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강기준(Kijun Kang),김병삼(Byeongsam Kim) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
DQM(differential quadrature method) is applied to computation of eigenvalues of the equations of motion governing the free in-plane vibration for circular curved beams including mid-surface extension and shear deformation. Fundamental frequencies are calculated for the members with various end conditions and opening angles. The results are compared with numerical solutions by other methods for cases in which they are available. The differential quadrature method gives good accuracy even when only a limited number of grid points is used.
강기준(KiJun Kang),박철영(CheolYoung Park) 한국산업정보학회 2021 한국산업정보학회논문지 Vol.26 No.2
본 논문에서는 3D 프린팅 기술과 적정기술들을 활용하여 상대적으로 가격이 저렴하면서도 동작이 정교한 3D 프린팅 전자 의수를 개발한다. 하드웨어 설계는 손 부분은 물론 팔 부분까지 의수의 전반적인 외형을 대상으로 한다. 오픈소스 기반의 아두이노 보드를 사용하여 누구나 쉽고 저렴하게 제작할 수 있도록 새로운 설계 환경을 구축한다. 하드웨어 제작은 3D 프린터 장비와 PLA 필라멘트 재료를 사용한다. 저비용으로 제작되지만, 비례제어 기술과 논 와이어 방식으로 손가락의 자유도를 높일 수 있게 구현하였다. 제작된 전자 의수는 향후 시스템 사양의 재구성이나 변경시 적절한 수정 및 보완을 할 수 있고, 절단 장애인들의 상태에 맞게 하드웨어 변형도 가능하다. In this paper, using 3D printing technology and appropriate technologies, we develop a 3D printing electronic prosthesis that is relatively inexpensive and has precise operation. The hardware design targets the overall appearance of the prosthesis from the hand to the arm. A new design environment is built so that anyone can easily and inexpensively produce an Arduino board based on open source. Hardware production uses 3D printer equipment and PLA filament material. It is manufactured at low cost, but the proportional control technology and the non-wire method are implemented to increase the degree of freedom of the fingers. The manufactured electronic prosthetic can be appropriately corrected and supplemented when reorganizing or changing system specifications in the future, and hardware modification to suit the condition of the amputated handicapped.
김영우(Young-Woo Kim),강기준(Kijun Kang),정준오(Junoh Jung) 대한기계학회 2009 大韓機械學會論文集A Vol.33 No.11
The slab(flat) truss plate used for building construction is analyzed for vibration and noise. Using floor impact test and numerical method (FEM), both net form and traditional form are compared for vibration and noise. The results show that the frequencies of a net form are lower than those of a traditional form in the case of free vibration, and the noise values of a net form are lower than those of a traditional form for the range from 500 ㎐ to 2000 ㎐.
EV차량의 Upper Body와 Sub Frame의 정면충돌해석에 관한 연구
김병삼(Byeong Sam Kim),노일환(Ilwhan Nho),송연민,강기준(Kijun Kang),박경우(Kyongwoo Park) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
Crashworthness of a strcuture is complicated system and individual performance of parts do not necessary compare frame. For the stucrural analysis of frontal sub-frame and uppr body, FEM is used since it is the most widely used. In this paper, the main objective of this works is replace the EV vehicle front sub frame and upper body with better design and aluminum material instead steel and study its effect on occupant kinematics. This Vehicle is tested for full frontal rigid barrier according to NCAP for 35 Mph..
Effect of Propeller-propulsion on Aerodynamic Characteristics of WIG-Craft
박경우(Kyoungwoo Park),이주희(Juhee Lee),홍철호(Chol-Ho Hong),강기준(Kijun Kang),안종관(Jong-Kwan Ahn) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Numerical investigations for the 3-dimensional WIG effect vehicle with DUP (direct underside pressurization) have been performed to analyze aerodynamic characteristics and static height stability. The computational model is consisted of all compartments of a WIG effect vehicle such as propeller, fuselage, air chamber, main wing, and tail. Increased pressure under the fuselage by DUP-device( propeller and air chamber) can considerably reduce the take-off speed and thus minimize the effect of the hump drag which is one of the technical difficulties of the WIG effect vehicle, while the vehicle can be accelerated to take off on water. The accelerated air by the propeller comes into the air chamber through the channel at the middle of the fuselage and it results in an augmentation of the lift by changing its dynamic pressure to static one. Additionally, the DUP-device is not favorable for both stability and aerodynamic performance of the WIG effect vehicle because the accelerated air produces an excessive drag, negative pitching moment and 3-dimensional effects (that is, yawing and rolling moments). The result shows that the effect of yawing and rolling moments is not serious.