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自由形态空间网格结构是指结构整体几何形态不能用解析函数精确表达或拟合,并能以任何方式自由变化的空间网格结构,具有形式多样化和自由化的特点,但其网格划分存在一定的难度.本文总结以往的研究成果,将其归纳和汇总为三种自由形态空间网格结构建模的思路,然后总结并分析比较了用于自由形态网格生成的典型方法的特点、性能及其应用,总结了网格质量的衡量指标及网格优化方法,同时对曲面造型方法及曲面优化方法进行介绍,最后对自由形态空间网格结构建模技术的发展做出展望.
Free-form space grid structure refers to the structure of the overall geometry can not be analytic functions accurately expressed or fitted, and can be freely changed in any way spatial grid structure, with the form of diversification and liberalization characteristics, but the mesh There are some difficulties.This paper summarizes the previous research results, summarizes and summarizes the ideas for modeling three kinds of free-form spatial grid structure, and then summarizes and analyzes the characteristics of typical methods for free-form grid generation, Performance and its application. The paper also summarizes the measurement index of grid quality and the method of grid optimization. At the same time, it introduces the method of surface modeling and the method of surface optimization. Finally, it forecasts the development of free-form spatial grid modeling technology.