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서형석(Hyung Seok Seo),신동욱(Dong Wook Shin),고제성(Je-sung Koh) 국방로봇학회 2024 국방로봇학회 논문집 Vol.3 No.1
Among the various locomotions of living creatures, jumping is a very effective means of catching prey or escaping a crisis situation. Jumping robots can perform missions more efficiently than simple walking robots in disaster or environmental monitoring sites with many complex obstacles and rough terrain. Bending and Torsion jumping robots can have the greatest stiffness through a design that sets the active coil number to 1 rather than the energy storage structure using simple bending energy or springs that have been used to date. The Bending and Torsion robot is 10cm in size and can jump 20 times its body length. It has very high jumping height-to-weight ratio and high energy efficiency at the small scale. By applying a design with the active number of the coil spring to 1, high stiffness was utilized, and the large deformation of the coil spring and the buckling that occurred were applied to modeling.
멀티 스케일 다중 전개형 협업 로봇을 위한 요소 기술 개발
주종남(Chong Nam Chu),김한(Haan Kim),김정률(Jeongryul Kim),송성혁(Sung-Hyuk Song),고제성(Je-Sung Koh),허승주(Sungju Huh),하창수(ChangSu Ha),김종원(Jong Won Kim),안성훈(Sung-Hoon Ahn),조규진(Kyu-Jin Cho),홍성수(Seong Soo Hong),이동준(Do Korean Society for Precision Engineering 2013 한국정밀공학회지 Vol.30 No.1
직교 적층 쌍안정 복합재의 원통형상 형판을 이용한 곡률 제어 및 해석
류정현(Junghyun Ryu),이종구(Jonggu Lee),김승원(Seung-Won Kim),고제성(Je-Sung Koh),조규진(Kyu-Jin Cho),조맹효(Maenghyo Cho) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
Curing the bi-stable plate on the curved tool-plate is an attractive process in order to tailor the final curvature of unsymmetric laminates since there is no extra complicated process needed. Especially, in the case of cross-ply laminates, cylinder shape tool-plate shows additional advantages for curvature tailoring because final cured curvatures are controllable. Green-Lagrangian nonlinear strain field is assumed, which is based on Kirchoff-Love thin plate assumption. Unknown coefficients in the strain field are determined by minimizing the strain energy. We propose the explicit approximation method based on the fact that final shape of unsymmetric laminate is cylinder. The proposed approximation solutions are compared with the results of conventional strain energy minimization method and experiments for verification.