Generating Parametric Gn Blending Surface with Some Constraints

被引：1
|
作者：
宋遒志
戴全辉
陈立平
钟毅芳
机构：
[1] Beijing 100074
[2] CAD Center
[3] China
[4] Huazhong University of Science & Technology
[5] Huazhong University of Science & Technology Wuhan430074
[6] The Third Research Academy of China Aerospace Science and Industry Corporation
来源：
Chinese Journal of Aeronautics | 2003年 / 02期
关键词：
过渡曲面; 切触线; 重新参数化局部基曲面; 线性组合; 约束; 优化;
D O I：
暂无
中图分类号：
V224 [机翼];
学科分类号：
082501 ;
摘要：
在 Erich Hartmann提出的由两基曲面线性组合构造 Gn连续过渡曲面方法的基础上 ,针对该方法存在很难找到合适的参数变换的问题 ,提出了一种基于基曲面局部区域重新参数化构造 Gn连续过渡曲面的方法。通过对基曲面上切触线附近区域部分曲面重新参数化 ,再由重新参数化局部基曲面线性组合构造 Gn 连续过渡曲面。这样将两基曲面间构造过渡曲面的问题转化为在重新参数化局部基曲面间构造过渡曲面。以构造 G2连续的翼身融合面为例 ,讨论了满足约束要求条件时 G2连续过渡面的构造方法。即先对基曲面上过渡切触线附近的局部区域进行重新参数化 ,后通过优化求解来确定比例因子和偏移量、平衡因子和调配因子 ,使过渡曲面满足前后边条线约束 ,最后利用线性组合来构造 G2 连续的过渡面。约束过渡曲面的形状可通过改变重新参数化基曲面的大小来调整
引用
收藏
页码：108 / 116
页数：9
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