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철근콘크리트 건물의 폭파 해석을 위한 간략 모델링 방법
김한수(Kim, Han-Soo),안재균(Ahn, Jae-Gyun),안효승(Ahn, Hyo-Seung) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.7
A new material model that can show similar structural behavior under the blast load to the precise model with reinforcement and concrete was proposed to enable the progressive collapse simulation of a tall building. Von Mises yield model was applied to represent the ductile behavior of reinforced concrete and the yield strength, failure strength and elastic modulus were determined through repetitive comparisons of the analysis results from the precise model with fine mesh and the simple model with coarse mesh. The damage distribution of the simple model with the proposed material model was quite similar to the precise model though the number of elements of the simple model was a small fraction of the precise model. The proposed modeling method can be applied effectively to the blast analysis of tall buildings.
김한수(Kim, Han-Soo),안효승(Ahn, Hyo-Seung),안재균(Ahn, Jae-Gyun) 대한건축학회 2014 大韓建築學會論文集 : 構造系 Vol.30 No.3
Erosion is fundamentally a numerical technique to overcome the problems such as large numerical errors or abrupt termination of analysis which are associated with the excessive element distortions in finite element analysis. In this paper, erosion was utilized to represent cracks and failures in the reinforced concrete structures subjected to blast or impact loads. The erosion criteria for the realistic blast simulation were suggested by comparing experiment results and numerical analysis results. Instantaneous effective strain of 0.1 was proposed as a reference erosion criteria value to show the closest failure shape to the blast experiments of reinforced concrete beams and slabs.
이상순 ( Sang-soon Lee ),최강희 ( Kang-Hee Choi ),김수빈 ( Su-bin Kim ),안재균 ( Jae-Gyun Ahn ) 한국정보처리학회 2021 한국정보처리학회 학술대회논문집 Vol.28 No.1
산모의 평균 연령이 높아짐에 따라 영양관리 및 운동에 대한 중요성이 더욱 높아졌다. 임산부는 건강관리가 중요함을 인지하고 있으나 관련 지식에 무지한 경우가 대부분이다. 본 논문에서는 위 문제를 해소하기 위한 어플리케이션을 구현한다. 임산부 일일 영양소 섭취기준과 추천알고리즘을 바탕으로 한 식단 관리, 학습된 모델을 이용한 요가자세추정 기능을 개발한다.