栅格法三维六面体网格自动生成算法与优化  

Grid-based automatic generation algorithm and optimization of three-dimensional hexahedral meshes

作　　者：黄丽丽[1] 赵国群[1] 马新武[1] 张洪梅[2] 

机构地区：[1]山东大学模具工程技术研究中心,济南250061 [2]北京理工大学材料科学与工程学院,北京100081

出　　处：《塑性工程学报》2009年第3期187-191,共5页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助课题(50875155)

摘　　要：提出了以栅格法六面体网格生成为基础方法,基于实体模型几何特征的六面体网格自适应生成算法,首先对模型进行识别,根据实体模型几何特征建立加密源点信息场,并进行相容性控制,采用栅格法生成核心网格,然后进行核心网格与模型边界的拟合,为克服该方法在实体模型表面网格质量较差的缺点,采用节点位置平滑和拓扑关系优化对网格质量进行优化,生成质量较高的六面体网格。网格划分实例表明,该方法实用性强,效果良好。The method for the adaptive generation of hexahedral element mesh with grid-based approach is presented, based on the geometric features of solid model. The first step is to identify CAD model and construct the refinement information fields of the source points based on the geometric features of solid model, then generate the core mesh. Secondly, match the mesh to the characteristic boundary of the solid model. To handle the degenerated elements and improve the quality of the resulting mesh, mesh smoothing and topology optimization are employed. The effectiveness and robustness of the algorithm are tested through the applications.

关 键 词：六面体网格 自适应 边界拟合 优化 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]