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김지인(Kim Jee-In),이재홍(Lee Jae-Hong) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
The purpose of this study is to analyze the free-form membrane based on nonlinear analysis for form-finding and to propose the interface method between commercial CAD and CAE. As the numerical example, the hexagon free-form membrane is designed by commercial CAD. According to the free-form membrane that is obtained by loading a horizontal, flexible membrane with self-weight, it is deformed with large displacements. The VRML format and IGES format interact on each other to visualize the accurate geometry of form-finding result. Namely, this study proposes the interface method to express the form-finding result due to the nonlinear analysis of membrane exactly.
햅틱 장치를 이용한 비강 모델 변형 및 수치해석적 연구
서안나(Anna Seo),조계환(Gyehwan Jo),김성균(Sung-Kyun Kim),정승규(Seung-kyu Chung),김지인(Jee-In Kim) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
In order to investigate causes of nasal discomforts during respiration, many numerical analysis methods have been utilized for analyzing nasal air flows. The results of the numerical analysis can be used in surgical treatments for removing the cause of discomforts of patients in clinical practice. In this study, numerical analysis methods with three-dimensional nasal cavity models were performed. The analysis models were generated by two different methods. The first method is called as a two-dimensional virtual surgical simulation with CT images and the nasal cavity model was constructed by deforming the CT images. The second method is called as a three-dimensional virtual surgical simulation based on a haptic device, because the surgical simulation can be directly exercised on the three-dimensional nasal cavity model. The two methods were executed and their performances were compared. It was demonstrated that the three-dimensional virtual surgical simulation could be completed in a single day while the two-dimensional virtual surgical simulation was completed a single week.