膜结构风振中流固耦合效应的数值模拟研究

英文篇名：Numerical simulation of fluid-structure interaction in wind-induced vibration of membrane structures
中文刊名：地震工程与工程振动
英文刊名：Journal of Earthquake Engineering and Engineering Vibration
作者：孙芳锦 ; 张大明 ; 殷志祥
英文作者：SUN Fangjin1 ; 2 ; ZHANG Daming3 ; YIN Zhixiang4(1.State Key Laboratory for Disaster Reduction in Civil Engineering ; Tongji University ; Shanghai 200092 ; China ; 2.Institute of Civil Engineering & Architecturure ; Liaoning Technical University ; Fuxin 123000 ; China ; 3.Technical and Economic Institute ; Liaoning Technical University ; Fuxin 123000 ; China ; 4.Graduate School ; Liaoning Technical University ; Fuxin 123000 ; China)
中文关键词：膜结构风致振动 ; 流固耦合效应 ; 数值模拟 ; 隐式弱形式 ; 强耦合整体方法
英文关键词：wind-induced vibration of membrane structures ; fluid-structure interaction ; numerical simulation ; implicit weak form ; simultaneous strong coupled method
出版日期：2010-06-15
机构：同济大学土木工程防灾国家重点实验室;辽宁工程技术大学建筑与工程学院;辽宁工程技术大学技术与经济学院;辽宁工程技术大学研究生学院;
年：2010
期：03
出版单位：地震工程与工程振动

摘要

对膜结构风致振动中的流固耦合效应进行了数值模拟研究。采用数值模拟方法中的强耦合整体方法,引入伪实体模型,通过伪实体模型方程,流体方程与结构方程的隐式弱形式来构成整个体系的强耦和整体式方程。采用该方法对双坡型膜结构在考虑和不考虑耦合效应下的风振响应等重要参数进行了计算分析,并将计算结果与已有风洞试验结果进行对比,结果符合良好。同时计算了结构周围空气的风速矢量、压力场分布,得到了空气流体场的变化规律。结果表明采用强耦合整体方法计算所得的解具有很好的收敛性,可以较准确地预测膜结构的风致动力响应。
The fluid-structure interaction in the wind-induced vibration of membrane structures is studied by using numerical simulation.The simultaneous strong coupled method is proposed by introducing the pseudo-solid model.The simultaneous strong coupled formulation of the system is achieved through the implicit weak form of fluid formulation,structural formulation and pseudo-solid formulation.The method is applied to study the key parameters such as wind-induced responses of double-slope and membrane structures,when considering and not considering the interaction effects.And the results are compared with those obtained in wind tunnel experiment.Meanwhile,the wind velocity and the pressure field distribution around membrane structures are calculated,and the changing rules of air flow are obtained.Solutions obtained by using the simultaneous strong coupled method has good convergence.The simultaneous strong coupled method can accurately predict the wind-induced dynamic responses of the membrane structures.

引文

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