具非对称截面单体的双体船的对称波激响应

RESPONSE OF A CATAMARAN WITH ASYMMETRIC CROSS SECTION HALF-BODY IN SEA WAVE

本文研究了具非对称截面单体的双体船的对称波激响应,包括船体的刚体运动,即升沉和纵摇(沿纵向铅垂面的垂向平移及绕重心的转动),以及振动。一方面由于船体截面的主惯性轴与船体的升沉运动不重合,即振动平面与刚体运动平面不重合。另一方面由于两个单体是通过两个定点相互约束的(即每个单体不但受分布的外荷而且受到集中的外荷),从而使得按照Bishop的水弹性理论研究此波激响应问题变得不可行了。本文推导出此类问题的运动微分方程,提出了解决此类问题水动力的计算方法,把Bishop的理论向前推进了一大步。并对一条对开式泥船进行了计算。

This paper studies the dynamic response (including the ship motion andvibration of the half-body) of a catamaran with asymmetric cross section half-body in head wave condition. Since the principal inertia axis of the cross section does not coincide with the direction of the ship motion, the two half-bodies are restrained by each other through two fixed pcints, studying the response by BISHOP'S THEORY of hydroelasticity of ships [1] is dif-ficul. In this paper, the hydroelasticity motion differential equation of this kind of ships has been deduced and a calculating method for hy drodynamic coefficients has been presented. An example of calculating the response of a self-propelled-splitting hopper barge has been gi-