국내 최대 기계 및 로봇 연구정보

NDSL학술지

NDSL학술지 제목 게시판 내용
제목	금속 적층 제조 격자 구조물의 압축 변형 거동 및 재구조화에 대한 실험적 분석
저자	진칭예 강동석 연시모 손용 박상후
초록	We studied compressive behavior of two types of lattice structures having small-scale struts fabricated by utilizing a metal additive manufacturing process. Generally known, the lattice structure has some advantages such as lightweight and high specific mechanical strength, allowing diverse potential applications in the aerospace and mobility industries. In this work, we proposed two types of lattice such as body-centered truss (BCT) and octahedral truss (OCT) that were designed and fabricated for a compression test. From the experimental results, the OCT has much higher strength than the BCT, and all cases showed several buckling modes during the compressive behavior. Furthermore, 'restructuring' occurred with BCT, and the compressive force increased overall but fluctuated due to the restructuring by an increase of compression. Through this work, we found out that the BCT has the interesting compressive behaviors, and a repetitive bucking-restructuring was found. In fact, its strength could be increased continuously by the restructuring during compression. In conclusion, the BCT has key-characteristics of lightweight and re-strengthening, which are applicable to various applications in the industry.
저널명	한국정밀공학회지
VOL	37
PAGE	pp.625-631
발표년도	2020
논문	논문보기