大型有限元网格模型的快速简化与交互绘制  

Fast simplification and interactive rendering for large FEM mesh model

作　　者：高峰[1] 武殿梁[1] 程奂翀[1] 范秀敏[1] 

机构地区：[1]上海交通大学计算机集成制造研究所,上海200240

出　　处：《机械设计与制造》2011年第4期15-17,共3页Machinery Design & Manufacture

基　　金：上海市信息化专项资金项目(B4201D)

摘　　要：随着有限元分析计算的复杂化,计算结果的数据量大大增加甚至超出内存限制。提出一种基于外存的多分辨率构建和绘制算法,采用自适应性二叉树对模型的包围盒进行划分,自底层向上简化网格数据及物理数据,构建模型的多分辨率层次结构,较好地保持了原始细节分布;在实时绘制时,采用基于视点的细节层次选择策略进行模型的跟新。实验结果表明,该算法计算速度较快,可以对大型有限元网格模型进行快速绘制并显示其物理计算结果。With the growth of Complexity for FEM analysis,the amount of data increases significantly even beyond the memory limit.It proposes a novel approach out-of-core for multi-resolution constructing and rendering for massive FEM meshes.It makes adaptive bintree partitions of the mesh bounding box and keeps the details of the original model.Meshes are simplified bottom-up.At rendering stage,the multi-resolution representation structure is refined and rendered with view-dependent LOD selection.Experimental results show that the proposed approach is fast,can make a quick draw of the meshes and the physical data.

关 键 词：有限元网格模型 外存 网格简化 基于视点的绘制 

分 类 号：TH16[机械工程—机械制造及自动化] TP391[自动化与计算机技术—计算机应用技术]