| 流固耦合系统位移-压力有限元格式在渡槽动力分析中的应用 |
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| 引用本文： | 张多新,王清云,白新理.流固耦合系统位移-压力有限元格式在渡槽动力分析中的应用[J].土木工程学报,2010(1). |
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| 作者姓名： | 张多新 王清云 白新理 |
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| 作者单位： | 华北水利水电学院;同济大学; |
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| 基金项目： | 南水北调工程建设重大关键技术研究及应用(JGZXJJ2006-10); 华北水利水电学院青年基金(HSQJ2009-005) |
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| 摘 要： | 考虑FSI的边界条件,采用变分原理建立了流固耦合(FSI)系统的位移-压力(ui,p)有限元格式,给出流固耦合系统的动力特性方程。建立了矩型和U形渡槽的动力学分析的FSI模型,以非对称特征值求解法求解了大型渡槽的动力特性,并用隐式-显式积分算法计算了强震作用下大型渡槽的动力响应,计算结果表明,基于(ui,p)格式的流固耦合系统有限元分析格式,考虑了槽体与水体的相互作用,简化了计算模型,提高了计算效率和精度,同时也得出不同过水量下两种渡槽结构动力特性和响应的变化规律等结论,可为大型渡槽及同类工程动力设计提供参考。
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| 关 键 词： | 流固耦合 压力自由度 动力分析 水工渡槽 |
Application of finite element simulation of displacement-pressure of fluid-solid interaction system for dynamic analysis of hydro-aqueducts |
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| Zhang Duoxin, Wang Qingyun Bai Xinli.Application of finite element simulation of displacement-pressure of fluid-solid interaction system for dynamic analysis of hydro-aqueducts[J].China Civil Engineering Journal,2010(1). |
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| Authors: | Zhang Duoxin Wang Qingyun Bai Xinli |
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| Affiliation: | Zhang Duoxin1,2 Wang Qingyun1 Bai Xinli1(1.North China Institute of Water Conservancy , Hydroelectric Power,Zhengzhou 450011,China2.Tongji University,Shanghai 200092,China) |
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| Abstract: | Taking into consideration of the boundary conditions in fluid-solid interactions(FSI),a displacement-pressure finite element formulation and the dynamic state equation of the FSI system are set up through the variation principle.Analyses are conducted,considering four depths of water in aqueduct,for large U-shape and rectangular aqueducts.The dynamic properties of the aqueduct were obtained by applying an asymmetric algorithm.The dynamic responses of large aqueducts under dynamic loads were calculated by ad... |
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| Keywords: | fluid solid interaction(FSI) DOF of pressure dynamic analysis hydro-aqueduct |
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