최적 설계법을 이용한 구조물 안전을 위한 질량 감소 연구 = A Study on the Masses Reduction for the Structural Safety Using Optimal Design Method

다국어 초록 (Multilingual Abstract)

This paper is presented that theoretical optimization design method in order to consider mass reduction for the structural safety. In this paper, it described methods for reducing vibration in structural safety by the determination of the optimum sizes and locations of running masses through formal mathematical optimization techniques. The optimization procedure which employs the tunning masses and corresponding locations is developed. Design variables are systematically changed to achieve low values of shear without a large mass penalty. Three optimazation methods are developed and tested. The first is based on minimizing the modal shaping parameter which indirectly reduce the modal shear amplitudes corresponding to each harmonic of airload. The second method reduces these amplitudes directly and the third method reduces the shear as a function of time during a revolution of the blade. The first method works well for reducing the shear for one mode responding to a single harmonic of the airload but has been found in some bases to be ineffective for more than one mode.