摘要
基于AutoCAD软件自带的VisualLISP语言,对AutoCAD进行二次开发,以三维地形等高线作基础,采用近点距离加权平均法对各高程点进行插值,生成水工建筑物数值计算需要的有限元计算网格,结合实际工程进行网格剖分。结果表明该方法能较好地反映地形起伏的情况。
The secon dary development of the AutoCAD package is worked out based on the AutoCAD owned programming language VisualLISP and considering 3D topography at the same time.The finite element mesh of ground elevation for numerical computation of the hydraulic structure is generated by the elevation interpolation from 3D topographic contours map by means of nearby point＇s distance weighted average.The application of this mesh process in engineering case shows that the landform relief is well expressed.
出处
《水电与新能源》
2010年第3期4-5,8,共3页
Hydropower and New Energy
关键词
三维地形
水工建筑物
有限元网格
近点距离加权平均法
超单元法
3D topography
hydraulic structure
finite element mesh
nearby point＇s distance weighted average
super-element process
