摘要
针对翼身融合水下滑翔机外形的精细化参数化建模需求,提出了一种基于非均匀有理B样条(NURBS)方法的翼身融合水下滑翔机外形参数化建模方法。该方法首先采用最小二乘法对各个翼型剖面的型值点进行拟合,将各个翼型剖面的控制点作为参数化变量;然后利用偏移、比例、旋转、位置等参数化变量对各个翼型剖面的控制点进行操控,并使用NURBS曲面方程进行几何描述,实现翼身融合水下滑翔机外形的精细参数化建模。最终,通过实例分析证明了该方法的有效性。
Because of the requirement of fine parametric modeling for blended-wing-body underwater glider,a parametric modeling method of blended-wing-body(BWB)underwater glider based on non-uniform rational b-spline(NURBS)was proposed.Firstly,the least squares method is used to fit the data points of each airfoil section,and the control points of each airfoil section are taken as parametric variables.Then,the control points of each airfoil section are manipulated by the parametric variables such as offset,proportion,rotation and position,and the NURBS surface equations are used to describe the geometry of BWB underwater glider.Thus,the fine parametric modeling of the BWB underwater glider is realized.Finally,the validity of the proposed method is proved through a case study.
作者
陈旭
张代雨
王鹏
王志东
CHEN Xu;ZHANG Dai-yu;WANG Peng;WANG Zhi-dong(School of Marine Science and Technology,Northwestern Polytechnical University,Xi′an 710072,China;School of Naval Architecture and Engineering,Jiangsu University of Science and Technology,Zhenjiang 212003,China)
出处
《舰船科学技术》
北大核心
2020年第2期103-107,共5页
Ship Science and Technology
基金
国家自然科学基金资助项目(51875466,51909110)
江苏省高等学校自然科学资助项目(19KJB570001)
江苏省协同创新计划(1174871801-18)。
关键词
水下滑翔机
非均匀有理B样条
参数化建模
最小二乘法
underwater glider
non-uniform rational b-spline(NURBS)
parametric modeling
least squares
