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핀을 가진 원통형 보강재로 보강된 구조물의 진동 특성에 관한 연구
김현수(H. S. Kim),박정호(J. H. Park),조우석(W. S. Cho),김형준(H. J. Kim),최태원(T. W. Choi) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.10
In general, the reinforcement of a structure is performed with cylinders. In this study, it is attempted to analyze the circular reinforcement with fins. And the natural frequency is investigated for the circular reinforcement between two plates. The shape of models are : one which has only circular reinforcements of different diameters and one which has circular reinforcements with fins and one which has fin of same length and circular cylinders of different diameters. And in each model, there are two kinds; one is with upper and lower plates and the other with none.
사각 평판에서 타원의 회전에 따른 응력집중계수의 변화에 관한 연구
김현수(H. S. Kim),최태원(T. W. Choi),최경호(K. H. Choi),박기훈(K. H. Park),권영석(Y. S. Kwon) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.10
Sometimes open holes are required for the function and the weight reduction of structure and machinery. However, the serious stress concentration occurs because of the geometric discontinuity caused by the holes and cutting section. In this study, it is attempted to obtain the stress concentration coefficients of the inner surface of the hole boundary by changing the rotate angle of holes on the homogeneous isotropic plate. And the effects on the plate are investigated. The results show that the stress level becomes low and the distribution area widens the position of stress concentration just at 90˚ as being the angle β increases.