Optimization for the Outer Windshield of High-Speed Train Based on Numerical Calculation Method of Dynamic Stability About Fluid-Structure Coupling

In this paper, a flutter solving program based on unstructured mesh and mixed mesh CFD solver is developed.Using the high-precision and high-efficiency fluid-structure tight coupling method, and the 145mm outer windshield model of high-speed train is selected as the research object.We have studied and analyzed the influence of intrinsic vibration frequency on the outer windshield structure of high-speed train.The result shows that, the vibration of the outer windshield can be convergent by changing the intrinsic vibration frequency of the structure.At the same time, the relationship between the different operating velocity of high-speed train and the intrinsic frequency of structure is explored, and the optimal outer windshield scheme under the different operating velocity is proposed.