基于非线性规划法的船舶浮态计算  

Ship floating calculation based on nonlinear programming

作　　者：马坤[1] 张明霞[1] 纪卓尚[1] 

机构地区：[1]大连理工大学船舶工程中心,辽宁大连116024

出　　处：《大连理工大学学报》2003年第3期329-331,共3页Journal of Dalian University of Technology

基　　金：教育部博士点专项科研基金资助项目(2001).

摘　　要：提出了利用非线性规划法进行船舶任意倾斜状态下浮态计算的方法,建立了以总复原力臂的绝对值为目标函数,保证排水量等于重量为约束条件,吃水、横倾角及纵倾角为设计变量的优化数学模型.与传统的矩阵方法相比较,该法在每次迭代计算中不需要计算倾斜水线面上的各要素,只需计算倾斜水线面以下的排水体积和浮心坐标,使计算量大大减少.对60000t油船在各种装载状态下浮态的计算,证明了该方法的简便和可靠性.A new approach to calculating the floatation of a ship at any angle of inclination in space is presented. Nonlinear programming is used to set up an optimization model in which the absolute value of righting lever is taken as the objective function, displacement force equaling weight is constraint, and draught, heel angle and trim angle are three variables. Compared with the traditional method for solving a Jacobian matrix, the calculating amount is greatly decreased because only displacement volume and center of buoyancy need to be computed while the elements of waterplane are not required. The computation results from an oil tanker of 60 000 tons indicate that the method presented here is convenient and reliable.

关 键 词：船舶 浮态 计算方法 非线性规划法 排水体积 浮心坐标 惩罚函数法 矩阵方法 

分 类 号：U661.21[交通运输工程—船舶及航道工程]