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由于娱乐风洞主体结构为典型的薄壁结构且受载情况复杂,所以在设计阶段必须考虑其静强度、静刚度以及动态特性问题.本文首先对主体结构作了简要介绍,然后通过单元分析,根据Hamilton原理,推导了有限元方程,并利用CAE软件MSC/Nastran对该风洞主体结构进行了仿真分析,获得了静力学以及模态分析结果.结果表明:该风洞主体结构满足静强度与静刚度要求,总体刚度分布合理,模态频率分布良好,但从经济性角度考虑应对局部结构进行进一步优化.
As the main structure of amusement wind tunnel is a typical thin-walled structure with complicated loading conditions, the static strength, static stiffness and dynamic characteristics of the amusement wind tunnel must be considered in the design phase.In this paper, the main structure is briefly introduced, and then by unit analysis, According to the principle of Hamilton, the finite element equation is deduced, and the main structure of the wind tunnel is simulated and analyzed by CAE software MSC / Nastran.The results of static analysis and modal analysis show that the main structure of the wind tunnel satisfies the static strength and Static stiffness requirements, the overall stiffness distribution is reasonable, good distribution of modal frequencies, but economic aspects should be further optimized to consider the local structure.