车身覆盖件CAD模型曲面缝合技术  

Healing Method of CAD Geometric Model for Automobile Panels

作　　者：狄驰[1] 田原嫄[1] 郑国君[2] 郭威[2] 

机构地区：[1]东北电力大学机械工程学院,吉林132012 [2]吉林大学材料科学与工程学院,长春130025

出　　处：《农业机械学报》2010年第8期223-226,共4页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金重点资助项目(19832020);东北电力大学博士科研启动基金项目(BSJXM-200906)

摘　　要：修复车身覆盖件CAD数据是有限元分析前处理中的重要步骤,针对车身覆盖件CAD模型中曲面缝隙问题,采用NURBS技术对曲面缝合加以研究,通过管柱算法快速判定匹配边界,以基于特征的曲线合并方法完成曲面缝合,并开发出曲面缝合算法模块。通过对汽车翼子板零件的缝合验证了算法的有效性。Repairing of panel CAD geometric model is an important pre-processing step of the finite element analysis,and widely used in the computer-aided geometric design field. This paper focused on the surface healing method of panel CAD model,which was proposed and analyzed by NURBS technology. Firstly,matching-curves border was determined fast through the pipeline method,the surfaces were stitched by the matching-curves method with characteristics. On the basis of the algorithm,a surface stitching program module was developed. The validity of algorithm was verified by healing automobile front fender parts.

关 键 词：车身覆盖件 几何模型 曲面缝合 管柱算法 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术]