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집중질량 변화에 따른 수중 고속 운동체의 구조 안정성 해석
오경원(Kyung-Won Oh),서주노(Joo-No Sur),조병구(Byung-Gu Cho),류시웅(Si-Ung Ryu),공창덕(Gong-Duk Kong) 한국해양공학회 2009 韓國海洋工學會誌 Vol.23 No.1
In this paper, the effect of the position and size of a lumped mass on the structural stability of a high speed underwater vehicle is presented. For simplicity, a real vehicle was modeled as a follower force subjected beam that was resting on an elastic foundation, and the lumped mass effect was simplified as an elastic intermediate support. The stability of the simplified model was numerically analyzed based on the Finite element method (FEM). This numerical simulation revealed that flutter type instability or divergence type instability occurs, depending on the position and stiffness of the elastic intermediate support, which implies that the instability of the real model is affected by the position and size of the lumped mass.