精度可控的边界表示模型网格生成  

Precision controllable mesh generation for boundary representation model

作　　者：曾铮 贾晓红 辛士庆 严冬明[3,4] ZENG Zheng;JIA Xiaohong;XIN Shiqing;YAN Dongming(Institute of Systems Science,Academy of Mathematics and Systems Science,Chinese Academy of Sciences,Beijing 100190,China;School of Computer Science and Technology,Shandong University,Qingdao 250100,China;State Key Laboratory of Multimodal Artificial Intelligence Systems,Institute of Automation,Chinese Academy of Sciences,Beijing 100190,China;State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]中国科学院数学与系统科学研究院系统科学研究所,北京100190 [2]山东大学计算机科学与技术学院,山东青岛250100 [3]中国科学院自动化研究所多模态人工智能系统全国重点实验室,北京100190 [4]清华大学水沙科学与水利水电工程国家重点实验室,北京100084

出　　处：《浙江大学学报（工学版）》2024年第2期257-267,共11页Journal of Zhejiang University：Engineering Science

基　　金：国家重点研发计划资助项目(2020YFB1708900);国家自然科学基金委优秀青年基金资助项目(12022117);国家自然基金资助项目(2022117,62272277,62172415);中国科学院稳定支持基础研究领域青年团队计划资助项目(YSBR-034);清华大学水沙科学与水利水电工程国家重点实验室开放基金资助项目(sklhse-2022-D-04)。

摘　　要：针对边界表示模型生成的面网格模型存在的误差大、分辨率高和不水密的问题,提出针对计算机辅助设计(CAD)实体模型的保精度网格生成算法.算法通过同步生成对齐共边点对保证网格的水密性;利用连续表征设计网格目标边长,以生成高精度、低分辨率的网格.与现有的开源网格生成软件相比,算法能用更少的网格面片数生成精度更高的网格,且网格质量与其相当.A precision-preserving mesh generation algorithm for computer aided design(CAD)solid models was proposed aiming at the issues of large errors,high resolution and non-watertightness in the surface mesh models generated by boundary representation models.The watertightness of the mesh was ensured by synchronously generating aligned pairs of vertices on shared curves.A continuous representation was utilized to design the target edge length of the mesh,resulting in a high-precision,low-resolution mesh.The algorithm can achieve higher-precision meshes with fewer mesh faces,while maintaining comparable mesh quality compared to existing open-source mesh generation software.

关 键 词：边界表示模型 网格生成 水密性 精度优化 网格分辨率优化 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]