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.
出处
《农业机械学报》
EI
CAS
CSCD
北大核心
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)
关键词
车身覆盖件
几何模型
曲面缝合
管柱算法
Automobile panels
Geometric model
Surface healing
Pipeline method
