| 胡平,龚科家,杨光.一种基于有限元网格的车身CAD曲面数据修复方法[J].计算力学学报,2006,23(2):142~146 |
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| 一种基于有限元网格的车身CAD曲面数据修复方法 |
| A method based on finite element mesh for CAD surface data repair |
| 修订日期：2004-03-30 |
| DOI：10.7511/jslx20062026 |
| 中文关键词: 车身CAD 曲面缺陷 有限元网格 数据修复 |
| 英文关键词:auto body CAD,surface defect,finite element mesh,data repair |
| 基金项目:国家高技术研究发展计划(863计划);国家重点基础研究发展计划(973计划);吉林大学校科研和校改项目 |
| 胡平 龚科家 杨光 |
| 吉林大学汽车动态模拟国家重点实验室、车身与模具工程研究所,长春130025 |
| 摘要点击次数: 1257 |
| 全文下载次数: 19 |
| 中文摘要: |
| 针对车身CAD中非同构数据格式间的转换使自由形体的近似值发生变化而导致曲面片之间产生缝隙或网格叠加的情况，提出了一种基于有限元网格、应用于车身CAD曲面网格数据自动修复的方法。该方法还能够在一定程度上局部修复原来划分有缺陷的网格，从而降低对车身CAD模型有限元网格划分的质量要求，并通过工业复杂成形件的实际处理结果验证了该方法的有效性。 |
| 英文摘要: |
| As a result of diverse precision adopted by different data format,approximation changes with the conversion in different data format will result in apertures or overlaps among the curved surface in the process of auto body CAD modeling or mesh generation,a method based on finite element mesh for CAD surface data repair is presented in this paper.The approach also can repair some defects of the mesh on curved surface.It can expand the range of the acceptable finite element mesh and is helpful to reduce the difficulty in high quality mesh generation of auto body CAD.The validity of the method is confirmed by the results of the complex industry-forming product. |
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