| 基于车身曲面离散点的三角形网格优化 |
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| 引用本文： | 成艾国,谢晖,钟志华,李光耀. 基于车身曲面离散点的三角形网格优化[J]. 数值计算与计算机应用, 2003, 24(1): 1-7 |
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| 作者姓名： | 成艾国 谢晖 钟志华 李光耀 |
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| 作者单位： | 湖南大学机械与汽车工程学院,湖南,长沙,410082 |
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| 基金项目： | 国家杰出青年基金项目(59725511)，国家自然科学基金重点项目(19832020)，国家九五重点攻关项目(95—A22—03—04)资助. |
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| 摘 要： | 1.前 言 车身设计和制造中,常常需要解决曲面逆求的问题,即给定一组车身表面的三坐标测量点,如何求解其曲面网格来表达车身曲面的原始形状.目前常用的曲面逆求方法通常都是根据离散点来生成曲面的三角形网格,然而,由于曲面测量点分布的无序性和无规则性,无论采取何种逆求的方法,生成的三角形网格大都会存在尖角,长边和短边等缺点.如果直接将这样的三角形网格运用于有限元计算,必然会影响计算结果.对于这样的三角形,本文通过给
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| 修稿时间： | 2000-12-25 |
OPTIMIZATION OF TRIANGULAR MESHES BASED ON DISCRETE POINTS ON SURFACES OF AUTOBODY |
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| Cheng Aiguo Xie Hui Zhong Zhihua Li Guangyao. OPTIMIZATION OF TRIANGULAR MESHES BASED ON DISCRETE POINTS ON SURFACES OF AUTOBODY[J]. Journal on Numerical Methods and Computer Applications, 2003, 24(1): 1-7 |
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| Authors: | Cheng Aiguo Xie Hui Zhong Zhihua Li Guangyao |
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| Abstract: | A optimum algorithm to obtain high quality triangular meshes was presented in this work by using a series of edge swapping, deletion of short edge, bisection of long edge and Laplacian smooth with given constrain conditions. The average shape factor of triangular meshes was improved much more by this algorithm. The final meshes after optimization could be used as the finite element model and autobody surface modeling. The algorithm proposed in this work could also be applied to optimization problems of the arbitrary triangular meshes as long as the correct constrain conditions were provided. |
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| Keywords: | triangular meshes surface of autobody optimization |
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