| 宋擒豹,钟秉章.岔管结构的图形有限元分析[J].计算力学学报,1993,10(1): |
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| 岔管结构的图形有限元分析 |
| The Graphical FEA of Hydraulic Power Station Distributors |
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| DOI：10.7511/jslx19931013 |
| 中文关键词: 岔管,前处理,有限元,后处理 |
| 英文关键词:distributors, preprocessing, finite element analysis, postprocessing |
| 基金项目:国家自然科学基金的资助 |
| 宋擒豹 钟秉章 |
| 航空航天工业部计算所，浙江大学 西安 710068 |
| 摘要点击次数: 1577 |
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| 中文摘要: |
| 本文介绍微机辅助水电站岔管结构分析的理论体系及相应的软件系统的结构与特点。该系统由前处理、有限元分析和后处理三部分组成。前处理利用无限变换法或直接法自动生成分级网格和有限元分析属性数据,亦可形成有限元分析的输入文件和有关后处理文件。有限元分析选用精密度高的正交曲线坐标系下的等参曲壳单元,以罚单元解决相贯线处的位移协调;利用只承受压缩变形的压簧元可计及围岩的弹性抗力作用;且具有基于局部重设计(重分析)的再起动功能。后处理以直观的图形方式表示有限元分析的结果,从而实现了有关数据的图形检查和图形分析。 |
| 英文摘要: |
| A theoretical system of computer aided structural analysis of hydraulic power station distributors is introduced. In addition, the structure and the characteristics of the corresponding software system is presented. The software system comprises three program parts: Preprocessing of FEA, FEA and Postprocessing of FEA. The preprocessing part forms automatically the graded finite element meshes of distributors on the basis of the transfinite mapping scheme or the directed method, edits the attribute datas of FEA, and prepares input data files needed in the FEA and Postprocessing. Isoparametric curved shell element in orthogonal curvilinear coordinate system which attached to high precision are employed in the FEA. The deformation conforming between different components is guaranteed by the use of the penalty element method. The elastic reaction forces of the rock around distributors can be considered by using the compress-spring element which supported only compressed deformation. The blocking solver expands the scope of problems which need to be analyzed. This program also possesses restart function based on the local redesign or local reanalysis. The postprocessing draws it into reality which would be relevant data graphical detect and graphical analyze by the use of interactive computer graphics techniques. |
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