선박의 회전거동을 고려한 3자유도 충돌모델

3 DOFs bridge-vessel collision model considering with rotation behaviors of the vessel

  • 이계희 (목포해양대학교, 해양시스템공학부) ;
  • 이성로 (목포대학교, 건설환경공학부)
  • 발행 : 2008.04.17

초록

3 DOFs model for the collision analysis of a bridge super-structure and a super-structure of the navigating vessels were proposed and analyzed. The collision event between the super-structure of vessel and the super-structure of bridge are different from the normal collision event that collided at sub-structure of bridge. Because of its moment arm, the stability force of vessel could affect to the collision behaviors. To consider this effect, 3 DOFs model including two translation DOFs and one rotational DOF were introduced. The restoration forces of the collision system were considered as nonlinear springs. The equations of motion were derived if form of differential equations and numerically solved by 4th order Runge-Kutta method. The accuracy and the feasibility of this model were verified by the numerical example with parameter of moment arm length.

키워드