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박효근,김동만,김동현,조윤모,정재훈,Park, Hyo-Geun,Kim, Dong-Man,Kim, Dong-Hyun,Cho, Yun-Mo,Chung, Jae-Hoon 한국군사과학기술학회 2008 한국군사과학기술학회지 Vol.11 No.5
In this study, the dynamic characteristics for the wheel-type landing gear system of helicopter have been analyzed. Nonlinear multi-body dynamic models of the landing gear system are constructed and the equations of motion, kinematics and internal forces of shock strut are considered. In addition, flexibility effect of the wheel axle with equivalent beam element is taken into account. General purpose commercial finite code, SAMCEF which includes MECANO module is applied. The results of dynamic simulation for various landing and weight conditions are presented and compared with each other. Based on the results, characteristics of impact dynamic behaviors of the landing gear system are practically investigated.
CAE 기법을 활용한 3㎿급 풍력발전기 로터의 구조 및 진동해석
박효근(Hyo-Geun Park),김요한(Yo-Han Kim),김동현(Dong-Hyun Kim),김동만(Dong-Man Kim),황병선(Byoung-Sung Hwang),박지상(Ji-Sang Park),정성훈(Sung-Hoon Jung) 한국유체기계학회 2007 유체기계 연구개발 발표회 논문집 Vol.- No.-
In this study, computer applied engineering (CAE) techniques are fully used to conduct structural and dynamic analyses of a huge composite rotor blade. Computational fluid dynamics is used to predict aerodynamic load of the rotating wind-turbine blade model. Static and dynamic structural analyses are conducted based on finite element method for composite laminates and multi-body dynamic simulation tools. Various numerical results for aerodynamic load, static stress, buckling and dynamic analyses are presented and characteristics of structural behaviors are investigated herein.