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水电工程数值模型快速查错方法研究

Rapid Error Checking Method of Continuous Numerical Model of Hydropower Project

  • 摘要: 针对土木工程领域的地质模型构建了基于六面体连续数值模型的快速查错方法。该方法首先进行六面体有限分割,得节点及单元索引信息,再将每个单元拆分为6个空间面元结构,分为公用面元与独享面元两类,利用单元的节点坐标、网格拓扑关系进行自检索,将可能存在错误的独享面元输出至AutoCAD中进行可视化显示。案例分析表明:该方法效率高,可使模型中的错误一次性显现,然后对照错误出现位置在模型中进行一次性修改,达到省时省力的目的。研究的方法是连续数值模拟前处理的有效补充,可避免因几何联结不当引起的计算结果失真。

     

    Abstract: A rapid error checking method of geological model in civil engineering is proposed based on hexahedral finite elements. Firstly the node and element index information of each unit is split into six space surfaces, then it is divided into common surface element and special surface element, by means of the coordinates of nodes and topological relation errors is self-checking and all special surface element is written to AutoCAD by 3DFACE in order to locate the errors. The case analysis shows that the method is in high efficiency, which can make the model errors appearing at the same time, then help to modify the geometry location in numerical model. This method can cost little time and avoid the calculation distortion caused by improper connection results, and is a effective tool for pretreatment of continuous numerical simulation.

     

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