| 1. | 3d automated adaptive refinement of all - hexahedral element meshes
三维全六面体网格自适应加密技术 |
| 2. | Visualization of section for three - dimensional fem analysis with hexahedral elements
基于任意六面体单元数据场的剖面可视化算法 |
| 3. | Advance of hexahedral element remeshing methods for bulk metal forming process fem simulation
金属塑性成形有限元模拟中的六面体单元再划分技术研究进展 |
| 4. | For the variables with greater gradient , a high - precision interpolating function , such as quasi - consistence hexahedral element method , is naturally necessary to be adopt
开边界给定方式宜采用速度dirichlet条件和流动压力neumann条件，以利用压力无反射条件，加快计算收敛速度。 |
| 5. | When the foundation and the intake tower are both important analytical objects , and the geological condition of foundation is very complex , the slope is meshed with tetrahedral element , while the intake tower is meshed with hexahedral element
本文针对百色水电站的地基和进水塔均是主要分析对象，而地基的地质条件十分复杂，提出了非一致网格位移协调解法。地基采用四面体单元和进水塔采用六面体单元。 |
| 6. | The verification of the algorithm is performed using a gauss - distributed concentration ball and a stock wave at steady flow in an open channel . the comparison with an analytical problem solution shows that the precision and the stability of quasi - consistence hexahedral element method is as good as that of consistence hexahedral element method , better than that of the linear interpolating function method
6 、比较分析了网格布置形式对圆管流动和台阶突扩流动计算结果的影响后表明，应在物理量梯度变化较大的区域适当加密网格，才能较好地模拟这些区域的流动特性以及壁面对整个流动的影响。 |
| 7. | The solution algorithm involves tracing the characteristic lines backwards in time from a upwind element of an interior point . two advanced mehtods , quasi - consistence and consistence hexahedral element method , for three - dimensional advective problem are developed . and comparison of these two methods with linear interpolating function method is implemented
当re 400时，流动明显地具有二维性； re 800时，流动具有一定程度的三维性，而且出现了次回流区； re 1000时，流动则具有明显的三维性。 |
| 8. | The explicit finite element method ( fem ) based on the varying time - step was selected to analyse the dynamic roll - pass process ; the nodes on the leading face of the steady - state elements set was extracted and projected onto a plane to give the required mesh , also called the origin mesh ; the implicit fem was selected to analyses the inter - pass transient thermal process ; a geometric part from the mesh was generated and meshed by using the quadrilateral elements , a heat transfer analysis was selected to transfer the node temperature data ; a new model was created by using hexahedral elements , mapping the node temperature and the equivalent plastic strain on the integration points
利用基于变步长中心差分格式的显式积分方法分析瞬态轧制过程；提取稳态单元集节点形成截面网格；利用隐式积分方法分析轧制道次间隙瞬态温度场；对型钢断面进行平面四边形网格划分并映射节点温度数据；利用六面体单元构建有限元分析模型，映射单元节点的温度、积分点的等效塑性应变，进行数值分析。 |
