Finite Element Analysis on Acoustic Wind Tunnel Structure of Special-Shaped Thin-Walled Concrete

Abstract

The main structure of wind tunnel is special-shaped thin-walled structure. During the design and construction phase, its static strength, static stiffness and dynamic characteristics have to be taken into account. The author explains the meshing method of the main structure of wind tunnel in which finite element computing model is established through ABAQUS according to model simplification principle and analysis of stress, deformation and modality is done on this wind tunnel model. Analysis results show that the main structure of this wind tunnel caters for requirements of static strength and static stiffness in which overall stiffness distributes reasonably, modal frequency presents good distribution and condition permits to do further optimization on part of components. Straight section wall of wind tunnel affords the most pressures while dip angle section amplifies or reduces according to cross section of downwind section. Amplification section is suction-based and wall of amplification section is pressure-based. This analysis result would provide references for tension analysis of roof surface.