摘要
许多工程领域中都存在流体-结构耦合作用现象,膜结构作为一种风敏感型结构,此现象在其风致动力响应方面表现更为明显。针对膜结构本身的特点,给出了流体-结构耦合作用下流体的基本控制方程的ALE(Arbitrary Lagrangian-Eulerian)描述、结构的基本控制方程和求解耦合方程的直接求解算法。采用Adina软件实现了简单张拉膜结构的流体-结构耦合作用风致动力响应数值模拟,并与已有风洞试验结果进行了比较。对比结果表明,给出的方法可以准确地计算出柔性结构考虑流体-结构耦合作用的风致动力响应,可为相关的科学研究和工程设计提供理论依据。
In engineering fields there are many fluid-structure interaction(FSI) problems,especially in the wind-induced dynamic response of membrane structures which are susceptible to wind.According to the characteristics of membrane structures,the governing equations of fluid in the FSI system using ALE(Arbitrary Lagrangian-Eulerian) description and the governing equations of structures are proposed, and the direct solution algorithm for coupled equation is given as well.Numerical simulation analysis of the FSI wind-induced dynamic response for tension membrane structures is performed.The comparisons of the results between the numerical simulation and the wind tunnel tests verify that the numerical method can effectively simulate the wind-induced dynamic response of the membrane,which can provide theoretic basis for the relevant scientific research and engineering design.
出处
《工业建筑》
CSCD
北大核心
2007年第z1期642-644,637,共4页
Industrial Construction
关键词
膜结构
流体-结构耦合作用
风致动力响应
风洞试验
风振系数
membrane structures fluid-structure interaction wind-induced dynamic response wind tunnel test wind-induced dynamic coefficient
