTRACT
1. 서론
2. 적응적 요소망 생성 방법
3. 실행 조건
4. 결과 및 고찰
5. 결론
References
참고문헌 (9)
참고문헌 신청
1. [기타자료] - Kim, I / 2006 / Explosion Phenomenon and High Pressure Physics / Physics and High Technology : 31 ~ 35
2. [학술지(정기간행물)] - 김영민 / 2011 / 가스폭발하중에 의한 터널 구조물의 동적거동해석 / 한국터널지하공간학회 논문집 13 (5) : 413 ~ 430
4. [학술지(정기간행물)] - Berger, M. J. / 1984 / Adaptive Mesh Refinement for Hyperbolic Partial Differential Equations / Journal of Computational Physics 53 : 484 ~ 512
5. [학술지(정기간행물)] - Berger, M.J / 1989 / Local Adaptive Mesh Refinement for Shock Hydrodynamics / Journal of Computational Physics 82 : 64 ~ 84
6. [학술대회논문] - Jung, M.K / 2011 / Development of a 2-dimensional Flow Solver using Hybrid Unstructured and Adaptive Cartesian Meshes / Proceedings Korean Society of Computational Fluids Engineering, Jeju : 294 ~ 301
2. [학술지(정기간행물)] - 김영민 / 2011 / 가스폭발하중에 의한 터널 구조물의 동적거동해석 / 한국터널지하공간학회 논문집 13 (5) : 413 ~ 430
4. [학술지(정기간행물)] - Berger, M. J. / 1984 / Adaptive Mesh Refinement for Hyperbolic Partial Differential Equations / Journal of Computational Physics 53 : 484 ~ 512
5. [학술지(정기간행물)] - Berger, M.J / 1989 / Local Adaptive Mesh Refinement for Shock Hydrodynamics / Journal of Computational Physics 82 : 64 ~ 84
6. [학술대회논문] - Jung, M.K / 2011 / Development of a 2-dimensional Flow Solver using Hybrid Unstructured and Adaptive Cartesian Meshes / Proceedings Korean Society of Computational Fluids Engineering, Jeju : 294 ~ 301
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