Tian, H.: Review of research on high-speed railway aerodynamics in China. Schetz, J.A.: Aerodynamics of high-speed trains. Unsteady Reynolds average Navier–Stokes PSD: Improved delayed detached eddy simulation URANS: This study can provide a reference for the study of aeroelastic problems of the external structure of HSTs. Then, under the coupling action of aerodynamic, elastic, and inertial forces, the vibration mode close to the high-order natural frequency of the outer windshield structure is excited, and the displacement phase of the outer windshield presents prominent periodicity. Under the action of aerodynamic loading, two opposite U-section rubber capsules produce dislocation deformation movement, which produces bending deformation, and the deformation vibration frequency is close to the first-order natural frequency of the structure. The relative deviation of the surface pressure of the outer windshield between the test and simulation is 4.3%, and the relative deviation of the main frequency of pressure change is 1.9%. The results show that the iterative computing of two-way coupling has good applicability for the analysis of the vibration of the outer windshields of a high-speed train (HST). The purpose of this study is to establish a two-way iterative FSI model based on a full-scale test, obtain the flow field characteristics around the outer windshields through FSI simulation, and analyze their vibration mechanism and characteristics. Previous studies normally treat the outer windshield structure as rigid bodies, and the coupling effect between unsteady flow and elastic structure has not been considered.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |