摘要
针对四边形网格生成中已有算法选择基段的程序复杂、计算量大,且选择的可能不是最优基段等问题,提出一种在区域划分基础上选择基段的算法。利用网格修正方法,优化不利于网格转化的三角网格;在平坦区和非平坦区分别采用最适宜的基段选择方法,使算法得到简化,并增加选择出最优基段的概率。汽车模具的实验结果表明,三角网格质量有明显改善,网格转化的效率有较大提升,生成的四边形网格匀称,存在相对较少质量差的四边形单元。
In view of the problems that the process of base segments selected by existing algorithms is complicated and involves a large amount of calculation, furthermore optimal base segments may not be selected, a base segment-selecting algorithm based on region division was then put forward. Mesh correction was used to optimize background triangular mesh quality. For even area and uneven area, the most appropriate way for selecting base segment was utilized respectively, thus the algorithm was simplified, and the probability of selecting the optimal base segments was enhanced. The experimental results of auto model show that the quality of background triangular mesh is obviously improved, the efficiency of generating quadrilateral mesh is promo- ted greatly, and all-quadrilateral mesh obtained is well-proportioned, the number of quadrilateral elements with poor quality is fewer.
出处
《计算机工程与设计》
北大核心
2015年第9期2401-2405,2426,共6页
Computer Engineering and Design
基金
国家自然科学基金项目(51065021
51365037)
关键词
网格转化
三角网格
四边形网格
网格优化
前沿段分级
mesh conversion
triangular mesh
quadrilateral mesh
mesh optimization
front segment gradation
