A fluid-structure interaction model for windshield system of EMU
The fluid-structure interaction dynamic characteristics is often a key constraint factor for complex flexible composite structures travelling at a high speed.This paper innovatively proposes a high-efficiency analysis method for the fluid-structures interaction dynamics of such structures.The research object of this paper is a complex high-speed EMU folding shed windshield system, which consists of a folding shed inner and outer windshield and a cavity.It is difficult to accurately describe the material and connection parameters.So far, research on the fluid-structure interaction dynamics of this windshield type have not been published.The main work of this paper is to use aerodynamic simulation calculation and windshield structure modal test as input conditions, based on modal superposition method, difference integration method and gas thermodynamic equation, a fluid-structure interaction analysis model is proposed innovatively.The variable step size Ruga-Kutta method enables efficient time integration.Based on this method, the comprehensive performance of fluid-structure interaction vibration under the condition of different speeds of the 400km/h EMU windshield system running and passing through the tunnel is studied.That is, the force and displacement of the inner and outer windshield structures and the change of the cavity pressure between the windshields under different working conditions.This research can provide an effective method for analyzing the fluid-structure interaction problem of high-speed train windshields in the future.
EMU windshield system Mode Superposition Method enter into a tunnel train in open air Fluid-structure Interaction
Xiao Liu Xiang Liu
Key Laboratory of Traffic Safety on Track (Central South University), Ministry of Education, China;Joint International Research Laboratory of Key Technologies for Rail Traffic Safety, China
国际会议
Eighth Symposium on the Mechanics of Slender Structures(Moss 2019)(第八届国际细长结构力学论坛)
上海
英文
8-12
2019-05-24（万方平台首次上网日期，不代表论文的发表时间）