CAJ | 학술논문

为提高船舶浮态计算的精度，提出一种基于加密数字型值表的船舶浮态计算修正方法。在常规浮态计算方法的基础上采用Nowton迭代法进行修正。将计算机图形学的SH多边形剪裁算法用于横剖面与水线面的求交。基于坐标系仿射变换将空间倾斜水线面降到二维，将倾斜水线面轮廓提取问题转换成二维多边形凸包求解问题。在此基础上详细给出了雅克比矩阵系数的求解方法。以散货船“太行128”为例，对五种典型载况进行了计算，结果表明该修正方法适用于船舶小纵倾和大纵倾的情况，提高了计算精度，具有一定的工程应用价值。
위제고선박부태계산적정도，제출일충기우가밀수자형치표적선박부태계산수정방법。재상규부태계산방법적기출상채용Nowton질대법진행수정。장계산궤도형학적SH다변형전재산법용우횡부면여수선면적구교。기우좌표계방사변환장공간경사수선면강도이유，장경사수선면륜곽제취문제전환성이유다변형철포구해문제。재차기출상상세급출료아극비구진계수적구해방법。이산화선“태행128”위례，대오충전형재황진행료계산，결과표명해수정방법괄용우선박소종경화대종경적정황，제고료계산정도，구유일정적공정응용개치。
In order to improve the calculation accuracy , a modified method based on Densified Table of Offsets was pro-posed.On the basis of the conventional calculation method , Newton iterative method was used to correct the result .SH clipping algorithm was used to calculate the intersection of the transverse sections and water plane .Affine transformation was used to change inclining water plane to 2D polygon, changing the contour extraction problem into the problem of how to find the convex hull .An accurate method was presented to calcu-late the coefficient of Jacobi matrix .Bulk carrier “Taihang 128” was taken as an example , five kinds of typical load con-ditions were calculated .Results indicate that this modified method, which has high accuracy , can be applied to ship in little and large trim condition , and has a certain practical ap-plication value .