The concrete establishment progress of the truck mounted concrete pump ' s frame is presented from the exertion of loads , the establishment of restraints to the creation of meshes 从载荷的施加、约束的建立到网格单元的划分，本文详细介绍了混凝土泵车底架有限元模型的具体建立过程。
The mesh adaptation is performed by subdividing the cells using information obtained in the previous step of the solution and next rearranging the mesh to be a delaunay triangulation 网格的自适应是通过先前的计算信息来对网格单元进行细分然后再对网格进行重新整理成delaunay三角剖分。
The method automatically identifies nodes of the mesh which are candidates for deletion . the mesh refinement procedure sub - divides elements into a number of similar elements in the regions to be refined 网格中的删除点自动定位，细化是对需细化的区域的网格单元细分为几个相似的网格单元。
When severely distorted elements appear , the meshes in the window are regenerated by the advancing - front method and flow properties are interpolated from the old mesh to the new one linearly 当出现严重扭曲的网格单元时，采用阵面推进法重新生成变形区内的网格，并通过线性插值传递流动信息。
The algorithm improved to calculate the ln ( / tan # ) index is presented , in which the area of the current cell is included in the calculated total cumulative contributing area of downslide grid cell 提出一种简单的地形指数in ( a / tanp )计算方法，该方法分别计算dem网格单元的a和tanp ，对坡度为。
( 2 ) calculating the gridded rayleigh wave attenuation factor y and group velocity . the lsqr algorithm is used to inverse the attenuation factor and group velocity under 4 ? x4 ? gridding and 2 ( 2 )进行rayleigh波衰减系数、群速度网格化纯路径衰减反演计算，得到网格单元纯路径衰减系数和群速度分布结构。
As to the sting algorithm , the tune complexity of clustering is o ( n ) , but the time complexity of query is o ( g ) , where g is the number of grid cells at the lowest level and g is far smaller than n . 如sting算法，产生聚类的时间复杂度为o ( n ) ，但查询处理时间是o ( g ) ， g是最低层网格单元的数目，通常g远远小于n 。
In 3d geodynamics numerical simulation research , it is often required to mesh the whole earth or part of the spherical shell , and the size of mesh is much more important to our research 摘要在研究大尺度的三维地球动力学问题的数值模拟过程中，往往需要对整个球体或部分球壳生成计算网格，而且网格单元的尺寸对所研究的问题尤为重要。
An effective and well robust unstructured dynamic grid method is developed to solve the unsteady aerodynamic problem . on the basis of classic linear spring analogy , several modified methods for the linear spring stiffness coefficient is introduced 在现有的经典线性弹簧方法的基础上，通过对网格单元边、面和体的考虑，引入了对线性弹簧倔强系数诸如抗拉、抗扭和抗压等多种修正方法。
The flux across each cell face is calculated using a flux - vector splitting technique . higher - order scheme is obtained by expanding the cell - centered solution to each cell face using a linear reconstruction formula based on geometrical invariant features of triangles and tetrahedra , which reduces computer memory requirements 采用了基于网格单元几何特性的线性重建( reconstruction )公式并引入通量矢量分裂( flux - vectorsplitting )技术，计算得到控制体边界上二阶精度的通量值。
